I've got a web application connected to a database running MySQL.
Here's the problem: a not insignificant number of queries create temporary tables and many of the tables involved have BLOB fields. This means that I'm getting lots of temporary tables being created on disk (this behavior is described here http://dba.stackexchange.com/a/17679/16724) and this results in pretty crappy performance.
Is there by any chance an easy solution to this problem? Perhaps some fork or other pluggable engine? I'm actually running the Percona fork of MySQL (XtraDB), but it's the same problem with vanilla InnoDB. I'm frankly considering switching to Postgres.