gregw

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 May 27, 2009

Webtide/Jetty gathering at JavaOne

For SnoracleZero (aka Java One) this year, we are planning a social get together of Jetty users and Webtide clients  8pm Tuesday (June 2).[Read More]

Thursday May 21, 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]

Monday Apr 27, 2009

Jetty Webinar - 27 April

Greg Wilkins will be presenting a webinar on Jetty @ http://live.eclipse.org April 27 - 1:00 pm PDT / 4:00 pm EDT / 8:00 pm GMT[Read More]

Thursday Mar 26, 2009

Jetty @ EclipseRT

The jetty @ eclipse project is now in incubation at the eclipse foundation as part of the EclipseRT runtime project. On Tuesday 24th March, the Jetty-7 code base was converted to org.eclipse.jetty package space and checked into the eclipse jetty svn repository!!![Read More]

Wednesday Mar 11, 2009

Cometd Acknowledged Message Extension

With the release of the latest cometd-jetty in Jetty 6.1.15, the oft requested feature of reliable message delivery is now supported by the Acknowledged Message Extension in the jetty server and in the dojo and jquery clients... ... provide an acknowledged message mechanism for reliable message delivery.[Read More]

Saturday Dec 20, 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]

Tuesday Dec 16, 2008

Servlet 3.0 Public Review

JSR-315 has produced a Public Review (PR) of the servlet 3.0 specification, which unfortunately is a poor document and the product of a discordant expert group (EG) working within a flawed process.[...] Significant effort has been put into the PR proposal [...]  but  unfortunately it has become a Frankenstein monster, cobbled together from eviscerated good ideas and misguided best intentions. The 8 methods of the ED proposal that were rejected as being too complex and confusing have been replaced by 20 methods and 3 new interfaces!  [...] The EG is desperately in need of community feedback and probably another round of Public Review after a beta RI is made available.

[Read More]

Friday Aug 15, 2008

Asynchronous Restful Webapplication

This blog annotates the Jetty 7 example web application that uses Jetty asynchronous HTTP client and the proposed suspendable servlets 3.0 API, to call an eBay restful web service.   The technique combines the Jetty asynchronous HTTP client with the Jetty servers ability to suspend servlet processing, so that threads are not held while waiting for rest responses. Thus threads can handle many more requests and web applications using this technique should obtain at least ten fold increases in performance.[Read More]

Saturday Aug 09, 2008

Bad Robot! Google Android is evil

Webtide has been putting some effort into porting Jetty onto Google's Android mobile phone platform. We were seduced to expend this effort by the promise from Google that android would provide "a new level of openness".  Yet we may be forced to abandon this effort as Google's bad robot breaks Asimovs 3 laws of Robotics as they have been modified for openness by the the eclipse foundation.[Read More]

Friday Apr 11, 2008

Jetty Improves in Netcraft survey (again)

As with most open source projects, it's very hard to get a measure of who/how/where/why Jetty is being used a deployed.  Downloads long ago became meaningless with the advent of many available bundling and distribution channels.   The Netcraft Web Survey is one good measure, as it scans the internet and identifies which server sites run. In the results released April 2008, Jetty is identified for 278,501 public server, which is 80% of the market share of our closest "competitor" tomcat. If we exclude unknowns and others catagory, Jetty is currently 12th in the league table of identified servers of all types and closing in on a top 10 ranking .
[Read More]

Thursday Nov 22, 2007

Asynchronous IO is hard!

The tomcat 6 developers have proposed an asynchronous IO extension as their solution for Comet and Ajax push.  I have long argued that asynchronous handling is needed for Servlets (for comet and other use-cases), but that it is very important to make the distinction between asynchronous IO and asynchronous handling of requests. Asynchronous programming is hard and asynchronous IO even harder.  I maintain that asynchronous IO should be implemented by the container and that only asynchronous events should be delivered to an asynchronous servlet. As if to illustrate my point,the example code that tomcat provide for their asynchronous IO contains some classic bugs and inefficiencies that I examine here as they well illustrate why we should be making all efforts possible to encapsulate asynchronous IO below the level of the servlet API.
[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]

Saturday Jan 06, 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]

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