Reverberations

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Archive for the ‘Jetty’ Category

Static File Retrieval From Web Server Quicker Than Browser Cache

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It’s a small not-very-useful exercise, but, as the result is unexpected for me – here it is.

I’ve created a web page where two images are served as static files, and two images are served by a Java Servlet. The images served as static files (top two images) are cached by the browser for future runs.

The results are as following:
Jetty:

[Server]
jetty-server-1.png

[Cache]
jetty-cache-1.png

Tomcat:

[Server]
tomcat-server-1.png

[Cache]
tomcat-cache-1.png

The actual numbers are irrelevant, but the relative ratios consistently demonstrate that the web server “can” serve images much quicker (disregarding network latency) than the browser can retrieve them from cache. As expected, web servers serve static files quicker than they can serve Java Servlets.

Sidenote: damn, browser image resize is ugly.

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Written by Brajesh

January 1, 2008 at 4:19 pm

Posted in Coding, Java, Jetty, Tomcat

Jetty/JBoss Code Redeployment Slow on Eclipse

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I’ve downloaded Jetty Server Adapter for Eclipse recently. Jetty is supposedly very nimble Java-based HTTP Server and Servlet Container. I’m not sure if I’m doing it wrong, but I find code redeployment very slow and buggy when using Jetty on Eclipse. Even Jboss, another heavy duty application server, is bad on Eclipse with 15-25 second redeployment time.

So far I’ve found only Tomcat to be suitable for development with almost instant redeployment.

Another nuisance is that Jetty relies on the presence of PID file ( on my RHEL 4.2) to determine whether it’s running or not, which is, more often than not, inaccurate as I usually close Eclipse without shutting down Jetty server. Tomcat is much more stable in that sense. However, Jetty seems much more exciting to develop “for” (as opposed to “on”) as it has continuations, a very clever hack/feature.

I suppose that the preferred way to develop on Jetty is to use Maven, and Jetty Server Adapter will improve with future releases of WTP/Eclipse milestones.

Written by Brajesh

December 19, 2007 at 11:18 am