My table is a statistics counters table, so I can live with a partial
data
loss, but not with a full data loss because many counters are weekly and
monthly.
Unlogged table can increase speed, this table has about 1.6 millions of
update per hour, but unlogged with a chance of loss all information on a
crash are not a good idea for this.
You could use an unlogged table for hourly updates, and periodically,
accumulate those counters to a (logged) daily/weekly table...
The hourly table could be rebuilt by examining only 1 hour's worth of
data, so it isn't too much of a problem if it's lost. The other tables
would get much less updates.
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