So I decided to do some testing and it went really bad, with locking all over the place. I have the following options set: ``` PRAGMA journal_mode = WAL; PRAGMA temp_store = MEMORY; PRAGMA synchronous = NORMAL; PRAGMA cache_size = -64000; ``` I have a small PHP script that inserts a single row with some random data into a table. The script gets called in a loop from just two different machines on the network. ``` SQLite3::prepare(): Unable to prepare statement: 5, database is locked in ... ``` I have tried various changes to the settings, but I get the same result. About half of the queries fails with the locking warning. I had ecspected the queries to build up in a queue, seeing a decrease in write speed, but they don't queue, they just block. I am thinking it is because of the multi-threaded nature of a PHP web application? Am I missing something?