On October 3rd ProxySQL will have it’s very first technology day. They have chosen the lovely city of Ghent, Belgium, my home town, as the place to be. For those attending Percona Live Europe in Amsterdam, this is a great opportunity to extend your stay for a bit and take a two-hour train ride from the Percona Live venue at Amsterdam airport to Ghent where you can get some additional ProxySQL-specific content.

The ProxySQL team has selected a few experienced speakers to come and talk about their product. Vlad Fedorkov from ProxySQL LLC will have two sessions. The first one will be about High Performance MySQL and the second one will be about traffic management and performance troubleshooting. Oracle’s MySQL Community Manager, Frederic Descamps, will talk about using ProxySQL with InnoDB Cluster (Group Replication) and Percona’s Marco Tusa …

ProxySQL Technology Day in Ghent, Belgium

As a part of the ProxySQL team I am happy to announce my trip to Ghent to ProxySQL Technology Day. With great pleasure, I will join the experts from Oracle, Percona, and Pythian to talk about various things that ProxySQL can do for a user. We are going to meet at 5PM at Ghent’s Co.Station co-working on Thursday, October 3rd to walk through key features that ProxySQL is adding to MySQL ecosystem. Join me and others for five talks and a round table about building MySQL infrastructure to serve hundreds of thousands of queries per second.

What am I going to talk about?

In my 30 minutes “Introduction to High …

ProxySQL 2.0.6, released by ProxySQL, is now available for download in the Percona Repository along with Percona’s proxysql-admin tool.

ProxySQL is a high-performance proxy, currently for MySQL and database servers in the MySQL ecosystem (like Percona Server for MySQL and MariaDB). It acts as an intermediary for client requests seeking resources from the database. René Cannaò created ProxySQL for DBAs as a means of solving complex replication topology issues.

This release includes ProxySQL 2.0.6 which introduces many new features and enhancements and also …

Partnering to participate knowledge sharing for the community of Database Administrators.

In continuation to the community contribution with knowledge gained out of experience and networking, Mydbops IT Solutions, conducted its 4th Database Meetup on Saturday, 3rd of August, 2019. Here was the first time, that we had changed our venue. With the like-minded sponsor in M/s.Zenefits Technologies India Pvt. Ltd. They played a role of a perfect host for all of us as attendees. Their venue was a perfectly equipped to suit the knowledge sharing exercise.

Key note by Mr.Ramesh Aithal, Head of Engineering at Zenefits was build on statistics, of how the Industry is taking shape and the galore of opportunities in the coming days. The attendees from multiple companies were a great …

ProxySQL 2.0.5, released by ProxySQL, is now available for download in the Percona Repository along with Percona’s proxysql-admin tool.

ProxySQL is a high-performance proxy, currently for MySQL and database servers in the MySQL ecosystem (like Percona Server for MySQL and MariaDB). It acts as an intermediary for client requests seeking resources from the database. René Cannaò created ProxySQL for DBAs as a means of solving complex replication topology issues.

This release includes ProxySQL 2.0.5 which fixes many bugs and introduces a number of features …

Overview

While working on a MySQL Galera cluster with ProxySQL, I was in the process of testing traffic going to the MySQL nodes by using the @@hostname command to ensure which MySQL host behind the proxy the query ran on. This was important as my client is using query rules to route traffic according to the rule to either the master or the slave.  But to my surprise, I didn’t always get the result that I was expecting.  This is where ProxySQL multiplexing comes into play.

Scenario

In my scenario, I was on a test server connecting to ProxySQL which was then routing my queries to the MySQL Galera nodes.  I would connect into ProxySQL using the MySQL client.

Important note: When testing query routing with ProxySQL using comments and the MySQL client, you have to use the “-c” command line option in order for the comment to not be stripped away when running queries.  You …

Percona is glad to announce the release of Percona XtraDB Cluster 5.7.26-31.37 on June 26, 2019. Binaries are available from the downloads section or from our software repositories.

Percona XtraDB Cluster 5.7.26-31.37 is now the current release, based on the following:

• Percona Server for MySQL 5.7.26-29
• Codership WSREP API release 5.7.25
• Codership Galera library 3.26

All Percona software is open-source and free.

Bugs Fixed

• PXC-2480: In some …

Percona is glad to announce the release of Percona XtraDB Cluster 5.6.44-28.34 on June 19, 2019. Binaries are available from the downloads section or from our software repositories.

Percona XtraDB Cluster 5.6.44-28.34 is now the current release, based on the following:

• Percona Server 5.6.44-86.0
• Codership WSREP API release 5.6.43
• Codership Galera library 3.26

All Percona software is open-source and free.

Bugs Fixed

• PXC-2480: In some …

ProxySQL is a great tool. It’s one of the most recommended technologies in our Open Source Database practice.

Many of our clients are running it or are migrating towards it, but we’ve seen that it is pretty CPU-intensive. We’ve also seen strange behavior in the connection handling when reaching the CPU saturation point.

At this point, we noticed that the frontend_connections counter in the stats_mysql_users table was not decreasing even after the connections were no longer present at the network level. This counter is used to check the max_connections value in the mysql_users configuration table, causing frontend connections to receive a “Too many connections” error. So we determined that the key element here is to scale it properly. Obviously, all the major cloud providers can help us here as they all have features like auto-scaling groups.

Jervin Real of Percona has recently …

ProxySQL 2.0.4, released by ProxySQL, is now available for download in the Percona Repository along with Percona’s proxysql-admin tool.

ProxySQL is a high-performance proxy, currently for MySQL and database servers in the MySQL ecosystem (like Percona Server for MySQL and MariaDB). It acts as an intermediary for client requests seeking resources from the database. René Cannaò created ProxySQL for DBAs as a means of solving complex replication topology issues.

This release includes ProxySQL 2.0.4 which fixes many bugs and introduces a number of features …