. and I added a wraparound failsafe to autovacuum/VACUUM, which will appear in Postgres 14: git.postgresql.org/gitweb/?p=post - CC
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Great to see aspects of this problem being tackled! cc:
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There are quite a few improvements to VACUUM in Postgres 14 besides this one. All of these other enhancements are performance related. I believe that they'll make autovacuum a lot more *predictable* in the real world, which seems especially important now.