Interesting piece of code that shows the time it takes bundler to require each of your dependencies.

Some good thoughts on unobtrusive ruby.

A simple event/notification mixin for Ruby.

Optimized JSON. Supposedly 2x faster than yajl. Impressive. Love the name too.

New metrics library from Eric Lindvall. Allows you to measure anything, store it in memory, and flush it to external services. Very cool.

Interesting use of bit sets to determine daily active users.

Creating an API, from RailsTips by John Nunemaker http://railstips.org/blog/

Long but good post on cleaning up your code.

Just tried this out tonight. Super handy for doing basic testing of HTML email.

Data securely stored in urls.

Easy to use DSL to retry code if an exception is raised.

Stackable dynamic tree based Rack router

Syntactic suger for http://pow.cx/

girl_friday is a Ruby library for performing asynchronous tasks. Often times you don't want to block a web response by performing some task, like sending an email, so you can just use this gem to perform it in the background. It works with any Ruby application, including Rails 3 applications.