On 12/9/2013 11:24 AM, Ben Chobot wrote:

Out of curiosity what did you find unclear about
http://www.postgresql.org/docs/9.3/static/different-replication-solutions.html?

Perhaps the "Per-table granularity" line in the matrix (Table 25-1) might be better written as:

"Synchronization Granularity"

Columns 1-3 and 5 could say "Entire Cluster". Column 4 might say "Selected tables (Slony)", and I'm not sure off-hand what granularity #6 (Bucardo) is capable of. Column #7 might just say "Varies".

For someone not familiar with what exactly WAL files are, it's not clear that solution #3 is an all-or-nothing approaches at the cluster level. Now that I've refreshed my memory on how WAL files work (and at what level in the pgsql cluster), I understand why #3 works the way it does.


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