Which is somewhat sad; as most of my database calls end up passing through SQLite in gearmand on their way out to the larger DBs. (Hi PostgreSQL!)
SQLite's a great asset when all you need from the frontend is simple sets of relational data. Ask a more powerful database to gather results asynchronously with gearmand, collect them in SQLite and process them.
In particular, it's made things so much easier to migrate away from Oracle's MySQL to open PostgreSQL. Having pggearman is also much sweeter. Being able to spread my load across 6 servers and running some queries in parallel has also been a tremendous performance boost.