HTTP Response Caching for Java and Android

HTTP caching is both important, as it reduces bandwidth use and improves performance, and complex, as the rules are far from simple. In my experience, most Java and Android applications either don’t do HTTP caching, or they roll their own and up doing it wrong or in way too complicated a fashion. In other words, … Continue reading HTTP Response Caching for Java and Android

Best way to use HttpClient in Android

Many Android applications access the Internet resources over HTTP (and my projects are no exception). There are 2 common ways to do that: use Apache HttpClient 4.x (which is included in Android) or use HttpURLConnection (from Java). Google stated in a September 29, 2011 blog post that they prefer you use HttpURLConnection, but many apps … Continue reading Best way to use HttpClient in Android

Compression (deflate) and HTML, CSS, JS Minification in ASP.NET

As I’ve already demonstrated, I like performance. So I cache and compress a lot. When I was put onto an ASP.NET project at work, I obviously wanted to optimize the site, so here’s what I did. Taking some hints from Y! Slow, I decided I wanted to: Get rid of all the MS AJAX/toolkit javascript, … Continue reading Compression (deflate) and HTML, CSS, JS Minification in ASP.NET

EhCache implementation of OpenJPA caching

I usually use Hibernate, which supports a number of caching implementations (such as EhCache, oscache, JBoss, etc). My most recent project had a dependency on a product which has a dependency on OpenJPA, and OpenJPA only has it’s own built in implementations of a query cache and a data cache. I like to have one … Continue reading EhCache implementation of OpenJPA caching

Why would a cache include cookies?

Ehcache’s SimplePageCachingFilter caches cookies. And that baffles me… why would a cache include cookies in it? I ran into the interesting situation where servlets, interceptors, and all those other Java goodies were writing cookies for purposes like the current browsing user’s identifier so it could track that user on the site and keep track of … Continue reading Why would a cache include cookies?

HTTP Caching Header Aware Servlet Filter

On the project I’m working on, we’re desperately trying to improve performance. One of the approaches taken by my coworkers was to add the SimplePageCachingFilter from Ehcache, so that Ehcache can serve frequently hit pages that aren’t completely dynamic. However, it occurred to me that the SimplePageCachingFilter can be improved by adding support for the … Continue reading HTTP Caching Header Aware Servlet Filter