ActiveDOM
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The document discusses using jQuery to map database columns to DOM elements to allow easy manipulation of data in the DOM. It recommends making the DOM represent data semantics, abstracting DOM interaction, and using JSON for data transfer. Key aspects are mapping database columns to getter and setter functions for corresponding DOM elements, and using this mapping to build plugins for common operations like getting, setting, adding and deleting data in the DOM.
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Node.js - As a networking tool
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Node.js - Best practices
Node.js - Best practicesFelix Geisendörfer This document discusses best practices for handling errors and callbacks in Node.js applications. It covers techniques like error delegation, exception handling, error-first callbacks, avoiding nested callbacks, and using control flow libraries. It also discusses deployment strategies like using screen, restarting crashed processes, and innovating with platforms like Joyent, Nodejitsu and Heroku.
Node.js - A practical introduction (v2)
Node.js - A practical introduction (v2)Felix Geisendörfer This document provides an introduction to Node.js including its history, uses, advantages, and community. It describes how Node.js uses non-blocking I/O and JavaScript to enable highly scalable applications. Examples show how Node.js can run HTTP servers and handle streaming data faster than traditional blocking architectures. The document recommends Node.js for real-time web applications and advises against using it for hard real-time systems or CPU-intensive tasks. It encourages participation in the growing Node.js community on mailing lists and IRC.
Nodejs a-practical-introduction-oredev
Nodejs a-practical-introduction-oredevFelix Geisendörfer Talk given at Øredev on Nov 9, 2011. Includes a brief history, current status and practical applications of node.js.
Building an alarm clock with node.js
Building an alarm clock with node.jsFelix Geisendörfer Felix Geisendörfer discusses how he hacked together a node.js alarm clock to help him wake up earlier in the morning. He talks about how previous attempts like behavioral conditioning and multiple alarms did not work. His node.js solution reliably wakes him up at any time he chooses by playing music through VLC. He then contrasts hacking, which is playful cleverness, with engineering, which is the rigorous application of science. While hacking can be a good solution, engineering is needed for things like libraries, domain logic, and performance. The talk encourages hacking to start but engineering more complex problems.
How to Test Asynchronous Code (v2)
How to Test Asynchronous Code (v2)Felix Geisendörfer The document discusses testing asynchronous Node.js code. It describes the current approach of using callbacks in tests but notes issues with this approach. It then discusses using stubs and mocks to make asynchronous code synchronous so it can be tested more easily. Finally, it discusses the benefits of writing many small "microtests" that isolate and test individual functions and paths through the code rather than large integration tests.
How to Test Asynchronous Code
How to Test Asynchronous CodeFelix Geisendörfer My nodeconf talk from May 5th. Reworked / better slides are available in my second version of the talk at the BerlinJS group from May 19th.
Nodejs - A quick tour (v6)
Nodejs - A quick tour (v6)Felix Geisendörfer This document provides an overview and introduction to Node.js. It discusses that Node.js is a platform for building scalable network applications using JavaScript and uses non-blocking I/O and event-driven architecture. It was created by Ryan Dahl in 2009 and uses Google's V8 JavaScript engine. Node.js allows building web servers, networking tools and real-time applications easily and efficiently by handling concurrent connections without threads. Some popular frameworks and modules built on Node.js are also mentioned such as Express.js, Socket.IO and over 1600 modules in the npm registry.
Nodejs - A quick tour (v5)
Nodejs - A quick tour (v5)Felix Geisendörfer Node.js is a JavaScript runtime built on Chrome's V8 engine. It allows JavaScript to be run on the server-side. Node.js avoids blocking I/O operations by using non-blocking techniques and event loops. It provides APIs for common tasks like HTTP servers, filesystem access, and more. While still in development, Node.js has found success in building real-time applications and APIs due to its asynchronous and non-blocking architecture.
Nodejs - Should Ruby Developers Care?
Nodejs - Should Ruby Developers Care?Felix Geisendörfer Node.js is a platform for building scalable network applications. It uses Google's V8 JavaScript engine and a non-blocking I/O model. Some key points:
- Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, especially for real-time applications.
