Robert Haas

Built-in sharding is something that many people have wanted to see in PostgreSQL for a long time. It would be a gross exaggeration to say th...

What if PostgreSQL didn’t need VACUUM at all? This seems hard to imagine. After all, PostgreSQL uses multi-version concurrency control (MVC...

In a recent blog post , I talked about why every system that implements MVCC needs some scheme for removing old row versions, and how VACUUM...

Experienced PostgreSQL users and developers rattle off the terms “MVCC” and “VACUUM” as if everyone should know what they are and how they w...

Since I just committed the last pending patch to improve hash indexes to PostgreSQL 11, and since most of the improvements to hash indexes w...

The reaction to the new table partitioning feature in PostgreSQL 10 has been overwhelmingly positive, but a number of people have already as...

In a talk which I gave at PGCONF.IN and, in a shorter version, at PGCONF.US, I had a few slides on who contributes to PostgreSQL development...