I have not posted anything here for a long time. It’s hard to start blogging again, so I will write a short tips and tricks series called “Memo“. Today I’m going to talk about two Ruby gems I’m using in all my Ruby on Rails project: mysql and memcached. Every time I try to install or update those gems on Mac OS X following error occurs:

And then I’m googling on how to install these gems. It’s time simplify my life and post commands here.

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You definitely should watch it. Gregg Pollack and Jason Seifer from RailsEnvy present:

Part 1. Ruby on Rails vs Java

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If you are creating Ruby on Rails application like a blog, you most probably want to generate URLs using post titles. It’s good practice, because search engines like keywords in URL, and it looks more human-readable. Just compare: http://example.com/posts/10 and http://example.com/posts/generating-permalinks-from-string (yeah, it’s long, but self-descriptive). Anyways, this is small post about converting a title to a permalink.

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Rails is just an interface to the memcached?

Cache the Hell out Everything
90% API Requests — cache them

Read the Scaling Twitter.

When I worked on Best Tech Videos with Alexey Kovyrin, we faced a problem of filtering videos by category with selecting posts categories in the same query. It was easy to solve the problem, but there is one query optimization trick exists.

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