I wrote an article about how to use static page caching with Ruby on Rails. While this covers basics that have been covered many times before on other blogs and websites, it also explains why all parameter validation checking should be done before an action method is called, otherwise Bad Things Will Happen.
At the time, I didn’t know this, so I didn’t search for or stumble into articles that warned against this. Hopefully this is article will help prevent Rails beginners from running into the same problem.
The article can be found here.