Scalability vs. Performance

Apr 2, 20132 likes3,526 views

Creating scalable web sites that can handle many simultaneous requests and still provide fast experience for each user is hard. Historically, the industry was not differentiating Scalability and Performance, but with emergence of front-end engineering, new field of Web Performance Optimization was born and it became critical to approach them separately. Sergey Chernyshev will compare these two directions of web engineering and describe the differences between them, he will also cover current performance trends and describe different approaches to take in order to measure and analyze Web Performance in comparison to traditional methods that are successfully used to test scalability of web systems.

Size & Speed
Scalability vs. Performance

NY Web Performance Meetup
March 27, 2013

About
• Doing web dev and
operations since 1996

• Tech Director, Web Ops
and Dev @ truTV/Turner

• Creator of ShowSlow

• Organizer at NY WebPerf

• Board member of WPO
Foundation

Available Resources

CPU Memory

Disk Network

CPU & Memory

• Classical scale problem
• Scale up (Moor's law)
• Scale out (cloud)

Storage

• More available
• Speed and reliability
• Slower then in the past / SSD

Network ???

• Easy to scale for static assets
• Trouble if you hit dynamic

How Page Loads
~8 sec above the fold

~0.5 sec for first request

only 6.25% on back end

12sec, 157 req, ~1Mb

http://bit.ly/pageload-video

http://bit.ly/pageload-filmstrip

Load Testing
apply load,
measure backend
performance degradation

"Synthetic" testing
time ALL components of page load

HAR

Real User Measurement
measure key performance metrics for REAL users

Boomerang.js

Speed, is it important?

RUM data. Aaron Kulick, Cliff Crocker @ Wallmart Labs

Speed, it is important!

RUM data. Aaron Kulick, Cliff Crocker @ Wallmart Labs

New York
Web Performance
Meetup
Sergey Chernyshev

@sergeyche
@perfplanet

The document discusses creating high performing web apps with React. It emphasizes reliability over speed, noting that reliability means the experience works under different circumstances like without JavaScript. It lists challenges to reliability like poor networks or outdated browsers. It recommends using HTML, CSS, and JavaScript responsibly, using HTML for initial content delivery and JavaScript for interactivity. Server-side rendering with Node.js is suggested to deliver meaningful initial HTML with React components for both reliability and SEO. Caching techniques like versioning assets are also recommended to improve performance.

WebAssembly vs JavaScript: What is faster?Alexandr Skachkov

- WebAssembly is a new low-level compilation target that runs at native speed by taking advantage of common hardware capabilities available on a web platform. - While WebAssembly is very fast for pure computations, calling JavaScript from WebAssembly can lead to slowdowns. Interacting with the DOM or host APIs may also be slower than native code. - WebAssembly is best suited for applications that require a lot of computation, are developed with a focus on performance, and have minimal interactions with JavaScript or the DOM. This includes porting existing C/C++ libraries and algorithms to the web.

Test Driven Development with AngularJSSirar Salih

Custom coded projectsMarko Heijnen

What Multisite can do for You - Anthony Cole - WordCamp Sydney 2012WordCamp Sydney

- WordPress Multisite allows managing multiple sites from one WordPress install, providing centralized administration and upgrades. It can be an efficient and cost-effective solution for agencies managing multiple client sites. - The presenter initially set up Multisite for his agency to more easily upgrade and manage ten client sites. He discusses hosting considerations and recommends a VPS for Australian sites. - Key aspects of his Multisite implementation include using Git for version control, Pingdom for monitoring, and custom scripts for backups to S3. He advocates keeping implementations simple to ensure stability.

Leeward WordPress Meetup- Caching and Website SpeedArlen Nagata

This document discusses how caching can improve website speed. It begins by explaining how websites load files sequentially and sets a goal of under 2 seconds. It recommends getting a fast web host as the first step, then optimizing images, code minification/concatenation, and lazy loading. There are different types of caches like browser, server, and memcache caches that store content to reduce load times. Common caching plugins like WP Super Cache and W3 Total Cache are recommended, or paying for WP Rocket for e-commerce sites. The key steps are to get a fast host, optimize the site, then cache it to improve performance.

High Performance WordPress IIBarry Abrahamson

The document discusses techniques for improving the performance of WordPress sites. It begins by providing background on WordPress.com and how it has grown significantly. It then discusses different hosting options for WordPress sites from shared hosting to virtual private servers (VPS) to dedicated servers. For each option, it provides recommendations for plugins, caching, and other optimizations that can be applied. It also covers more advanced techniques for scaling WordPress by using multiple servers, load balancing, object caching, and database replication. Overall, the document serves as a guide to optimizing WordPress performance across different hosting scenarios.

Make Local WordPress Development SimpleWP Engine

Website PerformanceHugo Fonseca

The document discusses website performance and optimization. It notes that nearly half of users expect a site to load within 2 seconds and will abandon a site taking longer than 3 seconds. Common issues causing poor performance are bloated templates, unnecessary code, and too many HTTP requests. Suggested optimizations include minimizing assets, prioritizing visible content, image optimization, caching, compression, and lazy loading. Case studies show significant speed improvements after implementing optimizations. Metrics like Speed Index measure how quickly visible content displays to influence perceived performance.

