Need replication? Gotta write your own sharding logic or set up pg_shard.
Need aggregations? Gotta write your own logic. Will you do them on the fly? Use triggers? On demand?
Need to remove old data? Gotta set up a cron job. But wait, what if I want to age different series at different rates? Now you need a policy system. Sigh.
Not saying Postgres can't be the storage engine, but there's a lot of work to do on top of that.
Need replication? Gotta write your own sharding logic or set up pg_shard.
Need aggregations? Gotta write your own logic. Will you do them on the fly? Use triggers? On demand?
Need to remove old data? Gotta set up a cron job. But wait, what if I want to age different series at different rates? Now you need a policy system. Sigh.
Not saying Postgres can't be the storage engine, but there's a lot of work to do on top of that.