Blog
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MariaDB 13.1 Feature in Focus: Validate Your Configuration Before Starting the Server
Have you ever modified a MariaDB configuration file, restarted the service, and immediately regretted it?
You wanted to change:
but accidentally wrote:
One missing letter.
That is enough to turn a perfectly healthy database server into a service that refuses to start.
And of course, this kind of mistake never happens during a quiet maintenance window when everybody is available.
It happens during an automated deployment.It happens during an upgrade.It happens on a remote server.Or it happens just before you […]
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MariaDB Hidden Gem: Online Schema Change without pt-osc
When people hear “online schema change” in the MySQL and MariaDB world, many immediately think about pt-online-schema-change. And for good reasons: for years, changing a large table in production was one of those tasks that could ruin your day.
Recently, I discovered that MariaDB includes a very useful hidden gem I completely missed: the ability to update a table schema without blocking concurrent DML statements for the duration of the schema change. [1]
As you probably already know, MariaDB Server […]
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MariaDB 13.1 Feature in Focus: BLOB, TEXT, JSON and GEOMETRY Support in the HEAP Engine
Some contributions improve MariaDB Server by adding new capabilities.
Some go further: they start from a concrete production problem with an existing feature, not a bug, but a design limitation, solve it upstream, and leave the whole ecosystem better off.
This is one of those contributions.
The platform team at Headout, a global platform that helps travelers discover and book curated real-life experiences, encountered a few inefficiencies in MariaDB Server around temporary tables and the HEAP engine. Instead of treating […]
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MariaDB Foundation Sea Lion Champions Nominees: Federico Razzoli
Interview with Federico Razzoli, nominated in the Community Leadership category.
The MariaDB Foundation Sea Lion Champions program celebrates the people and organizations who help make the MariaDB ecosystem stronger, more open, and more useful for everyone.
Behind every open-source project, there are contributors whose work takes many forms. Some write code. Some review, test, document, teach, organize, advocate, support users, build tools, or bring MariaDB into production environments where it proves its value every day. Together, they help MariaDB remain […]
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TAF 3.0 — Results Backend With Automated Performance Change Detection
TAF 3.0 introduces the new TAF Results Backend, a structured results database and parser pipeline that delivers fully automated performance change detection. This system uses a deterministic workload hash, schema‑driven baselines, and stored‑procedure‑driven comparison. No procedural comparison code. No special‑case logic. Everything is clean and automatic.
Workload Hash
Every test run gets a workload hash and parser builds it from:
This hash is the identity of the workload.Runs with the same hash belong to the same workload group.
Baseline
A […]
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MariaDB Server Plugins: disabled functions
During the last MariaDB Foundation Board Meeting (24 June 2026), Barry shared how it can be difficult to deploy an upgrade immediately and that they sometimes have to wait for one that fixes security bugs. Wait for the validation, wait for the fix, and the release. Even if the MariaDB engineers are doing incredible work, it might still not be fast enough for the security team.
That’s where Barry requested MariaDB implement a query-rewriter plugin, like the one in MySQL, […]
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MariaDB 13.1 Feature in Focus: DENY / Negative Grants
MariaDB 13.1 Preview is full of nice things.
Some are immediately visible to developers, like the new JSON operators. Some are very useful to DBAs, such as configuration validation. And some are about making security and access control easier to manage.
Today, let’s look at one of those: DENY, also known as negative grants.
Yes, negative grants.
It sounds a bit strange the first time you hear it, but the idea is very simple:
Sometimes it is easier to say […]
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Continuent joins MariaDB Foundation as a Silver Sponsor
MariaDB Foundation is pleased to welcome Continuent as a new Silver Sponsor.
Continuent develops solutions for organizations running business-critical applications on MariaDB and other MySQL-compatible databases. Its flagship product, Tungsten Cluster, helps organizations manage database availability, disaster recovery and distributed deployments across on-premises, cloud and hybrid environments.
The company has worked with open-source database technologies for more than two decades and brings extensive experience from demanding production environments across SaaS, financial services, telecommunications, e-commerce and other industries.
“Continuent has a […]