Postgres doesnt scale into oblivion, but it can take some serious chunks of data once you start batching and making sure a every operation only touches single row with no transactions needed.
Postgres doesnt scale into oblivion, but it can take some serious chunks of data once you start batching and making sure a every operation only touches single row with no transactions needed.
And then you are 99% of the way to Cassandra.
Of course the other 99% is the remaining 1%.
Nearly true, but you dont need to run a cassandra cluster to ship your 3k msg/sec and you can take smaller locks if you have a small number of senders that delete sent messages and send in chunks
cassandra doesn't have ACID, so you will start dealing with tons of other problems.