High Performance WordPress - WordCamp Jerusalem 2010Barry Abrahamson

This document discusses high performance for WordPress. It provides information about Barry Abrahamson from Automattic and details about WordPress.com, which has over 13.5 million sites and 16 million users. It then discusses what performance means in terms of speed and scaling to serve many concurrent requests. Both client-side and server-side performance are examined, outlining techniques and tools to improve each. Real-world examples from WordPress.com show benefits from approaches like APC caching and HipHop. The document concludes with tips on improving performance as a user, sysadmin, developer, and scaling WordPress sites.

ClojureScript: I can't believe this is JavaScriptEric Normand

ServerBeach and WordPress BlogWorldExpo 2007Barry Abrahamson

WordPress was experiencing rapid growth and could not afford any downtime for its users. They needed a scalable and cost-effective solution to support large amounts of traffic. ServerBeach was able to help by providing scalability through automation that allowed WordPress to quickly build servers and seamlessly add capacity. ServerBeach also offered high availability through redundant systems, flexibility to handle large traffic loads, and an affordable price point that helped WordPress continue growing to now support over 1.75 million blogs with 99.99% uptime.

High Performance WordPressBarry Abrahamson

This document discusses techniques for improving the performance of WordPress sites, including: 1) Using alternative PHP caches like APC which can increase performance by 50% and handling 12 requests/second compared to 8 without caching. 2) Using WP-Cache which can increase performance 25x and handle 300 requests/second. 3) Considering alternatives to Apache like Litespeed, lighttpd, or using Apache with fast CGI for high concurrency mostly static sites. 4) Load balancing databases across multiple servers to handle more requests.

Back to the future with static site generatorsChris Ward

If you remember when web sites were all created with plain HTML pages, then you'll know that CMSs and dynamic web frameworks saved us and solved all our problems. Or did they? In fact, we instead spend a lot of time customising existing code to meet our requirements, grappling with deployments and then whacking caching on top of over-powered servers to get an ounce of speed. Static Site Generators aim to sit somewhere in the middle and are perfect for semi-dynamic sites and with a little learning, better for content creators. In this session, Chris will look at an overview of the principles and options for static site generators and deep dive into one or two to explain further how the work and can fit into your projects.

Making maven and grunt play niceZoran Nikolovski

Page experience road - WordCamp Athens 2022Fellyph Cintra

Page experience is the set of signals that are part of the ranking factors on the Google search, 2021 those metrics got the attention of millions of WordPress websites. But why those metrics are so important and how does it help to understand how is the experience of users interacting on a web page. Core Web Vitals, mobile-friendly, no intrusive experience why those terms matter, and how you can archive those items. In this talk, we’re going to ride on the road of page experience and give our users the best experience improving the Core Web Vitals metrics in our website and get tips on how to improve items such as Largest Contentful Paint (LCP), First Input Delay (FID) and Cumulative Layout Shift (CLS) in our WordPress website.

Cloud fail scaling to infinity but not beyondKunal Johar

Kunal took on a project to scale a senior design project to tens of thousands of users per week to support a major opportunity. Despite using cloud platforms like Amazon EC2 and load testing, the system failed under high traffic on a key day, nearly causing the company to fail. Kunal realized the load test did not properly simulate real usage and that the application's commit code was a bottleneck. This taught him that PaaS platforms lack visibility and control when complex applications face unexpected demand spikes.

Realtime Webpack - Pushing on-demand bundling to the limits by Oliver Woodings React London 2017

HH.JS - State of the AutomationAdam Christian

This document summarizes the state of test automation and the evolution of tools over time. It discusses early tools like Selenium and Windmill from 2006-2007 and how newer tools like Node.js, PhantomJS, and WebDriver helped drive further advancement. The document provides an overview of current testing stacks and best practices, and looks towards the future of test automation including improved mobile and native app support.

User percieved performanceMike North

Freelancing and side-projects on RailsJohn McCaffrey

Optimizing Your Site for Holiday TrafficWP Engine UK

This document summarizes a webinar about optimizing websites for holiday traffic. It discusses why website speed matters, and provides tips for keeping sites scalable during peak traffic periods. These tips include improving server requests through minification, concatenation, caching, image compression, and using a content delivery network (CDN). It also recommends balancing workload across dedicated services and keeping sites updated. The webinar then focuses on how CDNs like MaxCDN can increase speed by distributing servers globally. Attendees are encouraged to test site speed using tools like PageSpeed Insights and WebPagetest.

Railsconf 2014 - Deploying Rails is Easier Thank It Lookstalkingquickly

AEM/CQ Montreal User Group Meeting - March 25, 2015 - Takeaways from Adobe Su...INM_

20130714 php matsuri - highly available phpGraham Weldon

Graham Weldon discusses building highly available and scalable PHP systems. He outlines different system architectures from simple single server setups to load balanced solutions with failover. Key aspects in scaling PHP applications include using Nginx as a web server, PHP-FPM for processing, a clustered database, and caching with Varnish. Session handling requires a common storage like Redis. Weldon also promotes Rakuten's hiring needs for engineers interested in scalable architecture and DevOps.

