For a very long time – since when multiple CPU cores were commonly available – I dreamed about MySQL having the ability to execute queries in parallel. This feature was lacking from MySQL, and I wrote a lots of posts on how to emulate parallel queries in MySQL using different methods: from simple parallel […]
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In this blog post, we will walk through the internals of the election process in MongoDB®, following on from a previous post on the internals of the replica set. You can read Part 1 here.
For this post, I am refer to the same configurations we discussed before.
Elections: As the term suggests, in MongoDB there is a […]
Please join Percona’s Senior Technical Manager, Alkin Tezuysal, as he presents Databases Gone Serverless? on Thursday, January 24th, at 6:00 AM PDT (UTC-7) / 9:00 AM EDT (UTC-4).
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Serverless computing is becoming more popular with developers. For instance, it enables them to build and run applications without needing to operate and manage servers. This talk […]
A common challenge with continuously deployed applications is that new and modified SQL queries are constantly being introduced to the application. Many companies choose to use a database monitoring system (such as PMM) to identify those slow queries. But identifying slow queries is only the start – what about actually optimizing them?
In this post […]
We had a great response to our call for papers, thank you! However great we believe having the conference in Austin, TX will be, moving to a new area of the US is still a leap of faith until we see the numbers. So we’re thankful that so many of you continue to support […]
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Percona announces the release of Percona XtraDB Cluster Operator 0.2.0 early access.
The Percona XtraDB Cluster Operator simplifies the deployment and management of Percona XtraDB Cluster in a Kubernetes or OpenShift environment. It extends the Kubernetes API with a new custom resource for deploying, configuring and managing the application through the whole life cycle.
Note: PerconaLabs and […]
Percona is glad to announce the release of Percona XtraBackup 2.4.13 on January 18, 2018. You can download it from our download site and apt and yum repositories.
Percona XtraBackup enables MySQL backups without blocking user queries, making it ideal for companies with large data sets and mission-critical applications that cannot tolerate long periods of downtime. […]
Some time ago I wrote a script to manage asynchronous replication links between Percona XtraDB clusters. The original post can be found here. The script worked well with Percona XtraDB Cluster but it wasn’t working well with MariaDB®. Finally, the replication manager works with MariaDB.
First, let’s review the purpose of the script. Managing replication […]
Percona announces the release of Percona Server for MySQL 8.0.13-4 on January 17, 2019 (downloads are available here and from the Percona Software Repositories). This release contains a fix for a critical bug that prevented Percona Server for MySQL 5.7.24-26 from being upgraded to version 8.0.13-3 if there are more than around 1000 tables, or if the maximum allocated InnoDB table ID […]
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Parallel query execution is my favorite, non-existent, feature in MySQL. In all versions of MySQL – at least at the time of writing – when you run a single query it will run in one thread, effectively utilizing one CPU core only. Multiple queries run at the same time will be using different threads and […]
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