Tag Archives: MariaDB
On November 6 2024 I presented a talk with the title: “The implementation of MariaDB parallel replication” at a local TeqHub meetup in Copenhagen.
In the talk I first presented how MariaDB replication works overall. I then described the central idea of optimistic parallel replication. Finally I described three details of the implementation: transaction scheduling; conflict detection; and efficient commit ordering. Here are the slides for the presentation.
I was very impressed by the level of the engagement of the audience. There were many questions that showed not only a deep interest in the subject, but also a deep understanding of the material I presented.
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Continue reading “Talk: The implementation of MariaDB parallel replication”
Update 2024-10-15: The event has been cancelled in favour of something better. Please see the end of this post.
On the 24th – 25th October 2024 we will be hosting our first-ever Hackathon as part of our larger MariaDB Foundation presence around Open Source India.
What is a Hackathon?
If you have never done one before, it is basically a fun and challenging technology event where the goal is to create new things. Attendees are split into small teams of 5-10 people. An open source project is chosen to create and/or improve upon, and you have a day to work on it (and night as well if you really want to).
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We’re here, we’re open source, and we have RDBMS based Vector Search for you! With the release of MariaDB 11.6 Vector Preview, the MariaDB Server ecosystem can finally check out how the long-awaited Vector Search functionality of MariaDB Server works. The effort is a result of collaborative work by employees of MariaDB plc, MariaDB Foundation and contributors, particularly from Amazon AWS.
Previously on “MariaDB Vector”
If you’re new to Vector, this is what’s happened so far:
- We blogged a number of times about our view of where Gen AI belongs in MariaDB Server
- We showed a first demo in February at our FOSDEM Fringe Event
- We launched a project page on mariadb.org/projects/mariadb-vector/, containing a number of videos
- We went on stage at Intel Vision in London, with AI everywhere
- We blogged about Amazon’s take on Vectors and MariaDB, in “MariaDB is soon a vector database, too“
The main point: MariaDB Vector is ready for experimentation
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On the 3rd of July, two weeks ago, I created a poll to ask about the future of feature development branches in MariaDB Server. Specifically, whether we should switch to a rolling model which is more familiar to users of services such as GitHub.
The votes we received gave a very clear result. Today I will share the conclusions we drew, as well as setting expectations for what will happen next.
Recap: what is this “main” branch all about?
In a rolling model, there is one main branch of the tree that all the feature commits go into (typically called “main”), and this is then forked when it is time to prepare a major release.
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As part of MariaDB’s efforts in Adoption, we have been working on support of MariaDB in open source projects.
The open source projects we have been looking at range from well known, ready to use projects like WordPress or MediaWiki (that Wikipedia runs on), to under-the-hood solutions like ORMs that connect software with databases for countless other open source and private projects.
MariaDB is the de facto standard that many projects and users are running. As MariaDB diverges, matures and develops on its own path from MySQL, especially in later versions, it’s not enough to shrug off compatibility questions with “MariaDB is a drop-in MySQL replacement – everybody knows that”.
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We normally announce releases and the end of life of releases, but today we are going to try something a little different, an announcement of “start of life”.
What does this mean?
The way we use GitHub is a little different to most projects. Instead of having a mainline and branching versions from that, MariaDB Server creates a new branch from the previous version. This is intended to happen shortly after the preview release of the previous version, but for various reasons it can come a little later. So by default, after the hypothetical version 11.7.0 is released, we will create the 11.8 branch in GitHub soon after.
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There are many forums in the past couple of years where I have talked about how non-code contributions are just as important to MariaDB Server and us at the MariaDB Foundation as the code contributions I typically help with. I’ve also highlighted in the past how Intel have provided some fantastic non-code contributions. They assist us by detecting performance issues on their new and future platforms, as well guidance in finding the root cause of these issues.
The outcome: Over a million NOPM in HammerDB
Today I want to discuss some of the performance improvements that Intel has helped with, which have led to MariaDB Server achieving 1 million NOPM (new orders per minute) in the HammerDB TPROC-C test.
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Continue reading “How Intel helps MariaDB become even faster”
Both MariaDB and MySQL have been around a long time now, and there is always a difficult balance between maintaining compatibility whilst also solving security issues that arise. With the latest bugfix releases of MariaDB, we had to break compatibility a little to improve security, but there are workarounds. We figured we should explain the reasons behind it and how to make things as painless as possible for you.
The Problem
The problem we were solving, and for various reasons we had to do it very quickly, is that it is possible to generate a malicious MariaDB dump file which could execute shell commands from the MariaDB client.
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