I thought some of you might be interested in a new gemified Rails
database adapter I put together to make it easier to use a single write
master and multiple read-only slave Mysql databases. I've called it
(cleverly) MysqlReplicationAdapter.

You can install it via:
gem install mysql_replication_adapter

And after configuration, you make use of it by:
MyModel.find(:all, :use_slave =>  true)

which will cause the database adapter to select a random slave database
to run the query against. There's more information up on the Rapleaf
Engineering Blog at http://blog.rapleaf.com/dev/?p=5. Check it out and
let me know if it's useful to you as well!

-Bryan
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