[aetherson]

With Postgres, you also need to worry a lot about tombstoning and your ability to keep up with the vacuums necessary to deal with highly mutable data. This can depend a lot on what else is going on with the database and whether you have more than one index on the table.

[Rapzid]

One strategy for mitigating vacuum costs would be to adopt an append-only strategy and partition the table. Then you can just drop partitions and avoid the vacuum costs.

Really depends on the needs but this can unlock some very impressive and sustainable throughputs.