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How We Made Percona XtraDB Cluster Scale

In this blog post, we’ll look at the actions and efforts Percona experts took to scale Percona XtraDB Cluster.

Introduction

When we first started analyzing Percona XtraDB Cluster performance, it was pretty bad. We would see contention even with 16 threads. Performance was even worse with sync binlog=1, although the same pattern was observed even with the binary log disabled. The effect was not only limited to OLTP workloads, as even other workloads (like update-key/non-key) were also affected in a wider sense than OLTP.

That’s when we started analyzing the contention issues and found multiple problems. We will discuss all these problems and the solutions we adapted. But …

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Percona XtraDB Cluster 5.6.35-26.20-3 is now available

Percona announces the release of Percona XtraDB Cluster 5.6.35-26.20-3 on April 13, 2017. Binaries are available from the downloads section or our software repositories.

Percona XtraDB Cluster 5.6.35-26.20-3 is now the current release, based on the following:

All Percona software is open-source and free.

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Percona XtraDB Cluster 5.7.17-29.20 is now available

Percona announces the release of Percona XtraDB Cluster 5.7.17-29.20 on April 19, 2017. Binaries are available from the downloads section or our software repositories.

NOTE: You can also run Docker containers from the images in the Docker Hub repository.

Percona XtraDB Cluster 5.7.17-29.20 is now the current release, based on the following:

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Setup ProxySQL for High Availability (not a Single Point of Failure)

In this blog post, we’ll look at how to set up ProxySQL for high availability.

During the last few months, we’ve had a lot of opportunities to present and discuss a very powerful tool that will become more and more used in the architectures supporting MySQL: ProxySQL.

ProxySQL is becoming more flexible, solid, performant and used every day (http://www.proxysql.com/ and recent http://www.proxysql.com/compare). You can use ProxySQL for high availability.

The tool is a winner when compared to similar ones, and we should all have a clear(er) idea of how to integrate it in our architectures in order to achieve the best results.

The first thing to keep in mind is that ProxySQL doesn’t natively support any high availability solution. We can setup a cluster of …

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Webinar Q/A: MySQL High Availability with Percona XtraDB Cluster 5.7

In this blog I will provide answers to the questions and queries that some of you have raised during the webinar on Nov 17th.

I would like to say thank you to all of the audience who attended the talk on November 17, 2016. You can also check the recording and slides here.

Q. How is storage distribution done across the node?

A. Each node has independent storage and other resources. There is no sharing of resource. Only the write-sets are replicated.

Q. If write-set propagation fails in some manner is there any retry mechanism?

A. write-set are written to …

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Webinar Thursday, November 17: MySQL High Availability with Percona XtraDB Cluster 5.7

Join Percona’s Percona XtraDB Cluster Lead Software Engineer Krunal Bauskar for a webinar on Thursday, November 17, 2016, at 7:30 am PST on MySQL High Availability with Percona XtraDB Cluster 5.7.

Percona XtraDB Cluster 5.7 is our brand new MySQL 5.7 compatible Galera-based high availability (HA) solution. Whether you’re new to MySQL clustering technology, or experienced with Galera-based replication, this tutorial provides great insights into working with the software, …

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Percona XtraDB Cluster 5.6.32-25.17 is now available

Percona announces the new release of Percona XtraDB Cluster 5.6.32-25.17 on October 4, 2016. Binaries are available from the downloads area or our software repositories.

Percona XtraDB Cluster 5.6.32-25.17 is now the current release, based on the following:

  • Percona Server 5.6.32-78.1
  • Galera Replication library 3.17
  • Codership wsrep API version 25

Bugs Fixed:

  • Fixed DONOR
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Percona XtraDB Cluster 5.6.30-25.16.2 is now available (CVE-2016-6662 fix)

Percona  announces the new release of Percona XtraDB Cluster 5.6 on September 15, 2016. Binaries are available from the downloads area or our software repositories.

Percona XtraDB Cluster 5.6.30-25.16.2 is now the current release, based on the following:

  • Percona Server 5.6.30-76.3
  • Galera Replication library 3.16
  • Codership wsrep API version 25

This release provides a …

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AWS Aurora Benchmarking part 2

Some time ago, I published the article on AWS Aurora Benchmarking (AWS Aurora Benchmarking – Blast or Splash?), in which I analyzed the behavior of different solutions using synchronous replication in AWS environment. This blog follows up with some of the comments and suggestions I received regarding that post from the community and Amazon engineers.

I decided to perform another round of tests, keeping in mind comments and suggestions received.

I presented some of the results during the Percona conference in Santa Clara last April 2016. The following is the transposition that presentation, with more details.

Not interested in the preliminary descriptions? Go to the results section

Why new tests?

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Better high availability: MySQL and Percona XtraDB Cluster with good application design

High Availability

Have you ever wondered if your application should be able to work in read-only mode? How important is that question?

MySQL seems to be the most popular database solution for web-based products. Most typical Internet application workloads consist of many reads, with usually few writes. There are exceptions of course – MMO games for instance – but often the number of reads is much bigger then writes. So when your database infrastructure looses its ability to accept writes, either because traditional MySQL replication topology lost its master or Galera cluster lost its quorum, why would you want to the application to declare total …

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