On Sun, 2012-06-24 at 04:20 +1000, Dominic Malolepszy wrote: > On 24/06/12 3:39 AM, Timo Sirainen wrote: > > On Sun, 2012-06-24 at 03:36 +1000, Dominic Malolepszy wrote: > >> Hi, > >> > >> I am wondering if Dovecot caches SQLite queries, and how well it works > >> in high performance setups. I am particularly interested because in the > >> below thread SQLite has been suggested as a means of Dovecot proxying > >> connections to different ports. > > You can enable auth cache: > > http://wiki2.dovecot.org/Authentication/Caching > > > > > > This is a per user caching though, it will still have to perform a sql > look up each time a unique user authenticates to determine what port the > proxy should forward each connection. Is that accurate?
It caches the passdb lookup. The cache key consists of the given % variables in the SQL query. So if your SQL query doesn't contain %n/%u then the cache doesn't add per-user entries.
