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Date of release: 19 August 2026 Severity: High Affected product: PMM Impacted versions: 3.9.0 and below Summary Percona has recently been made aware of a security vulnerability affecting PMM. We take the security of our products and the protection of our customers’ data with the utmost seriousness. This advisory describes the vulnerability, the immediate steps … Continued The post Security…
The common practice is to size the Galera Cache based on write volume measured during peak load, but often it is more of a guesswork. The writeset cache capacity planning is crucial to shorten the maintenance time and avoid long state transfers while the cluster runs with reduced compute power. Now, if you could understand … Continued The post Stop guessing at gcache: inspect Galera/PXC write sets…
Percona University is coming to Montevideo. On September 23rd, 2026, we’re getting together for a full day of technical talks on open source software, and you are invited! If you work or study with open source software in Uruguay, this one is for you. It’s a whole day of learning, with the people who build … Continued The post Percona University Comes to Uruguay appeared first on Percona .
Our first post showed MySQL 9.7 with one change: mark a table ENGINE=DuckDB and its analytical queries run in DuckDB instead of InnoDB. The question we kept getting after that was about replication. Can you keep a normal InnoDB primary for the writes, and run a replica where the big tables are ENGINE=DuckDB? Then the … Continued The post Replicating from InnoDB into a DuckDB storage engine…
We’re happy to announce that Percona Server for MongoDB (PSMDB) 8.0.28-12 extends platform support to RHEL 10 and its derivatives (Oracle Linux 10, Rocky Linux 10, AlmaLinux 10, and other RHEL-compatible distributions) for both x86_64 and ARM (aarch64) architectures. This release also adds support for Debian 13 “Trixie” on x86_64 and ARM64. We’ll continue to … Continued The post Percona for…
Percona Search for MongoDB is Percona’s downstream distribution of mongot, the search engine that provides MongoDB’s full-text and vector search capabilities. With this addition, you can power your applications with AI and advanced search techniques – anywhere, and without vendor lock-in. It’s the same search engine that powers MongoDB Atlas Search. Percona Search for MongoDB … Continued The post…
We ran DuckDB MySQL storage engine at scale factor 500. It is around 500 GB of raw TPC-H, three billion lineitem rows on an 80-core server with 187 GB of RAM. Three engines on the same box: InnoDB, our MySQL+DuckDB engine, and plain DuckDB as the reference. Here is what came out. InnoDB finished 18 … Continued The post The DuckDB MySQL engine at 500 GB appeared first on Percona .
The diagnostic data MongoDB Atlas doesn’t hand you Every MongoDB server keeps a flight recorder. It’s called FTDC, Full Time Diagnostic Data Capture, and it writes about 5,700 metrics every second into a folder called diagnostic.data, right next to your log. It’s delta-encoded and compressed so aggressively that days of history fit in a few … Continued The post The diagnostic data MongoDB Atlas…
1. What it is about This investigation began as a performance comparison for different memory allocators. However, during benchmarking, I discovered unexpected effects deserving a more detailed explanation. I hope you find these findings both interesting and useful. Imagine you need to set up a MySQL database server. Every detail is planned: the operating system, … Continued The post Stored…
Percona Server for MongoDB 8.3 is available today as a Technical Preview. It is not for production. It is for your lab, your staging cluster, and your benchmark harness – and for sharing with us what works and what does not. Especially if this version is your segue to leverage upcoming full-text and vector search … Continued The post Percona Server for MongoDB 8.3 Technical Preview Is Now…