The Often Useful Somewhat Annoying World of WordPress MultisiteJames Bundey

Realtime webMohamed Galal

لو اعاوز تفهم ازي تعمل Real-time web app زي البرامج اللي فيها Chats او Notifications وكمان عايز تعرف انواع ال Transport المختلفة وتفهم الفرق بينهم يبقى اتفرج على الفيديو البسيط ده وفي اخر الفيديو في مثال بسيط باستخدام ال SignalR https://youtu.be/Bsicy2KIrU8

In-house web automation?Adam Christian

This document discusses various tools and approaches for automating web application testing. It covers infrastructure options like using boxes, VMs, and cloud services. It also discusses frameworks for test automation including Windmill, Selenium, WatiR, and others. The document provides examples of continuous integration tools like Hudson and ways to approach test coverage, maintenance of the automation environment, and expanding the infrastructure over time. It emphasizes that test automation can help development and QA teams while increasing reliability.

Comprehensive Performance Testing: From Early Dev to Live ProductionTechWell

Although the idea of doing performance testing throughout the software lifecycle sounds simple enough, as soon as you try to combine the concepts of “always testing” (in dev, pre-prod, and production) with “limited time and resources” and throw in the word “comprehensive,” the challenges can be monumental. Quickly the “how” of it emerges as the most important question—and one worth focusing on. Brad Stoner tackles this topic by explaining how he has been able to solve this seemingly impossible puzzle by applying various approaches such as early and often, learning when to say no, and seriously, I did say no—and more. Brad shares concrete examples of how he has successfully implemented full lifecycle performance testing at several companies. Join Brad to learn what performance tests to run at each development and delivery stage—from a simple load profile on a single server to full-scale soak tests over several days.

Performance Testing w/ WebPage Test Private Instance (DrupalCamp Ohio)Bill Condo

Today the average website loads more than 1.5MB of assets including images, scripts and other external data. This causes frustrating delays for site visitors and often leads to abandoned visits. As mobile data is expensive in many developing countries, cost for each page view is also significant consideration. A number of tools exist to help optimize sites and we’ll introduce and setup a private instance of the popular WebPagetest tool. WPT covers load time, web server compression and caching settings, and timeline based screen shots through the duration of the page load.

More Related Content

What's hot (20)

Website PerformanceHugo Fonseca

High Performance WordPress - WordCamp Jerusalem 2010Barry Abrahamson

ClojureScript: I can't believe this is JavaScriptEric Normand

ServerBeach and WordPress BlogWorldExpo 2007Barry Abrahamson

High Performance WordPressBarry Abrahamson

Back to the future with static site generatorsChris Ward

Making maven and grunt play niceZoran Nikolovski

Page experience road - WordCamp Athens 2022Fellyph Cintra

Cloud fail scaling to infinity but not beyondKunal Johar

Realtime Webpack - Pushing on-demand bundling to the limits by Oliver Woodings React London 2017

HH.JS - State of the AutomationAdam Christian

User percieved performanceMike North

Freelancing and side-projects on RailsJohn McCaffrey

Optimizing Your Site for Holiday TrafficWP Engine UK

Railsconf 2014 - Deploying Rails is Easier Thank It Lookstalkingquickly

AEM/CQ Montreal User Group Meeting - March 25, 2015 - Takeaways from Adobe Su...INM_

20130714 php matsuri - highly available phpGraham Weldon

The Often Useful Somewhat Annoying World of WordPress MultisiteJames Bundey

Realtime webMohamed Galal

In-house web automation?Adam Christian

Website PerformanceHugo Fonseca

High Performance WordPress - WordCamp Jerusalem 2010Barry Abrahamson

ClojureScript: I can't believe this is JavaScriptEric Normand

ServerBeach and WordPress BlogWorldExpo 2007Barry Abrahamson

High Performance WordPressBarry Abrahamson

Back to the future with static site generatorsChris Ward

Making maven and grunt play niceZoran Nikolovski

Page experience road - WordCamp Athens 2022Fellyph Cintra

Cloud fail scaling to infinity but not beyondKunal Johar

Realtime Webpack - Pushing on-demand bundling to the limits by Oliver Woodings React London 2017

HH.JS - State of the AutomationAdam Christian

User percieved performanceMike North

Freelancing and side-projects on RailsJohn McCaffrey

Optimizing Your Site for Holiday TrafficWP Engine UK

Railsconf 2014 - Deploying Rails is Easier Thank It Lookstalkingquickly

AEM/CQ Montreal User Group Meeting - March 25, 2015 - Takeaways from Adobe Su...INM_

20130714 php matsuri - highly available phpGraham Weldon

The Often Useful Somewhat Annoying World of WordPress MultisiteJames Bundey

Realtime webMohamed Galal

In-house web automation?Adam Christian

Similar to Scalability vs. Performance (20)

Comprehensive Performance Testing: From Early Dev to Live ProductionTechWell

Performance Testing w/ WebPage Test Private Instance (DrupalCamp Ohio)Bill Condo

Azug - successfully breeding rabitsYves Goeleven

This document discusses successfully breeding rabbits in the cloud. It describes rabbits as small public apps that want to live outside and scale quickly. It discusses how the cloud provides rabbits with global reach, fast time to market, performance, scalability, availability and cost efficiency. The document emphasizes that the weakest link limits overall scalability and that caches, queues and separating concerns can help address this. It stresses understanding cloud capacity and efficiently using resources to keep costs low. Finally, it discusses how rabbits can achieve self-service, marketing, support, education and testing at scale.

Performance stackShayne Bartlett

1) The document discusses different technology stacks and hosting options for websites, including LAMP (Linux, Apache, MySQL, PHP), LEMP (Linux, Nginx, Percona, PHP-FPM, Exim), dedicated servers, and cloud servers. 2) It provides an overview of components in the LEMP stack such as Nginx, Percona, and PHP-FPM, noting their advantages over traditional components like Apache and MySQL, including increased performance. 3) The document emphasizes the importance of choosing the right hosting solution based on the needs and merits of the specific website, considering factors like cost, reliability, performance, flexibility, and administration.

