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  5. Group Replication Beyond a Single Cluster: DC-DR with Percona (PS MySQL) Operator
Group Replication Beyond a Single Cluster: DC-DR with Percona (PS MySQL) Operator
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Group Replication Beyond a Single Cluster: DC-DR with Percona (PS MySQL) Operator

A while ago, we discussed the cross-site replication feature of the Percona PXC operator. Recently, a similar cross-site replication feature was introduced in the Percona (PS MySQL) operator v1.2.0, a topology based on Group…

DatabasesPercona Database BlogPublished: September 17, 2026
Databases
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DatabasesPercona Database BlogSep 17, 2026

Too many GCache Page Files in MySQL Data Directory

Learn why PXC accumulates thousands of gcache.page.* files, how frozen GCache purging causes disk growth, and how to safely recover and rejoin using IST. The post Too many GCache Page Files in MySQL Data Directory appeared first on Percona.

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Databases
DatabasesPlanet PostgreSQLSep 17, 2026

Radim Marek: Row locks at the page level

In PostgreSQL, every tuple starts with 23-byte header, and the first eight bytes are two transaction IDs. t_xmin for the transaction that created the row and t_xmax for the one that deleted or updated it. That is the visibility story…

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Databases
DatabasesPlanet PostgreSQLSep 17, 2026Content in its original language: Portuguese

Christophe Pettus: All Your GUCs in a Row: max_logical_replication_workers

When a logical replication worker pool runs dry, subscriptions don't fail—they just stop making progress, filling your logs with warnings every five seconds…

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