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MongoDB 4.4 EOL with 5.0 Not Far Behind
February 2024 marked the end of life (EOL) of MongoDB 4.4.Another year, another EOL, is a fitting summary. Time goes by fast, and looking from this perspective, 5.0 is one we will soon also say goodbye...
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How to Replicate and Rename a Database in MariaDB
MySQL/MariaDB replication filter is an important feature when we need to replicate only certain databases or tables. Having this configuration option change dynamically is really convenient, but in...
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How to Set and Tune Autovacuum Settings in PostgreSQL to Avoid Performance...
This blog was originally published in June 2022 and was updated in April 2024.PostgreSQL’s built-in autovacuum – the housekeeper – is improving, version after version. It is becoming more capable while...
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JSON_TABLE() Will Be in PostgreSQL 17
JSON_TABLE() will be in PostgreSQL 17! It almost made it two years ago but was yanked away at the last minute. We will get it shortly when PostgreSQL 17 is officially released this year! Please see...
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Partially Rolling Back a Transaction in MySQL or PostgreSQL
This short write-up focuses on a different transaction control behavior of databases. Though this is not unusual, I decided to write an article on rolling back transactions to a particular point. I...
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Why SELECT COUNT(*) FROM TABLE Is Sometimes Very Slow in MySQL or MariaDB
If you have enough experience with MySQL, it is very possible that you stumbled upon an unusually slow SELECT COUNT(*) FROM TABLE; query execution, at least occasionally.Recently, I had a chance to...
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A Guide to Better Understanding MySQL Charset Levels
We usually receive and see some questions regarding the charset levels in MySQL, especially after the deprecation of utf8mb3 and the new default uf8mb4. If you understand how the charset works on MySQL...
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Percona Stands Firmly on the Side of Open Source
Percona is proud to formally state our support for the Valkey project and its community. We will soon offer commercial support for the open source Redis alternative, Valkey.The world of open source is...
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How to Find Duplicate, Unused, and Invisible Indexes in MySQL
This blog was originally published in January 2023 and was updated in April 2024.MySQL index is a data structure used to optimize the performance of database queries at the expense of additional writes...
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MySQL 101: How to Find and Tune a Slow MySQL Query
This blog was originally published in June 2020 and was updated in April 2024.One of the most common support tickets we get at Percona is the infamous “database is running slower” ticket. While this...
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Switch PostgreSQL Environments Across AWS, GCP, and k3d Using Kubernetes...
This article explains how to install the Percona Distribution for PostgreSQL on Kubernetes using “context”. We will show you how to set up this distribution on Kubernetes clusters in AWS, Google Cloud,...
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How to Improve Database Performance: The Ultimate Guide
Welcome to the ultimate guide on how to boost your database performance! We’ve designed it to help you understand and improve the performance of your databases, regardless of your level of experience...
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Should You Deploy Your Databases on Kubernetes? And What Makes StatefulSet...
Why do cloud-native databases matter?Kubernetes makes it easier to run applications. It’s like having a magic wand for managing everything from small tasks to significant operations. However, despite...
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Did MyDumper LIKE Triggers?
Yes, but now it likes them more, and here is why.IntroUsing the LIKE clause to filter triggers or views from a specific table is common. However, it can play a trick on you, especially if you don’t get...
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PostgreSQL Database Security Best Practices
When data is everything, the sophistication of cybersecurity threats casts a shadow over the world of data security, including for those using PostgreSQL as their database of choice. Although renowned...
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Why MariaDB Is “Better” Than MySQL
Apples or oranges?Tea or coffee?Books or eBooks?Each of these comparisons has very similar features and serves many of the same purposes, but in the end, they are different choices people make. Do you...
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Bringing Percona Experts to a City Near You
Percona.connect, a series of free events hosted by Percona database performance experts, is coming to a city near you! This amazing learning opportunity spans six cities — across two continents — and...
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Benchmarking MongoDB Performance on Kubernetes
Cloud-native databases are becoming the norm, and containerized databases are a common trend (see the report from Dynatrace and Figure 1). Kubernetes—the de facto standard for platform engineers—and...
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Trying out the PostgreSQL pg_tde Tech Preview Release
The tech preview version of the pg_tde extension for PostgreSQL 16 was released on March 28th, with many improvements compared to our previous MVP release. In addition to lots of bug fixes, the new...
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Redis, Valkey, and Percona’s Ongoing Support of Open Source
For me, the Redis story starts with… Memcached. Back in the early 2000s, “Web 2.0” was being built following the aftermath of the dot-com crash. The open source LAMP...
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