Web Performance Optimization (WPO)Betclic Everest Group Tech Team

This document discusses web performance optimization and provides tips to improve performance. It emphasizes that performance is important for user experience, search engine optimization, conversion rates, and costs. It outlines common causes of performance issues like round-trip times, payload sizes, browser rendering delays, and inefficient JavaScript. Specific recommendations are given to optimize images, stylesheets, scripts, and browser rendering through techniques like compression, caching, deferred loading, and efficient coding practices. A variety of tools for measuring and improving performance are also listed.

Web Performance - Learnings from Velocity ConferenceHardik Shah

- Synthetic and real user monitoring are important techniques for testing website performance from different environments and connection speeds. Factors like round trip time need to be considered in addition to bandwidth. - Optimizing the critical rendering path by prioritizing critical resources, inlining CSS, and lazy loading other assets can help meet users' expectations of feeling an instant response within 100-300ms. - Techniques like prefetching, prerendering, and static memory can help reduce latency further by anticipating needs and avoiding costly garbage collection. Continued work on standards and browser APIs aims to provide more tools for optimizing performance.

Imagine 2014: The Devil is in the Details How to Optimize Magento Hosting to ...George White

The document discusses optimizing Magento hosting to increase online sales. It describes a case study of a travel website that experienced a catastrophic event due to a locked database from high query volumes. The root cause was identified and a solution was implemented using a "McManus Magic Shield" to block cache rebuilds if one was already in progress. Load testing results showed that code quality and site configuration are major factors in Magento performance. Best practices for development like reducing requests and using caching can significantly improve scalability. Faster page loading directly correlates to increased conversion rates.

Cvcc performance tuningJohn McCaffrey

Performance testingHassan Mohammed

This document provides an overview of performance testing. It discusses why performance testing is important, the performance testing process, and how to analyze results. The key aspects of performance testing covered include choosing tools, designing test environments, setting targets, scripting transactions, executing different test types, monitoring servers and networks, and performing root cause analysis on test results. Effective performance testing requires thorough planning, proper test setup and execution, and in-depth analysis of performance data.

Windy cityrails performance_tuningJohn McCaffrey

Ruby on Rails Performance Tuning. Make it faster, make it better (WindyCityRa...John McCaffrey

Load testing with Visual Studio and Azure - Andrew SiemerAndrew Siemer

In this presentation we will look at what web performance testing is and the various types of testing that can be performed. We will then dig into Visual Studio 2013 Ultimate to see that the Visual Studio platform is now a real contender in performance testing automation. And we will see how the Visual Studio integration with Visual Studio Online and Azure can take your web performance tests and spin up impressive load tests in a truly useful way.

Web performance: beyond load testingSergeyChernyshev

Web Performance is a new trend in web application performance analysis and measurement which specializes in overall user experience instead of traditional approach that primarily looks at server performance. Sergey Chernyshev will describe the differences between the two approaches, show why it is important to distinguish between performance and scalability and talk about new tools that go beyond load testing.

performance.pptfakeaccount225095

This document provides practical strategies for improving front-end performance of websites. It discusses specific techniques like making fewer HTTP requests by combining files, leveraging browser caching with far-future expires headers, gzipping components, using CSS sprites, and deploying assets on a content delivery network. It also summarizes key rules from tools like YSlow and PageSpeed for optimizing front-end performance.

Make Drupal Run Fast - increase page load speedPromet Source

What does it mean when someone says “My Site is slow now”? What is page speed? How do you measure it? How can you make it faster? We’ll try to answer these questions, provide you with a set of tools to use and explain how this relates to your server load. We will cover: - What is page load speed? – Tools used to measure performance of your pages and site – Six Key Improvements to make Drupal “run fast” ++ Performance Module settings and how they work ++ Caching – biggest gainer and how to implement Boost ++ Other quick hits: off loading search, tweaking settings & why running crons is important ++ Ask your host about APC and how to make sure its set up correctly ++ Dare we look at the database? Easy changes that will help a lot! - Monitoring Best practices – what to set up to make sure you know what is going on with your server – What if you get slashdoted? Recommendation on how to quickly take cover from a rhino.

The Web We Weave :: How Web Developers Think About PerformanceOliver Tse

The document discusses how web developers think about performance optimization. It explains that client render time, not page load time, is a more important metric. Page load does not indicate when the full page is visible, as rendering continues after load. The document recommends using tools like Webpagetest and Chrome Timeline to identify opportunities like unused JavaScript that could significantly improve render speed and user experience. Overall performance optimization requires understanding how the browser loads assets and renders pages to target changes that make the largest impact.

Front End page speed performance improvements for DrupalAndy Kucharski

If you are a developer or business manager with responsibilities over your website, then check out this deck.. What will you learn? The webinar, created by our Founder and CEO, Andy Kucharski, is a highly accessible, information-rich review on the ways Drupal site performance can be radically improved. Some of the main topics we will cover include: What is slow site speed? What tools to use to diagnose it. Plus six key improvements to make Drupal “run fast!” And if that’s not already enough, we will also share some best practices monitoring tips for making sure you know how the Drupal server is performing 24/7.

