Recent code – FastImage resize, Scrooge and Read From Slave
Filed in rails, ruby | 14 July, 2009
A roundup of some of my projects that may be of interest:
This builds on my work on FastImage to provide an image resize facility. The resize code calls libgd to do the work of resampling and resizing the image – this is a library that is very likely to be already installed on your system if it is some flavour of unix / linux or even OSX. And if not, it is very easy to install. This is a light and simple option if you don’t wish to install heavier libraries such as RMagick (which relies on ImageMagick or GraphicsMagick) or ImageScience (which relies on FreeImage).
2. Scrooge
This is a plugin and gem to optimise queries to the database based on a learning algorithm that looks at how the results of each query are used. I worked on this with Lourens Naudé earlier this year, and I will shortly make a minor release with a few further optimisations and tests. Try this if your database is slowing you down, but also see slim-attributes if you are using MySQL.
A gem to force your database reads to a slave database while your writes go to the master. It’s fast and simple, it works a treat, and we have it in production use.
RSS