28 Oct
2004
28 Oct
'04
10:40 a.m.
Johan Johan wrote on 28/10/2004 09:02:10:
When it comes to zone updates we use a tcp/ip connection to the master server instead of altering the database directly. We don't need
to probe for db changes this way.
Well, that makes sense, but no one in their right mind is probing for changes since NOTIFY was defined many years ago.
As it happens we use probing not NOTIFY since it gives a greater level of control over the number of secondaries being updated at once (and the bandwidth) and the order in which they are updated. This does rely on strict calculations of the timings of changes and probes but that is fairly easy to do. Jay Daley Nominet UK