Postgres finishes its updates sub-ms in a reasonably sized DB if optimized correctly. In terms of upper-scale (>1000 players in a somewhat real-world scenario),

Postgres finishes its updates sub-ms in a reasonably sized DB if optimized correctly. In terms of upper-scale (>1000 players in a somewhat real-world scenario), we're working out benchmarks to test that. Postgres is not slow by any stretch of the imagination, but it depends on how the schema is setup and what layers you have between the user and the DB, naturally any game developer will want to tweak the client+schema before going live. The layers between we manage to make it as minimal as possible, so that shouldn't be touched, if it's too slow for a reasonable use case, it means we have more optimization to do!