Node.js, for architects - OpenSlava 2013

Oct 13, 201324 likes13,722 views

These are the slides that were used for my presentation on Node.js in OpenSlava 2013 (October 11th, 2013, Bratislava) and provide an introduction to Node.js as well as analyze the potential effects of introducing Node.js in an enterprise and from an architectural perspective.

Oscar Renalias
Getting started with Node.js
October 11, 2013

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Node.js, for architects - OpenSlava 2013

Javascript
•

Dynamically typed

•

Supports functions/closures

•

Object-oriented with prototype-based inheritance

•

Standardized as ECMAScript

V8: High Performance JavaScript Engine
•

JIT to native: x86, ARM and MIPS

•

On-the-fly recompilation of “hot” functions with an
optimizing compiler

•

ECMAScript compliant

Asynchronous, Event-based

Event
producers

Event
Event

Event

Callbacks

Single threaded, asynchronous, event-based!

Wait for
callback

Wait for
I/O

Wait for
I/O

Callback
ready

So why are async and events good?
•

Easier to write

•

Scales better

•

Lower memory, CPU overhead

Awesome Package management

•

Gets out of the way

•

Support for internal and public modules

•

Kiss problems with transitive dependencies goodbye

Community modules
http://npmjs.org

Interesting Projects: Express
•

Minimal web application framework

•

Additional features are provided as modules or
middleware: template engines, models, authentication
and authorization, etc

Interesting Projects: Socket.io
•

Provides support for server-initiated push events using
WebSockets, Ajax polling, Iframe, JSONP or Flashbased channels

•

Transparent for both clients and servers

•

Can run standalone or integrated with Express

SERVER

CLIENT

Interesting Projects: Meteor
•

Next-gen framework for real-time collaborative web
applications

•

Live page updates

•

Support for offline databases with subsequent
synchronization

When to use Node.js
•

REST+JSON APIs

•

Backend for single-page web apps: same language in
client and server

•

Real-time web apps with Socket.io and Meteor

•

Quick prototyping

•

Rapidly evolving applications: media sites, marketing,
etc

When not to use Node.js
•

CPU-bound tasks

•

Multi-threaded applications

•

Applications that have to process large amounts of
data

•

Boring CRUD-type web apps

Maturity
•

Under development since 2008

•

Node.js 1.0 around the corner

•

Nearly 40000 modules available via npm

•

Awesome community

•

Commercial support

Performance

Test: multiple database queries per request, serialized as JSON
responses

More Performance

Test: return a response as a simple serialized JSON object
Source: http://www.techempower.com/benchmarks/

Javascript

Weird
shit

Like Java, with
simple syntax
and no types

JavaScript is quirky different
•

Prototype-based inheritance

•

“==“ versus “===“

•

The meaning of “this”

•

Call, apply and bind in Function.prototype

And more.

Toolset
•

Large selection of testing libraries: unit testing,
functional testing, BDD

•

Static code analysis (JsHint)

•

IntelliJ IDEA, Eclipse (Nodeclipse) integration:
highlighting, refactoring, debugging

•

Integration with Jenkins/Hudson, Node.js specific CI
servers

•

NPM supports internal module repositories

Architects have a little bit of extra work
Node.js currently lacks standards; extra effort and
care must be paid to
•

application architecture,

•

development lifecycle,

•

code quality,

And many more.

Is it commercially supported?
Joyent is the corporate
steward of Node.js, the
world’s best runtime for
today's data-intensive,
real-time applications.
Joyent offers exclusive
debugging and
performance analysis
tools for Node.js
applications.

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Node.js is an introduction to the Node.js platform for developing server-side JavaScript applications. It discusses Node.js background and architecture, JavaScript basics, installing Node.js and setting up a development environment. It then demonstrates building a simple web application using Express and connecting it to MongoDB. The document provides an overview of Node.js advantages like asynchronous non-blocking I/O and event-driven model that make it well-suited for real-time applications and APIs.

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JavaScript was created in 1995 and became a standard in 1997. Node.js was created in 2009 using Google's V8 JavaScript engine, allowing JavaScript to be used for server-side applications. Node.js is well-suited for building scalable web servers, APIs, and real-time applications due to its asynchronous, non-blocking architecture that uses callbacks and an event loop. Modules are used to add functionality to Node.js applications, and can be installed via the NPM package manager.

