Reiner Dassing <dassing@wettzell.ifag.de> writes:
> The primary index must be the epoch.
> As there will be no deletion from this data I fear - due to the
> internal representation of B-trees - the performance will degrade very
> soon.
Nonsense. btree should work just fine for that. Use a timestamp
column for the primary key, and away you go.
(Actually, time alone doesn't seem like it'd be necessarily unique,
so maybe you don't want to call it a primary key. But certainly
you can make a non-unique index on that column.)
regards, tom lane