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Learning MySQL 5.7: Q & A

In this post I’ll answer questions I received in my Wednesday, July 19, 2017, webinar Learning MySQL 5.7!

First, thank you all who attended the webinar. The link to the slides and the webinar recording can be found here.

I received a number of interesting questions in the webinar that I’ve followed up with below.

Would there be a big difference on passing from 5.1 to 5.6 before going to 5.7 or, at this point, would it be roughly the same?

The biggest risk of jumping between versions, in this case 5.1 to 5.6, is reverting in case of problems. Rollbacks don’t happen often, but they do happen and you have to make …

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Upcoming HA Webinar Wed 6/21: Percona XtraDB Cluster, Galera Cluster, MySQL Group Replication

Join Percona’s MySQL Practice Manager Kenny Gryp and QA Engineer, Ramesh Sivaraman as they present a high availability webinar around Percona XtraDB Cluster, Galera Cluster, MySQL Group Replication on Wednesday, June 21, 2017 at 10:00 am PDT / 1:00 pm EDT (UTC-7).

Register Now

What are the implementation differences between Percona XtraDB Cluster 5.7, Galera Cluster 5.7 and MySQL Group Replication?

  • How do they work?
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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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