Blog

Jul 19

Real-time Comet Applications on Node with Tunguska

By on July 19, 2010 4:34 am
This entry is part 11 of 12 in the series Server-Side JavaScript, Pintura, and Persevere 2.0

Node is a server-side JavaScript platform that is known for being well suited for Comet-style applications that utilize long-lived connections to allow applications to send messages from the server to the browser asynchronously. In fact, the beginning of the front page of nodejs.org starts out with an example of a web application that delays for a couple seconds before sending a response without any type of blocking; the code is asynchronous and efficient.

However, building a real-life real-time application involves more than just a platform that gives you asynchronous communication, there are a number of other important techniques to understand. We will look at these techniques and introduce project Tunguska that provides some helpful tools to assist in building applications. While a number of Comet projects out there attempt to provide a black box solution to Comet, Tunguska recognizes that most real-time applications involve deep integration into the application and its security, messaging, and data structures. Consequently Tunguska is a set of tools for building real-time applications rather than a closed black box that can’t easily be integrated with. Let’s look at some of these tools.

Jul 14

Multi-node: Concurrent NodeJS HTTP Server

By on July 14, 2010 9:55 am
This entry is part 12 of 12 in the series Server-Side JavaScript, Pintura, and Persevere 2.0

NodeJS has demonstrated impressive performance potential as an HTTP server. By combining highly optimized HTTP parsing algorithms with the speedy V8 JavaScript engine and using an event-based architecture, Node has posted eye-opening request handling numbers. However, Node historically has been limited by its inability to provide true concurrent request handling, greatly limiting its ability to leverage increasingly multiple core servers. The latest release of Node introduced new functionality for socket sharing that can be coupled with child process spawning to achieve concurrent multi-process request handling for a single TCP socket. Multi-node exists to leverage this capability to make it simple to start up a multi-process Node server.