by Corrado Pandiani | Aug 11, 2022 | Insight for Developers, MySQL, Open Source, Percona Software
I have recently written an article for this blog presenting Window Functions for MongoDB 5.0. I used some public Italian COVID-19 data for a few real examples. Please have a look at it if you like. Then I thought I should provide the same even for a relational...
by Yura Sorokin | Aug 10, 2022 | Insight for DBAs, MySQL, Percona Software, Storage Engine
In Percona Server for MySQL 8.0.29-21, we added one more patch that helps us to build server code on macOS. To be precise here, we still could do this even before this patch but only partially. Now it is possible to build RocksDB Storage Engine as well. A word of...
by Vinicius Grippa | Aug 10, 2022 | Insight for DBAs, MySQL
This blog post will discuss the newest feature available in MySQL 8.0.30: dynamic redo log sizing. After the InnoDB buffer pool size, we can say that having a proper size for the redo logs is crucial for MySQL performance. There are numerous blog posts about how to...
by Chetan Shivashankar | Aug 3, 2022 | Cloud, MySQL, Percona Software
In part one and part two of this series, we introduced the different ways to manage MySQL configurations and precedence when using the Percona XtraDB Cluster (PXC) object and ConfigMap. In this post, we will see the precedence when secrets are used for MySQL...
by Chetan Shivashankar | Aug 1, 2022 | Cloud, MySQL, Percona Software
In part one of this series, we introduced the different ways to manage MySQL configurations. In this post, we will walk through different possibilities and the changes happening while modifying MySQL configurations with the operator. Percona Distribution for MySQL...
by Sveta Smirnova | Jul 29, 2022 | Benchmarks, Insight for DBAs, MySQL, Percona Software
In this blog, I will cover important aspects which you need to test when benchmarking replication setup. MySQL has great tools that could be used to test its performance. They include: sysbench – https://github.com/akopytov/sysbench BMK-kit –...
by David Stokes | Jul 28, 2022 | Insight for DBAs, MySQL, PostgreSQL
Episode 8 in the PostgreSQL for MySQL DBAs series covers materialized views. MySQL has had views for many years and they are very useful, but it has never had materialized views. Those who use materialized views appreciate their utility and here we will cover how they...
by David Stokes | Jul 27, 2022 | Insight for DBAs, MySQL
MySQL 8.0 is now over four years old and Oracle released the latest quarterly offering today with MySQL 8.0.30, which comes with lots of bug fixes and some interesting additions. This is my take on the release notes for those who do not have the time to wade through...
by Chetan Shivashankar | Jul 25, 2022 | Cloud, MySQL, Percona Software
Introduction/FAQ Question: I need to run a production-grade open source MySQL DB. Answer: Percona to the rescue! Percona XtraDB Cluster (PXC) is an open source enterprise MySQL solution that helps you to ensure data availability for your applications while improving...
by Fernando Laudares Camargos | Jul 21, 2022 | Insight for DBAs, MySQL, Percona Software
When we run a SELECT in a replica server and it returns a different result to the one we would have obtained had we queried the source server instead, due to changes in the dataset that have not yet been replicated or synchronized to the replica, we get what is known...
by Sveta Smirnova | Jul 21, 2022 | Insight for DBAs, MySQL
In this blog, I explain how to recover from a replication failure caused by a corrupted relay log file. MySQL replica stores data received from its source binary log in the relay log file. This file could be corrupted due to various reasons, mostly hardware failures....
by Marcelo Altmann | Jul 19, 2022 | Insight for DBAs, MySQL, Percona Software
Oracle’s MySQL 8.0.29 release extended the support for ALTER TABLE … ALGORITHM=INSTANT to 1) allow users to instantly add columns in any position of the table, and 2) instantly drop columns. As part of this work, the InnoDB redo log format has changed for all DML...
by David Stokes | Jul 18, 2022 | Insight for DBAs, MySQL, PostgreSQL
Experienced MySQL DBAs exploring PostgreSQL are often shocked to learn that they will need to vacuum their tables. This is not using a Hoover brand-like device or letting a Roomba-like robot loose on the server. Vacuuming is a necessary part of maintenance on a...
by David Stokes | Jul 15, 2022 | Insight for DBAs, MySQL, PostgreSQL
The differences between MySQL and PostgreSQL are often trivial but occasionally there are stark differences. A MySQL DBA wanting to optimize a query on a PostgreSQL server will hopefully have some experience with using EXPLAIN. For the uninitiated, the keyword...
by Peter Zaitsev | Jul 14, 2022 | Cloud, Insight for DBAs, MySQL, Percona Software
In this blog post, I will show how to install the MySQL-compatible Percona XtraDB Cluster (PXC) Operator on Minikube as well as perform some basic actions. I am by no means a Kubernetes expert and this blog post is the result of my explorations preparing for a local...
by Sveta Smirnova | Jul 13, 2022 | Monitoring, MySQL, Percona Software
In this blog, I will demonstrate how to use Percona Monitoring and Management (PMM) to find out the reason why the MySQL server is stalling. I will use only one typical situation for the MySQL server stall in this example, but the same dashboards, graphs, and...
by Yves Trudeau | Jul 13, 2022 | Insight for DBAs, MySQL
As a principal architect at Percona, one of my duties is to tune MySQL database servers for our customers. The tuning effort looks at every aspect of the database service like the operating system, the MySQL configuration, the schema, the queries, etc. We have...
by Fernando Mattera | Jul 8, 2022 | Insight for DBAs, MySQL, Percona Software
Hello folks, we all know the benefits of table compression in MySQL, with current technology, processing speed, and compression disks, and in most cases, it is a benefit. Now, what happens when that doesn’t happen? In this simple blog, I’m going to show...
by Natalia Marukovich | Jul 6, 2022 | Cloud, MongoDB, MySQL, Percona Software, PostgreSQL
There are several ways to manage storage in Percona Kubernetes Operators: Persistent Volume (PV), hostPath, ephemeral storage, etc. Using PVs, which are provisioned by the Operator through Storage Classes and Persistent Volume Claims, is the most popular choice for...
by Zsolt Parragi | Jul 6, 2022 | Cloud, MySQL, Percona Software
Percona Server for MySQL 8.0.28-20 introduces a new keyring component, component_keyring_kms, which allows using the AWS Key Management Service as a keyring. The component is also included in Percona XtraBackup 8.0.28, allowing backing up databases encrypted with this...
