Simon Willison’s Weblog

Blogmarks tagged javascript, comet in 2008

Filters: Type: blogmark × Year: 2008 × javascript × comet ×

FriendFeed launch a real-time API. This is huge: JSONP plus long polling Comet, with “everything since X” tokens to ensure you don’t miss anything. This is the first open Comet API I’ve seen anywhere. Combine this with FriendFeed’s regular API (which allows arbitrary message posting) and you’ve got a really powerful tool for hackers who want to experiment with Comet without rigging up their own infrastructure. # 22nd October 2008, 2:18 pm

Private Messages with cometD Chat. cometd-java (a Java servlet reference implementation of the Bayeux protocol) can be extended with BayeuxService subclasses that run within the server itself. # 16th October 2008, 2:14 pm

How Comet Brings Instant Messaging to meebo. “What started off as a hack appears to be fulfilling one of the most basic needs of the Web, which is live synchronous interaction”—Jian Shen # 27th July 2008, 11:18 am

Engineering @ Facebook: Facebook Chat. The new Facebook Chat uses Comet (long polling with a hidden iframe) against a custom web / chat server written in Erlang, designed to handle a launch to all 70 million users at once. It was tested using a “dark launch” period where live pages simulated chat request traffic without showing any visible UI. # 15th May 2008, 7:55 am

Persevere adds Comet Support. Persevere sounds neat: a RESTful HTTP/JSON data store (the interface reminds me of CouchDB) which recently gained the ability to “subscribe” to a resource and receive notifications of updates via comet. # 13th May 2008, 8:09 am

Comet at the Highland Fling. I thoroughly enjoyed the Highland Fling yesterday. Here are the slides from my talk on Comet. # 4th April 2008, 10:13 am

Internet Explorer 8 Readiness Toolkit. The new built-in development tools look similar enough to Firebug to make me very happy. Also of interest: Selectors API (for fast getElementsBySelector), CSS 2.1 support, support for XHTML style namespaces in HTML, an interesting Web Slices feature based on the hAtom microformat and 6 connections per host (up from 2) which should make Comet easier. # 5th March 2008, 6:28 pm

Gears 0.2 Released! New modules are HttpRequest and Timer, both for use within workers (which provide Erlang-style message passing concurrency). Particularly interesting is that the Gears HttpRequest module can be used for much cleaner Comet implementations in IE. # 5th March 2008, 12:21 am

$.comet (via) The first Comet (with Bayeux) plugin I’ve seen for jQuery—currently only handles long-polling over XMLHttpRequest, but still a promising start. # 9th January 2008, 8:31 am

Why we switched to Jetty. Zimbra (recently acquired by Yahoo!) are using Jetty for Comet. It sounds like they are using Bayeux as well. # 8th January 2008, 5:12 am

20,000 Reasons Why Comet Scales. Greg Wilkins coaxes Jetty and Bayeux in to supporting 20,000 simultaneous users per server while maintaining sub-second latency, using Amazon EC2 to run the benchmark. # 7th January 2008, 8:32 am