gregw

Wednesday Aug 04, 2010

ITConversation podcast on Cometd and Push Technology

Phil Windley of Tecnometria has recorded an interview with me on Cometd and Push Technology.  The podcast is available from ITConversations and provides an introduction to comet and cometd.[Read More]

Wednesday Jun 23, 2010

Cometd-2 Throughput vs Latency

With the imminent release of cometd-2.0.0, it's time to publish some of our own lies, damned lies and benchmarks.  It has be over 2 years since we published the 20,000 reasons that cometd scales and in that time we have completely reworked both the client side and server side of cometd, plus we have moved to Jetty-7.1.4 from eclipse as the main web server for cometd.[Read More]

Friday Jun 18, 2010

Lies, Damned Lies and Benchmarks

Benchmarks like statistics can be incredibly misleading in ways that are only obvious with detailed analysis. Recently the apache HTTPCore project released some benchmark results whose headline results read as having better performance than jetty in 3 out of 4 scenarios, and that jetty NIO sucked! So is HttpCore really an faster than Jetty and does Jetty NIO suck?
[Read More]

Tuesday Mar 02, 2010

Websocket Chat

The websocket protocol has been touted as a great leap forward for bidirectional web applications like chat, promising a new era of simple comet applications. Unfortunately there is no such thing as a silver bullet and this blog will walk through a simple chat room to see where websocket does and does not help with comet applications. In a websocket world, there is even more need for frameworks like cometd.[Read More]

Thursday Jul 02, 2009

Roadmap for Jetty-6, Jetty-7 and Jetty-8

This blog updates the roadmap for jetty-6, jetty-7 and jetty-8 with the latest plans resulting from the move to the Eclipse Foundation and the delay in the servlet-3.0 specification.[Read More]

Wednesday Jul 01, 2009

Google Wave - A new paradigm?

The announcement of Google Wave is a bold declaration of where google sees the future of the web. Google, unsurprisingly enough, sees the future of the web as a server side paradigm, with dynamic updates being used to drive the thin client model to capture even more of tasks that where once done client side.  Google are extending the server side model of webmail to apply to applications that have been fundamentally client side, such as document authoring, IM and chat.[Read More]

Friday May 22, 2009

Servlet 3.0 Proposed "Final" Draft

I previously strongly criticised the Servlet 3.0 JSR-315 process and the resulting Public Review Draft, describing it as a: "poor document and the product of a discordant expert group (EG) working within a flawed process" and of producing a "Frankenstein monster, cobbled together from eviscerated good ideas and misguided best intentions"

... I'd like to focus on the improved spirit of the group and highlight some of the technical achievements that have resulted.

[Read More]

Friday Jan 30, 2009

Cometd Grails plugin

Mingfai Ma has created a grails cometd plugin that combines grails 1.1, jetty-6.1 and cometd 6.1.12 to provide spring based grails application environment.
[Read More]

Sunday Dec 21, 2008

Servlet 3.0 Public Review : Update

I have been working on an implementation of the Servlet-3.0 asynchronous servlets with some the fixes/extensions I suggested in my previous blog and from some continuing discussion within the EG. This implementation demonstrates that significant asynchronous behaviour can be implemented without the complexities of redispatching wrapped requests or the forward(path) methods.[Read More]

Wednesday May 09, 2007

Servlets 3.0

I'm just fresh out of a session at JavaOne where Sun have revealed their road map for the servlet 3.0 specification. My initial reaction is that it contains both some good and bad items as well as quite a few concerns in between. The 10 words or less version is: Annotations, JSF, Ajax, Comet, REST, scripts, security and Misc.[Read More]

Monday Feb 19, 2007

Clustering cometd with Terracotta.

I recently attended a Torino JUG meeting and saw Jonas Bonér speak about transparent clustering with Terracotta. It was an interesting talk and went a long way to alleviating the concerns I have with the star architecture of terracotta. Thus I wanted to try out a terracotta cluster, but I thought that simply clustering HTTP session in jetty was a bit obvious, easy and above all boring. So instead I used terracotta to cluster the jetty implementation of cometd.[Read More]

Tuesday Feb 13, 2007

Marc Fluery leaves JBoss/Redhat

So Marc Fluery has left JBoss/Redhat and thus brings to an end a chapter of the story of professional open source.[Read More]

Sunday Jan 07, 2007

Jetty 6.1.0 Release

The Jetty 6.1.0 release is now available via http://jetty.mortbay.org. It represents both a stabilization of the features already released in 6.0.x, plus a raft of new features. For a full description of Jetty 6.1, see http://docs.codehaus.org/display/JETTY/.[Read More]

Sunday Dec 17, 2006

Unit Test Servlets with Jetty

This rainy weekend, I was inspired by a question from hani about testing servlets. As a result I've added a module to Jetty to simply test servlets with an embedded server configured by the ServletTester class. The HTTP requests and responses for testing can be generated and parsed with the HttpTest class.[Read More]

Friday Dec 08, 2006

Gaming with GWT and Jetty continuations

The Google Widget Toolkit allows Ajax applications to be developed in java code using the traditional UI widget paradigm. The toolkit includes support for RPC, but not for comet style Ajax push. I've been working with Ryan Dewsbury of www.aplayr.com to convert their GWT powered games of risk and pocker to use Jetty continuations. First... play a lot of poker![Read More]

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