Very close. We don't use the WAL (yet, slated for probably 8.1) but we
do use a transaction log shipping method. So the implementation is almost the same.
Can you run queries on the slave? If so, how do you handle xid collisions?
You can run any query that does not modify data on a replicated table. You can run any non data modifying query on any of the tables.
Sincerely,
Joshua D. Drake
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