From Zero to Performance Hero in Minutes - Agile Testing Days 2014 PotsdamAndreas Grabner

As a Tester you need to level up. You can do more than functional verification or reporting Response Time In my Performance Clinic Workshops I show you real life exampls on why Applications fail and what you can do to find these problems when you are testing these applications. I am using Free Tools for all of these excercises - especially Dynatrace which gives full End-to-End Visibility (Browser to Database). You can test and download Dynatrace for Free @ http://bit.ly/atd2014challenge

OTM Performance Review and BenchmarkingMavenWire

More and more clients are looking to understand the capabilities of the OTM/G-Log architecture and configuration in order better tune OTM. Usually, this is required because of poor OTM performance or as preparation for significant changes to OTM configuration, volume, or platform. The client may be experience poor performance throughout the entire system or for a very specific use cases. The primary objective of a Performance Tuning Exercise is to understand how OTM is being utilized and to recommend solution to improve the performance of OTM. We recommend and will take the audience through a “ground-up” performance tuning exercise, starting with hardware and infrastructure, moving to Java and App server tuning, then to OTM technical tuning and finally to the OTM functional tuning (data, agents, etc). These audits may identify hardware constraints at each tier, networking, or other infrastructure constraints causing sub-optimal system performance. Simply stated, the performance audit will identify all bottlenecks in the system if they exist. In many cases the largest performance is impacts are not hardware, but rather how the data is configured within the application. So as part of the exercise we will analyze database performance, individual SQL queries, OTM Queues, bulk planning parameters, agents, rates and the settlement process. Understanding the methods which will best identify these bottlenecks will help you avoid performance issues early in your project and save considerable time and expense as you near go-live. This presentation will guide you through the steps necessary to better understand what is impacting performance and how to best handle it. It will provide lessons learned and tools that are available to you better manage and maintain a healthy OTM environment. Presented by Chris Plough at MavenWire

Performance? That's what version 2 is for!Eduard Tudenhoefner

This document discusses the importance of performance and strategies for improving performance. It notes that performance issues can occur anywhere in an application's architecture from the client, application server, databases, legacy systems and more. It recommends identifying performance risks early, defining objectives, conducting architectural reviews, and monitoring applications. Specific techniques are provided for improving memory usage, data retrieval from databases, and reducing remote calls. The conclusion emphasizes that investing in performance testing and engineering can significantly reduce costs compared to dealing with performance problems later.

Comprehensive Performance Testing: From Early Dev to Live ProductionTechWell

Performance Testing w/ WebPage Test Private Instance (DrupalCamp Ohio)Bill Condo

Azug - successfully breeding rabitsYves Goeleven

Performance stackShayne Bartlett

Web Performance Optimization (WPO)Betclic Everest Group Tech Team

Web Performance - Learnings from Velocity ConferenceHardik Shah

Imagine 2014: The Devil is in the Details How to Optimize Magento Hosting to ...George White

Cvcc performance tuningJohn McCaffrey

Performance testingHassan Mohammed

Windy cityrails performance_tuningJohn McCaffrey

Ruby on Rails Performance Tuning. Make it faster, make it better (WindyCityRa...John McCaffrey

Load testing with Visual Studio and Azure - Andrew SiemerAndrew Siemer

Web performance: beyond load testingSergeyChernyshev

performance.pptfakeaccount225095

Make Drupal Run Fast - increase page load speedPromet Source

The Web We Weave :: How Web Developers Think About PerformanceOliver Tse

Front End page speed performance improvements for DrupalAndy Kucharski

From Zero to Performance Hero in Minutes - Agile Testing Days 2014 PotsdamAndreas Grabner

OTM Performance Review and BenchmarkingMavenWire

Performance? That's what version 2 is for!Eduard Tudenhoefner

More from SergeyChernyshev (20)

Optimizing Core Web Vitals using Speculation Rules APISergeyChernyshev

In this session Sergey Chernyshev talks about a technology available in Google Chrome called Speculation Rules API. We look at why it is so groundbreaking, how it can be used by web developers to greatly optimize their site’s load and rendering times and what are the aspects they need to consider when implementing it. Finally, we discuss how it improves the User Experience Speed and corresponding Core Web Vitals and how much websites can benefit from using this technology.

Understanding speed of your site using Core Web VitalsSergeyChernyshev

Speed Design by Sergey Chernyshev at NY Web Performance Meetup, June 5, 2024SergeyChernyshev

Flexible Architectures for Web Performance PresentationSergeyChernyshev

Today in the web performance space we have a lot of technologies that were invented to speed up various parts of the applications. Many of them are successful when they can be just put in place without changing anything in the applications or at least with minimal changes, like network protocols or image formats. However some more advanced features like progressive web apps, edge cache for HTML responses, edge workers and few other features like that are hard to implement in the regular web applications incrementally. To successfully implement them today, applications have to be built with these technologies in mind from the beginning. This rigidity is something that blocks a lot of innovation from reaching the real world applications that desperately need to get faster. In this talk, Sergey Chernyshev discusses several of these technologies, highlight the importance of Flexible Architectures and proposes a radical idea of Borderless Computation as a possible solution for the problem.