NodeJS ecosystemYukti Kaura

Node.js is well-suited for applications that require lightweight concurrency and asynchronous I/O. It uses an event-driven, non-blocking model that makes it efficient for real-time applications with high concurrency needs, such as chat, live data feeds, and web site monitoring dashboards. While Node.js performs well for lightweight operations, heavier CPU-intensive tasks may be better suited for Java/J2EE due to its multi-threading capabilities. The Node.js ecosystem is growing rapidly but still less mature than Java/J2EE's established ecosystem.

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“Node's goal is to provide an easy way to build scalable Network programs” Asynchronous i/o framework Core in c++ on top of v8 Rest of it in javascript Swiss army knife for network Related stuffs Can handle thousands of Concurrent connections with Minimal overhead (cpu/memory) on a single process It’s NOT a web framework, and it’s also NOT a language • Created by Ryan Dahl in 2009 • Development && maintenance sponsored by Joyent • License MIT • Last release : 0.10.31 • Based on Google V8 Engine • +99 000 packages

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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.

Special Meetup Edition - TDX Bengaluru Meetup #52.pptxshyamraj55

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

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.

Cybersecurity Identity and Access Solutions using Azure ADVICTOR MAESTRE RAMIREZ

Noah Loul Shares 5 Steps to Implement AI Agents for Maximum Business Efficien...Noah Loul

Artificial intelligence is changing how businesses operate. Companies are using AI agents to automate tasks, reduce time spent on repetitive work, and focus more on high-value activities. Noah Loul, an AI strategist and entrepreneur, has helped dozens of companies streamline their operations using smart automation. He believes AI agents aren't just tools—they're workers that take on repeatable tasks so your human team can focus on what matters. If you want to reduce time waste and increase output, AI agents are the next move.

ThousandEyes Partner Innovation Updates for May 2025ThousandEyes

Splunk Security Update | Public Sector Summit Germany 2025Splunk

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.

Role of Data Annotation Services in AI-Powered ManufacturingAndrew Leo

Build Your Own Copilot & Agents For DevsBrian McKeiver

Drupalcamp Finland – Measuring Front-end Energy ConsumptionExove

Generative Artificial Intelligence (GenAI) in BusinessDr. Tathagat Varma

Into The Box Conference Keynote Day 1 (ITB2025)Ortus Solutions, Corp

What is Model Context Protocol(MCP) - The new technology for communication bw...Vishnu Singh Chundawat

The MCP (Model Context Protocol) is a framework designed to manage context and interaction within complex systems. This SlideShare presentation will provide a detailed overview of the MCP Model, its applications, and how it plays a crucial role in improving communication and decision-making in distributed systems. We will explore the key concepts behind the protocol, including the importance of context, data management, and how this model enhances system adaptability and responsiveness. Ideal for software developers, system architects, and IT professionals, this presentation will offer valuable insights into how the MCP Model can streamline workflows, improve efficiency, and create more intuitive systems for a wide range of use cases.

tecnologias de las primeras civilizaciones.pdffjgm517

IEDM 2024 Tutorial2_Advances in CMOS Technologies and Future Directions for C...organizerofv

Big Data Analytics Quick Research Guide by Arthur MorganArthur Morgan

Greenhouse_Monitoring_Presentation.pptx.hpbmnnxrvb

Dev Dives: Automate and orchestrate your processes with UiPath MaestroUiPathCommunity

This session is designed to equip developers with the skills needed to build mission-critical, end-to-end processes that seamlessly orchestrate agents, people, and robots. 📕 Here's what you can expect: - Modeling: Build end-to-end processes using BPMN. - Implementing: Integrate agentic tasks, RPA, APIs, and advanced decisioning into processes. - Operating: Control process instances with rewind, replay, pause, and stop functions. - Monitoring: Use dashboards and embedded analytics for real-time insights into process instances. This webinar is a must-attend for developers looking to enhance their agentic automation skills and orchestrate robust, mission-critical processes. 👨‍🏫 Speaker: Andrei Vintila, Principal Product Manager @UiPath This session streamed live on April 29, 2025, 16:00 CET. Check out all our upcoming Dev Dives sessions at https://community.uipath.com/dev-dives-automation-developer-2025/.