Avoid memory leaks in your ruby/rails code and protect you against denial of service

We heard a lot about that Ruby is cool cause we do not have to care about memory, the garbage collector does it for us. Well, that’s kind of true, but this does not mean we can write code without keeping in mind on what’s is going on under our ruby code.

Ruby symbol memory leak

We all know that using symbols instead of strings is a good practice to have, it’s faster and it saves your memory. Yes but at what price ? Symbols are faster in part cause they are created just one time in memory, that’s great ! But then ? they will stay forever in memory …
That means, do not convert everything in symbol ! Be sure to well know what you are converting in symbol.

http://www.tricksonrails.com/2010/06/avoid-memory-leaks-in-ruby-rails-code-and-protect-against-denial-of-service/