Capturing speed of user experience using user timing apiSergeyChernyshev

Sergey Chernyshev will talk about the challenges of capturing accurate metrics around speed of user experience and how instrumenting your application using UserTiming API can help. He will give a brief overview of automated metrics that are captured by the browser and show how custom metrics, specific to features of your user interface can help your teams better relate to these numbers and help more directly align them with user interface optimizations. Sergey will show how to use native UserTiming API to mark specific events and measure differences between these marks on Performance Timeline. He will also introduce UX-Capture JavaScript library to help simplify and unify this instrumentation across your site. We will also look at debugging process using Chrome Developer Tools and how metrics captured with UserTiming API can be automatically picked up by open WebPageTest tool and other synthetic and RUM monitoring tools.

Managing application performance by Kwame ThomisonSergeyChernyshev

This document provides tips for managing application performance, including: - Choosing the right metrics like time to interact and percentiles to understand performance. - Reasoning about telemetry data by examining time series, histograms, and cumulative distribution functions to identify issues. - Prioritizing the development of performance tools like profilers and predictive models. It also stresses the importance of building alignment through a common performance language, demonstrating impact, and cultivating a performance culture. Finally, it discusses defining a clear performance architecture strategy and team mission to guide work and set a north star.

Fastest request is never madeSergeyChernyshev

Designing speed with progressive enhancementSergeyChernyshev

Web performance tools @ WebPerf.camp 2016SergeyChernyshev

The document outlines best practices and tools for web performance optimization. It discusses analyzing performance using synthetic and real user monitoring tools, following optimization rules and best practices from sources like Google PageSpeed Insights, and improving performance through techniques such as image optimization, lazy loading, and delivery methods like CDNs and server-side optimizations. The document also provides contact information for Sergey Chernyshev, the presenter on web performance tools and techniques.

Extending your applications to the edge with CDNsSergeyChernyshev

The document discusses how content delivery networks (CDNs) have evolved to better handle dynamic and unpredictable content. Traditionally, CDNs focused on static content and treated dynamic content as uncacheable. However, some dynamic content can actually be cached for periods of time. Modern CDNs now provide more granular caching controls and real-time APIs to allow custom caching configurations specified by the application. This improves cache hit ratios, offloads origin servers, and enhances performance even for long-tail content that changes infrequently.

Speed is feature #1SergeyChernyshev

Speed of interactive UI is a critical aspect of web experience, especially now when mobile consumption and responsive design became an integral part of web strategy. Sergey Chernyshev talks about the most important feature of every web site and application and describes why you need to care about speed, what are the common performance issues and how to establish a process for web performance optimization in your team.

Tools of the trade 2014SergeyChernyshev

What we can learn from CDNs about Web Development, Deployment, and PerformanceSergeyChernyshev

CDNs have become a core part of internet infrastructure, and application owners are building them into development and product roadmaps for improved efficiency, transparency and performance. In his talk, Hooman shares recent learnings about the world of CDNs, how they're changing, and how Devs, Ops, and DevOps can integrate with them for optimal deployment and performance. Hooman Beheshti is VP of Technology at Fastly, where he develops web performance services for the world's smartest CDN platform. A pioneer in the application acceleration space, Hooman helped design one of the original load balancers while at Radware and has held senior technology positions with Strangeloop Networks and Crescendo Networks. He has worked on the core technologies that make the Internet work faster for nearly 20 years and is an expert and frequent speaker on the subjects of load balancing, application performance, and content delivery networks.

Introduction to web performance @ IEEESergeyChernyshev

Web performance refers to how fast a website works for each user, not how many users it can serve. Slow websites can negatively impact user experience and conversion rates, costing companies money. Most web performance issues come from the front-end rather than the back-end. Areas to focus on for improvement include JavaScript deferral, utilizing browser caching, reducing payload size and number of requests, progressive enhancement, and back-end optimizations like caching, server configuration, and query optimization.

Introduction to Web PerformanceSergeyChernyshev

Performance anti patterns in ajax applicationsSergeyChernyshev

The document discusses performance anti-patterns in Ajax applications. It covers the anatomy of web 2.0 applications, the impact of slow performance on users, common mistakes that degrade performance such as too many network requests and latency issues, and how to analyze page speed using free tools. The presentation aims to teach attendees how to avoid common framework pitfalls and optimize Ajax application performance.

Taming 3rd party contentSergeyChernyshev

Velocity 2010 reviewSergeyChernyshev

Keeping track of your performance using Show SlowSergeyChernyshev

Sergey Chernyshev presented Show Slow, a tool he developed for keeping track of website performance. Show Slow allows automated monitoring and collection of performance metrics over time to identify issues. It works by running tests on websites using tools like YSlow and PageSpeed and sending the collected data to a Show Slow instance for analysis, ranking, and debugging. Sergey demonstrated Show Slow and invited attendees to provide feedback, get involved in the open source project, or contact him directly for more information.

