Tag - MySQL

Percona XtraDB Cluster 5.7.22-29.26 Is Now Available

Percona XtraDB Cluster 5.7

Percona announces the release of Percona XtraDB Cluster 5.7.22-29.26 (PXC) on June 29, 2018. Binaries are available from the downloads section or our software repositories.
Percona XtraDB Cluster 5.7.22-29.26 is now the current release, based on the following:

Percona Server for MySQL 5.7.22
Galera/Codership WSREP API Release 5.7.21
Galera Replication library 3.23

Deprecated
The following variables are deprecated starting from this […]

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Percona XtraDB Cluster 5.6.40-26.25 Is Now Available

Percona XtraDB Cluster 5.7

Percona announces the release of Percona XtraDB Cluster 5.6.40-26.25 (PXC) on June 20, 2018. Binaries are available from the downloads section or our software repositories.
Percona XtraDB Cluster 5.6.40-26.25 is now the current release, based on the following:

Percona Server for MySQL 5.6.40
Galera/Codership WSREP API Release 5.6.39
Galera Replication library 3.23

All Percona software is open-source and free.
New […]

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PXC loves firewalls (and System Admins loves iptables)

PXC and setting firewalls using iptables

Let them stay together.
In the last YEARS, I have seen quite often that users, when installing a product such as PXC, instead of spending five minutes to understand what to do just run
iptables -F  and save.
In short, they remove any rules for their firewall.
With this post, I want to show you how easy […]

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Webinar Wed, 5/23: Troubleshooting MySQL Concurrency Issues with Load Testing Tools

Benchmarking tools for troubleshooting

Please join Percona’s Principal Support Escalation Specialist, Sveta Smirnova, as she presents Troubleshooting MySQL Concurrency Issues with Load Testing Tools on Wednesday, May 23, 2018 at 11:00 AM PDT (UTC-7) / 2:00 PM EDT (UTC-4).
Register Now
 
Normally, we use benchmarking tools when we are developing applications. When applications are deployed, benchmarks tests are usually too late to […]

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Does the Version Number Matter?

ProxySQL

Yes, it does! In this blog post, I am going to share my recent experiences with ProxySQL and how important the database software version number can be.
Migration
I was working on a migration to Percona XtraDB Cluster (PXC) with ProxySQL, fortunately on a staging environment first so we could catch any issues (like this one).
We installed Percona […]

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MySQL 8.0 GA: Quality or Not?

MySQL 8.0 GA

What does Anton Ego – a fictional restaurant critic from the Pixar movie Ratatouille – have to do with MySQL 8.0 GA?
When it comes to being a software critic, a lot.
In many ways, the work of a software critic is easy. We risk very little and thrive on negative criticism, which is fun to […]

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Binlog and Replication Improvements in Percona Server for MySQL

Percona Server for MySQL 8.0

Due to continuous development and improvement, Percona Server for MySQL incorporates a number of improvements related to binary log handling and replication. This results in replication specifics, distinguishing it from MySQL Server.
Temporary tables and mixed logging format
Summary of the fix:
As soon as some statement involving temporary tables was met when using a mixed binlog format, MySQL switched to […]

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Performance Schema for MySQL Troubleshooting Webinar: Q & A

MySQL Troubleshooting

In this blog, I will provide answers to the Q & A for the Performance Schema for MySQL Troubleshooting webinar.
First, I want to thank everybody for attending my March 1, 2018, webinar. The recording and slides for the webinar are available here. Below is the list of your questions that I was unable to answer […]

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Using ProxySQL and VIRTUAL Columns to Solve ORM Issues

ProxySQL 1.4.14

In this blog post, we’ll look at using ProxySQL and VIRTUAL columns to solve object-relational mapping (ORM) issues.
There are a lot of web frameworks all around. Programmers and web designers are using them to develop and deploy any website and web application. Just to cite some of the most famous names: Drupal, Ruby on […]

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ANALYZE TABLE Is No Longer a Blocking Operation

analyze table

In this post, I’ll discuss the fix for lp:1704195 (migrated to PS-2503), which prevents
ANALYZE TABLE from blocking all subsequent queries on the same table.
In November 2017, Percona released a fix for lp:1704195 (migrated to PS-2503), created by Laurynas Biveinis. The fix, included with Percona Server for MySQL since versions 5.6.38-83.0 and 5.7.20-18, stops
ANALYZE TABLE from invalidating […]

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