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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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April 23, 2026
Scaling Your Cache: A Step-by-Step Guide to Setting Up Valkey Replication
In the recent open-source data landscape, Valkey has emerged as a prominent player. Born as a Linux Foundation-backed, fully open-source fork of Redis...
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April 22, 2026
Percona Live 2026 is Back in the Bay Area — Here’s Why You Don’t Want to Miss It
We’re thrilled to welcome the open source database community back in person for Percona Live 2026, taking place May 27–29 in the Bay Area. After the e...
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April 21, 2026
Impacts of updates in open-source databases
We recently looked at how various open-source database engines maintain their secondary indexes (in a previous analysis) and found significant differe...
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April 21, 2026
Percona Operator for MySQL 1.1.0: PITR, Incremental Backups, and Compression
The latest release of the Percona Operator for MySQL, 1.1.0, is here. It brings point-in-time recovery, incremental backups, zstd backup compression, ...
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April 21, 2026
PostgreSQL Performance: Is Your Query Slow or Just Long-Running?
Introduction: Recently I was having a conversation with a DB Enthusiast, and he mentioned that when he was a fresher, he tuned an ETL/reporting query ...
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April 20, 2026
Deploying Cross-Site Replication in Percona Operator for MySQL (PXC)
Having a separate DR cluster for production databases is a modern day requirement or necessity for tech and other related businesses that rely heavily...
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April 17, 2026
MariaDB’s Snapshot Isolation: A Fix That Breaks More Than It Fixes
Jepsen’s analysis of MySQL 8.0.34 walked through a set of concurrency and isolation anomalies in InnoDB. MariaDB, which inherits the same codeba...
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April 16, 2026
Why A Goat?
New Brand. Same Independence. If you read today’s announcement, you know Percona has a lot to say about what’s broken in modern data infra...
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April 13, 2026
Pipelining and Transactions in Redis and Valkey
Pipelining and transactions are two important features in Redis and Valkey. Both involve sending multiple commands together. But they solve completely...
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April 13, 2026
MongoDB Query Plan Cache Explained: Performance, Pitfalls, and Re-Planning
When MongoDB receives a query, it performs the following steps: Evaluate the available indexes that could be used. Generate and test multiple executio...
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