Keeping track of your performance using show slowSergeyChernyshev

Optimizing Core Web Vitals using Speculation Rules APISergeyChernyshev

Understanding speed of your site using Core Web VitalsSergeyChernyshev

Speed Design by Sergey Chernyshev at NY Web Performance Meetup, June 5, 2024SergeyChernyshev

Flexible Architectures for Web Performance PresentationSergeyChernyshev

Capturing speed of user experience using user timing apiSergeyChernyshev

Managing application performance by Kwame ThomisonSergeyChernyshev

Fastest request is never madeSergeyChernyshev

Designing speed with progressive enhancementSergeyChernyshev

Web performance tools @ WebPerf.camp 2016SergeyChernyshev

Extending your applications to the edge with CDNsSergeyChernyshev

Speed is feature #1SergeyChernyshev

Tools of the trade 2014SergeyChernyshev

What we can learn from CDNs about Web Development, Deployment, and PerformanceSergeyChernyshev

Introduction to web performance @ IEEESergeyChernyshev

Introduction to Web PerformanceSergeyChernyshev

Performance anti patterns in ajax applicationsSergeyChernyshev

Taming 3rd party contentSergeyChernyshev

Velocity 2010 reviewSergeyChernyshev

Keeping track of your performance using Show SlowSergeyChernyshev

Keeping track of your performance using show slowSergeyChernyshev

Recently uploaded (20)

Heap, Types of Heap, Insertion and DeletionJaydeep Kale

Generative Artificial Intelligence (GenAI) in BusinessDr. Tathagat Varma

Designing Low-Latency Systems with Rust and ScyllaDB: An Architectural Deep DiveScyllaDB

Want to learn practical tips for designing systems that can scale efficiently without compromising speed? Join us for a workshop where we’ll address these challenges head-on and explore how to architect low-latency systems using Rust. During this free interactive workshop oriented for developers, engineers, and architects, we’ll cover how Rust’s unique language features and the Tokio async runtime enable high-performance application development. As you explore key principles of designing low-latency systems with Rust, you will learn how to: - Create and compile a real-world app with Rust - Connect the application to ScyllaDB (NoSQL data store) - Negotiate tradeoffs related to data modeling and querying - Manage and monitor the database for consistently low latencies

UiPath Community Berlin: Orchestrator API, Swagger, and Test Manager APIUiPathCommunity

Join this UiPath Community Berlin meetup to explore the Orchestrator API, Swagger interface, and the Test Manager API. Learn how to leverage these tools to streamline automation, enhance testing, and integrate more efficiently with UiPath. Perfect for developers, testers, and automation enthusiasts! 📕 Agenda Welcome & Introductions Orchestrator API Overview Exploring the Swagger Interface Test Manager API Highlights Streamlining Automation & Testing with APIs (Demo) Q&A and Open Discussion Perfect for developers, testers, and automation enthusiasts! 👉 Join our UiPath Community Berlin chapter: https://community.uipath.com/berlin/ This session streamed live on April 29, 2025, 18:00 CET. Check out all our upcoming UiPath Community sessions at https://community.uipath.com/events/.

Big Data Analytics Quick Research Guide by Arthur MorganArthur Morgan

This is a Quick Research Guide (QRG). QRGs include the following: - A brief, high-level overview of the QRG topic. - A milestone timeline for the QRG topic. - Links to various free online resource materials to provide a deeper dive into the QRG topic. - Conclusion and a recommendation for at least two books available in the SJPL system on the QRG topic. QRGs planned for the series: - Artificial Intelligence QRG - Quantum Computing QRG - Big Data Analytics QRG - Spacecraft Guidance, Navigation & Control QRG (coming 2026) - UK Home Computing & The Birth of ARM QRG (coming 2027) Any questions or comments? - Please contact Arthur Morgan at [email protected]. 100% human made.

Transcript: #StandardsGoals for 2025: Standards & certification roundup - Tec...BookNet Canada

Book industry standards are evolving rapidly. In the first part of this session, we’ll share an overview of key developments from 2024 and the early months of 2025. Then, BookNet’s resident standards expert, Tom Richardson, and CEO, Lauren Stewart, have a forward-looking conversation about what’s next. Link to recording, presentation slides, and accompanying resource: https://bnctechforum.ca/sessions/standardsgoals-for-2025-standards-certification-roundup/ Presented by BookNet Canada on May 6, 2025 with support from the Department of Canadian Heritage.

ThousandEyes Partner Innovation Updates for May 2025ThousandEyes

HCL Nomad Web – Best Practices und Verwaltung von Multiuser-Umgebungenpanagenda

Webinar Recording: https://www.panagenda.com/webinars/hcl-nomad-web-best-practices-und-verwaltung-von-multiuser-umgebungen/ HCL Nomad Web wird als die nächste Generation des HCL Notes-Clients gefeiert und bietet zahlreiche Vorteile, wie die Beseitigung des Bedarfs an Paketierung, Verteilung und Installation. Nomad Web-Client-Updates werden “automatisch” im Hintergrund installiert, was den administrativen Aufwand im Vergleich zu traditionellen HCL Notes-Clients erheblich reduziert. Allerdings stellt die Fehlerbehebung in Nomad Web im Vergleich zum Notes-Client einzigartige Herausforderungen dar. Begleiten Sie Christoph und Marc, während sie demonstrieren, wie der Fehlerbehebungsprozess in HCL Nomad Web vereinfacht werden kann, um eine reibungslose und effiziente Benutzererfahrung zu gewährleisten. In diesem Webinar werden wir effektive Strategien zur Diagnose und Lösung häufiger Probleme in HCL Nomad Web untersuchen, einschließlich - Zugriff auf die Konsole - Auffinden und Interpretieren von Protokolldateien - Zugriff auf den Datenordner im Cache des Browsers (unter Verwendung von OPFS) - Verständnis der Unterschiede zwischen Einzel- und Mehrbenutzerszenarien - Nutzung der Client Clocking-Funktion

