Ever need to find out what a color on your screen is in hex or rgb? Anyone doing any kind of design work has probably run into this before, and there are things out there you can install to do this... But I just discovered that OS X has a tool for this built in, and it's really quite good!
It's cal…
When you have a high traffic app that is going to be repeatedly making the same requests that won't change a lot from the database, It's obviously a good idea to store these results in memory instead of hitting the database every time you need the data.
Rails provides some nice built in caching mec…