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The Percona Database Performance Blog

Technical guides, deep dives, and perspectives across MySQL, PostgreSQL, MongoDB, Valkey, Redis, and more.

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August 31, 2026

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Ivan Groenewold

Rotating Expiring X.509 Certificates in Percona Server for MongoDB with Minimal Service Interruption

Expired TLS certificates can prevent new client connections and, when X.509 is used for Percona Server for MongoDB internal authentication, also preve...

Benchmarking vector indexes

August 27, 2026

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Bogdan Degtyariov

Performance Progression of Percona Server for MySQL 8.4

August 26, 2026

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Robert Bernier

Navigating the Walled Gardens of PostgreSQL: Hidden Risks of Postgres Vendor Lock-in

Replication Lag on AWS FSx: The Hidden EC2 Single-Flow Bandwidth Limit

Software Bill of Materials in Percona Server for MongoDB

Security Advisory: Privileged ClickHouse access through the Grafana data source in PMM

Stop guessing at gcache: inspect Galera/PXC write sets with gcache-inspector

August 17, 2026

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Agustín Gallego

Percona University Comes to Uruguay

Replicating from InnoDB into a DuckDB storage engine

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