OS X Flush DNS Cache

To flush the  DNS cache in OS X (as superuser):

lookupd -flushcache (Tiger)

dscacheutil -flushcache (Leopard and later)

Firefox – Enable/Disable Javascript Caching

To enable/disable Javascript caching in Firefox in about:config:

network.http.use-cache = true/false

HTTP Headers

A good summary of HTTP headers is at Useful HTML Meta Tags

CacheMoney

Introducting CacheMoney – in-memory database cache. I find it hard to believe this work for anything but small volumes of data.

Sources on github

Rails Cache Busting

# Disable RAILS asset id query string
ENV['RAILS_ASSET_ID'] = ”