Hi list

We've been using roundcube with great success sor far.

Having this configuration:
3 web servers, one of them acts as the database, the other 2 connect to it

server1 -> mysql,apache
server2 -> apache
server3 -> apache

What is the best practice to load-balance the database? I would like to avoid mysql-cluster if possible.
The database seems fairly busy, as it is caching messages from 3 webservers

Thanks!
Javier