- It has a large ecosystem of open source modules. Popular frameworks include Express and Fab.
- While Node.js is very fast for I/O operations, memory usage can grow quickly and scaling to multiple cores requires multiple processes.
- The author argues Node.js is suitable for single-page apps, real-time applications, and crawlers, but
Nodejs - A quick tour (v4)
Nodejs - A quick tour (v4)Felix Geisendörfer - Node.js is a platform for building scalable network applications. It uses non-blocking I/O and event-driven architecture to handle many connections concurrently using a single-threaded event loop.
- Node.js uses Google's V8 JavaScript engine and provides a module system, I/O bindings, and common protocols to build network programs easily. Popular uses include real-time web applications, file uploading, and streaming.
- While Node.js is ready for many production uses, things like lost stack traces and limited ability to utilize multiple cores present challenges for some workloads. However, an active community provides support through mailing lists, IRC, and over 1,000 modules in its package manager.
Node.js in production
Node.js in productionFelix Geisendörfer Node.js in Production
- Felix Geisendörfer discusses his experience running Node.js in production environments over time with Transloadit, moving from early failures to a stable architecture running over 2TB of data without bugs. He covers lessons learned around hosting, deployment, monitoring, debugging, testing and load balancing Node.js applications at scale.
Nodejs - A-quick-tour-v3
Nodejs - A-quick-tour-v3Felix Geisendörfer Node.js is a server-side JavaScript platform for building scalable network applications. It uses non-blocking I/O and event-driven architecture, which makes it very efficient for data-intensive real-time applications that run across distributed devices. Some key features of Node.js include CommonJS modules, child processes, HTTP servers, TCP servers, DNS lookups, file watching and a package management system. Popular applications built with Node.js include web frameworks, real-time applications, crawlers and streaming.
Dirty - How simple is your database?
Dirty - How simple is your database?Felix Geisendörfer The document discusses Dirty, a simple in-memory NoSQL database written for Node.js. Dirty stores data as JSON documents in an append-only log on disk and supports common CRUD operations through a simple JavaScript API. Benchmarks show Dirty can process millions of operations per second but hits scaling limitations with over a million records as it keeps all data in memory. The document explores possibilities for building databases that combine memory and disk storage and support features like replication to scale beyond these limits.
Node.js - A Quick Tour II
Node.js - A Quick Tour IIFelix Geisendörfer Node.js is an asynchronous event-driven JavaScript runtime that aims to build scalable network applications. It uses an event loop model that keeps the process running and prevents blocking behavior, allowing non-blocking I/O operations. This makes Node well-suited for real-time applications that require two-way connections like chat, streaming, and web sockets. The document outlines Node's core components and capabilities like modules, child processes, HTTP and TCP servers, and its future potential like web workers and streams.
Node.js - A Quick Tour
Node.js - A Quick TourFelix Geisendörfer Node.js is an asynchronous event-driven JavaScript runtime that aims to provide an easy way to build scalable network programs. It uses an event loop model that keeps slow operations from blocking other operations by executing callbacks asynchronously. This allows Node.js programs to handle multiple connections concurrently without creating new threads. Common uses of Node.js include building web servers, real-time applications, crawlers, and process monitoring tools. The document provides examples of using modules like HTTP, TCP, DNS, and file system modules to demonstrate Node.js's asynchronous and non-blocking I/O model.
With jQuery & CakePHP to World Domination
With jQuery & CakePHP to World DominationFelix Geisendörfer This document discusses using jQuery and CakePHP together for web development. It describes how jQuery can be used to simplify tasks like including JavaScript files and passing data from controllers to views. The author proposes using "jayDom", which involves encoding data in HTML microformats for semantic encoding and easy parsing between the browser and server via Ajax. Real-world examples are provided to illustrate accessing and updating microformat data with jQuery selectors. The goal is to more easily achieve "world domination" by building powerful applications with these techniques.
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