Replication in 4.0.x
Slave is multi-threaded
Relay thread
Connects to master and copies queries to local
spool (relay log) without delay
SQL thread
Acts like 3.23.xx replication, but uses the local
relay log rather than connecting to the master
Faster than 3.23.xx
Less chance of lost queries
Transactions replicate properly
Copyright 2002, Jeremy Zawodny (Jeremy@Zawodny.com)