Cybersecurity Identity and Access Solutions using Azure ADVICTOR MAESTRE RAMIREZ

Quantum Computing Quick Research Guide by Arthur MorganArthur Morgan

2025-05-Q4-2024-Investor-Presentation.pptxSamuele Fogagnolo

Rusty Waters: Elevating Lakehouses Beyond Sparkcarlyakerly1

Spark is a powerhouse for large datasets, but when it comes to smaller data workloads, its overhead can sometimes slow things down. What if you could achieve high performance and efficiency without the need for Spark? At S&P Global Commodity Insights, having a complete view of global energy and commodities markets enables customers to make data-driven decisions with confidence and create long-term, sustainable value. 🌍 Explore delta-rs + CDC and how these open-source innovations power lightweight, high-performance data applications beyond Spark! 🚀

#StandardsGoals for 2025: Standards & certification roundup - Tech Forum 2025BookNet Canada

Book industry standards are evolving rapidly. In the first part of this session, we’ll share an overview of key developments from 2024 and the early months of 2025. Then, BookNet’s resident standards expert, Tom Richardson, and CEO, Lauren Stewart, have a forward-looking conversation about what’s next. Link to recording, transcript, and accompanying resource: https://bnctechforum.ca/sessions/standardsgoals-for-2025-standards-certification-roundup/ Presented by BookNet Canada on May 6, 2025 with support from the Department of Canadian Heritage.

Role of Data Annotation Services in AI-Powered ManufacturingAndrew Leo

Technology Trends in 2025: AI and Big Data AnalyticsInData Labs

At InData Labs, we have been keeping an ear to the ground, looking out for AI-enabled digital transformation trends coming our way in 2025. Our report will provide a look into the technology landscape of the future, including: -Artificial Intelligence Market Overview -Strategies for AI Adoption in 2025 -Anticipated drivers of AI adoption and transformative technologies -Benefits of AI and Big data for your business -Tips on how to prepare your business for innovation -AI and data privacy: Strategies for securing data privacy in AI models, etc. Download your free copy nowand implement the key findings to improve your business.

Electronic_Mail_Attacks-1-35.pdf by xploitniftliyevhuseyn

How Can I use the AI Hype in my Business Context?Daniel Lehner

𝙄𝙨 𝘼𝙄 𝙟𝙪𝙨𝙩 𝙝𝙮𝙥𝙚? 𝙊𝙧 𝙞𝙨 𝙞𝙩 𝙩𝙝𝙚 𝙜𝙖𝙢𝙚 𝙘𝙝𝙖𝙣𝙜𝙚𝙧 𝙮𝙤𝙪𝙧 𝙗𝙪𝙨𝙞𝙣𝙚𝙨𝙨 𝙣𝙚𝙚𝙙𝙨? Everyone’s talking about AI but is anyone really using it to create real value? Most companies want to leverage AI. Few know 𝗵𝗼𝘄. ✅ What exactly should you ask to find real AI opportunities? ✅ Which AI techniques actually fit your business? ✅ Is your data even ready for AI? If you’re not sure, you’re not alone. This is a condensed version of the slides I presented at a Linkedin webinar for Tecnovy on 28.04.2025.

Enhancing ICU Intelligence: How Our Functional Testing Enabled a Healthcare I...Impelsys Inc.

Complete Guide to Advanced Logistics Management Software in Riyadh.pdfSoftware Company

Explore the benefits and features of advanced logistics management software for businesses in Riyadh. This guide delves into the latest technologies, from real-time tracking and route optimization to warehouse management and inventory control, helping businesses streamline their logistics operations and reduce costs. Learn how implementing the right software solution can enhance efficiency, improve customer satisfaction, and provide a competitive edge in the growing logistics sector of Riyadh.

AI Changes Everything – Talk at Cardiff Metropolitan University, 29th April 2...Alan Dix

Talk at the final event of Data Fusion Dynamics: A Collaborative UK-Saudi Initiative in Cybersecurity and Artificial Intelligence funded by the British Council UK-Saudi Challenge Fund 2024, Cardiff Metropolitan University, 29th April 2025 https://alandix.com/academic/talks/CMet2025-AI-Changes-Everything/ Is AI just another technology, or does it fundamentally change the way we live and think? Every technology has a direct impact with micro-ethical consequences, some good, some bad. However more profound are the ways in which some technologies reshape the very fabric of society with macro-ethical impacts. The invention of the stirrup revolutionised mounted combat, but as a side effect gave rise to the feudal system, which still shapes politics today. The internal combustion engine offers personal freedom and creates pollution, but has also transformed the nature of urban planning and international trade. When we look at AI the micro-ethical issues, such as bias, are most obvious, but the macro-ethical challenges may be greater. At a micro-ethical level AI has the potential to deepen social, ethnic and gender bias, issues I have warned about since the early 1990s! It is also being used increasingly on the battlefield. However, it also offers amazing opportunities in health and educations, as the recent Nobel prizes for the developers of AlphaFold illustrate. More radically, the need to encode ethics acts as a mirror to surface essential ethical problems and conflicts. At the macro-ethical level, by the early 2000s digital technology had already begun to undermine sovereignty (e.g. gambling), market economics (through network effects and emergent monopolies), and the very meaning of money. Modern AI is the child of big data, big computation and ultimately big business, intensifying the inherent tendency of digital technology to concentrate power. AI is already unravelling the fundamentals of the social, political and economic world around us, but this is a world that needs radical reimagining to overcome the global environmental and human challenges that confront us. Our challenge is whether to let the threads fall as they may, or to use them to weave a better future.