In my recent series on Scoped Vector Search, we looked at the query patterns that make vector search a first-class citizen in MySQL. While the logic for those searches is now established, the infrastructure supporting them requires constant attention as the MySQL ecosystem moves toward its new release model.

Today, I’m announcing MyVector v1.26.3. This is a foundational release focused on environment compatibility and CI/CD robustness.

What’s in v1.26.3?

This release ensures that MyVector remains stable and buildable across the shifting landscape of MySQL Innovation and LTS releases.

• MySQL 8.4 & 9.6 Compatibility: We’ve updated the component sources and build logic to align with the headers and …

As a follow-up to our previous blog post, “Where can you find MySQL during January to April 2026” (published at the end of January 2026), we would like to share an update. With the dynamic nature of event planning, we have slightly adjusted our plans—both for in-person conferences and for online sessions—so you always have […]

When a replica fails due to corruption or drift, the standard solution is to rebuild it from a fresh copy of the master when pt-table-sync is not an option. Traditionally, when we need to build a new replica, we use a physical backup for speed, but there are some cases where you still need logical backups. For instance, when you migrate to a specific vendor (i.e.: MariaDB to MySQL) or storage engines (in the past MyISAM to InnoDB and nowadays from InnoDB to RocksDB), upgrade to a new database version or move to a cloud based solution. This is where a logical backup shines, offering portability and simplicity, but only if it can be performed quickly. MyDumper emerges as the essential, modern solution, delivering the best of both worlds: the cross-platform, cross-version flexibility of a logical dump combined with the parallel, multi-threaded speed previously reserved for physical methods, making it the clear choice for rapidly rebuilding a consistent …

From Concepts to Production: Real-World Patterns, Query Plans, and What’s Next

In Part I, we introduced scoped vector search in MySQL using the MyVector plugin, focusing on how semantic similarity and SQL filtering work together.

In Part II, we explored schema design, embedding strategies, HNSW indexing, hybrid queries, and tuning — and closed with a promise to show real-world usage and execution behavior.

This final part completes the series.

Semantic Search with Explicit Scope

In real systems, semantic search is almost never global. Results must be filtered by tenant, user, or domain before ranking by …

I have a curse. My curse is curiosity. 

Here in Percona I found one person that is very “dangerous” for me, and he and I also share the same first name, well almost, Marcos Albe. 

Marcos is a smart guy with a lot of ideas, and he is not shy to share them. One day we were talking about sysbench, and he mentioned to me: you know it would be nice to have a test for joins in sysbench. I wonder why we don’t have it; it will be so useful to identify regressions in that area.
You see where this is going right? He put that in my mind, luckily I was busy with other stuff and I forgot. Until one day. That day I had to take a more in-depth look at some claims about joins performance regressions. In that moment Marcos voice comes back as an echo resonating in my mind … it would be useful to identify regressions… 

That’s it. Ok let’s do it, let’s build this joins test and see how …

1. Table(s) structure
2. The Tests
3. How to use it
4. How to modify it
   1. Method 1. 
   2. …

{index}

"What happens when you run a 10 TB MySQL database on Kubernetes?" 

That's the question many of our customers and users asked and honestly, we were extremely curious ourselves.

So, we ditched the weekend plans, rolled up our sleeves, and jumped down the rabbit hole. What we found was far more challenging (and perhaps a bit more "psychedelic") than expected. We spent days rigorously testing the Percona Operator for PXC at massive scale. 

This blog post distills all our findings into the most critical, actionable advice you need to ensure your high-scale environment not only survives but operates reliably.

If you are lazy and prefer to watch a video, here is the presentation I did at the MySQL Belgian days in January 2026. …

"What happens when you run a 10 TB MySQL database on Kubernetes?" 

That's the question many of our customers and users asked and honestly, we were extremely curious ourselves.

So, we ditched the weekend plans, rolled up our sleeves, and jumped down the rabbit hole. What we found was far more challenging (and perhaps a bit more "psychedelic") than expected. We spent days rigorously testing the Percona Operator for PXC at massive scale. 

This blog post distills all our findings into the most critical, actionable advice you need to ensure your high-scale environment not only survives but operates reliably.

If you are lazy and prefer to watch a video, here is the presentation I did at the MySQL Belgian days in January 2026.

First of …

In this guide, we explain 150+ SQL commands in simple words, covering everything from basic queries to advanced functions for 2026. We cover almost every SQL command that exists in one single place, so you never have to go search for anything anywhere else. If you master these 150 commands, you will become an SQL […]

Who has never encountered a customer who, for all sorts of reasons (valid or not), was unable to update an application and therefore could no longer connect to the latest versions of MySQL? Or worse still, data that is shared between two applications, one of which absolutely must use the latest version of MySQL and […]