Michael Smedberg

When your webapp is serving up content that’s expensive to generate, you may want to serve it up asynchronously- via AJAX calls. This is particularly

Varnish is a high performance, flexible, open source HTTP accelerator. We started using Varnish at Redfin in our last major release, a few weeks ago.

In Hibernate, when you indicate that a domain object should not support lazy proxies, you make it hard for DAO writers to get their code to perform well. Worse, you disable a capability that they may be counting on, and they may not notice until there are major performance problems. Unless you have a good reason to, use “@Proxy(lazy = true)” on your domain objects.

vs. Redfin recently switched some of our backend DB infrastructure from MySQL to Postgres, and we plan to wholly switch to Postgres in the near

Writing rich date/time features in a web app can be a pain. Apps (such as schedulers) that do math on times (e.g. ordering times) should