PostgreSQL, it also has the advantage, that SQLite is modelled after pgsql, so porting is going to be slightly easier than MySQL. Also, both of them (MySQL and

PostgreSQL, it also has the advantage, that SQLite is modelled after pgsql, so porting is going to be slightly easier than MySQL. Also, both of them (MySQL and PostgreSQL) can handle an enormous amount of concurrent work at very high speed. Unless you are relying on optimizing nanoseconds in response time, you will never feel the difference...