At about 11pm (UK time) on August 9th the TRM database
was “pruned”, removing all TRMs apart from the ones attached to
MusicBrainz tracks. This resulted in the database becoming about
>one-third of the size it was before.
Because TRM requests can now be served from memory instead of from disk,
>TRM responses are now much quicker,
which in turn means that
>we don’t have to refuse as many TRM requests
due to the server being too busy.
(Note that most of those linked graphs started in mid March 2004,
just before the TRM server’s memory was upgraded. This explains why
several of the graphs start with a sudden change in behaviour.)