Dancing About Architecture

FeedBurner is hiring in Chicago. Here's the job description:

Seeking several engineers to help us expand our offerings for publishers and advertisers. We iterate quickly, and let customers test our designs and suggest further requirements. Premium placed on thoughtful designs easily extended for future functionality. Required Skills: experience with commercial web applications. Server-side Java. Linux, Apache, MySQL. Four year degree or equivalent experience. Other: JSP, Struts, Ant, JUnit, Hibernate, Spring and RSS

Posted by Eric at 10:27 AM | Permalink | Comments (0)

In one of our recent profiling use cases, I noticed that twice as many ResultSet objects were being created than I expected, and that half of them were being created in the PreparedStatement.getWarnings() method. Turns out that we were using the Spring JdbcTemplate class (version 1.2.5) in one of our tight loops, and it calls PreparedStatement.getWarnings() after every execute, even if setIgnoreWarnings() is set to true.

Rewriting that section to not use the Spring framework gave us a 2.4% increase in throughput. Not earth-shattering, but it just goes to show that it's worthwhile to include the frameworks you depend upon in your optimization efforts.

Posted by Eric at 10:43 AM | Permalink | Comments (0)