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  5. Radim Marek: The DISTINCT in your COUNT
Radim Marek: The DISTINCT in your COUNT
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Radim Marek: The DISTINCT in your COUNT

Here is a query that shows up in every analytics workload: SELECT count(DISTINCT user_id) FROM events; It looks like the cheapest possible thing: count the distinct users. On a machine with cores to spare you would expect Postgres to throw…

DatabasesPlanet PostgreSQLPublished: August 5, 2026
Databases
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DynamoDB now supports native vector search with single-digit millisecond latency at 99%+ recall. It is designed for any scale, even trillions of vectors and requires zero infrastructure management.

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DatabasesPlanet PostgreSQLAug 5, 2026Content in its original language: Portuguese

Avi Vallarapu: Tuning PostgreSQL HOT Updates - A HammerDB Benchmark

Vacuum is not a problem as we can help PostgreSQL avoid it with HOT updates. A HammerDB TPROC-C benchmark shows how tuning fillfactor for tables eliminates vacuum and reduces the bloat growth.

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Wellingtone Luvonga: Mastering PostgreSQL Configuration Management with CloudNativePG (CNPG)

If you are a traditional database administrator (DBA) transitioning to Kubernetes, the cloud-native ecosystem can feel like a series of personal attacks on your workflow. For years, your terminal was your home. If a query was running slow,…

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