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Displaying posts with tag: High Availability (reset)
Group Replication: Shipped Too Early

This blog post is my overview of Group Replication technology.

With Oracle clearly entering the “open source high availability solutions” arena with the release of their brand new Group Replication solution, I believe it is time to review the quality of the first GA (production ready) release.

TL;DR: Having examined the technology, it is my conclusion that Oracle seems to have released the GA version of Group Replication too early. While the product is definitely “working prototype” quality, the release seems rushed and unfinished. I found a significant number of issues, and I would personally not recommend it for production use.

It is obvious that Oracle is trying hard to ship technology to compete with …

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Group Replication @ FOSDEM 2017

Early February, we had the please to engage the MySQL community at FOSDEM. Thanks  everybody for a great event and an amazing MySQL Community dinner. We had a great  time.

We did some presentations, while at the MySQL devroom @ FOSDEM 2017, where we  showed some of the interesting, and very technical, aspects of our work on Group  Replication. …

“The king is dead, long live the king”: Our Paxos-based consensus

In this blog post, we will describe our Paxos-based solution, named eXtended COMmunications, or simply XCOM, which is a key component in the MySQL Group Replication.

XCOM is responsible for disseminating transactions to MySQL instances that are members in a group and for managing their membership.…

WAN Synchronous Clusters: Dealing with Latency Using Concurrency

In this blog, we’ll discuss how to use concurrency to help with WAN latency when using synchronous clusters.

WAN Latency Problem

Our customers often ask us for help or advice with WAN clustering problems. Historically, the usual solution for MySQL WAN deployments is having the primary site in one data center, and stand-by backup site in another data center (replicating from the primary asynchronously). These days, however, there is a huge desire to employ available synchronous replication solutions for MySQL. These solutions include things like Galera (i.e., Percona XtraDB Cluster) or the recently released MySQL Group Replication. This trend is attributable to the fact that these solutions are less problematic and provide more automatic fail over and fail back procedures. But it’s also because businesses want to write in both data centers simultaneously.

Unfortunately, WAN link reliability and latency makes …

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Percona Live Featured Tutorial with Frédéric Descamps — MySQL InnoDB Cluster & Group Replication in a Nutshell: Hands-On Tutorial

Welcome to another post in the series of Percona Live featured tutorial speakers blogs! In these blogs, we’ll highlight some of the tutorial speakers that will be at this year’s Percona Live conference. We’ll also discuss how these tutorials can help you improve your database environment. Make sure to read to the end to get a special Percona Live 2017 registration bonus!

In this Percona Live featured tutorial, we’ll meet Frédéric Descamps, MySQL Community Manager at Oracle. Frédéric is probably better known in the community as “LeFred” (Twitter: @lefred)! His tutorial is …

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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 Wednesday January 18, 2017: Lessons from Database Failures

Join Percona’s Chief Evangelist Colin Charles on Wednesday, January 18, 2017, at 7:00 am (PST) / 10:00 am (EST) (UTC-8) as he presents “Lessons from Database Failures.”

MySQL failures at scale can teach a great deal. MySQL failures can lead to a discussion about such topics as high availability (HA), geographical redundancy and automatic failover. In this webinar, Colin will present case study material (how automatic failover caused Github to go offline, why Facebook uses assisted failover rather than fully automated failover, and other scenarios) to look at how the MySQL world is making things better. One way, for example, is using …

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Percona XtraDB Cluster 5.7.16-27.19 is now available

Percona announces the release of Percona XtraDB Cluster 5.7.16-27.19 on December 15, 2016. Binaries are available from the downloads section or our software repositories.

Percona XtraDB Cluster 5.7.16-27.19 is now the current release, based on the following:

All Percona software is open-source and free.

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MySQL InnoDB Cluster – Setting up InnoDB Cluster on Windows

One of the most requested features for InnoDB cluster has been Windows support that we have now delivered as part of the InnoDB Cluster 5.7.17 Preview Release 2. This blog post will show you how to get your InnoDB cluster running on your MS Windows 10 64bit system.…

MySQL InnoDB Cluster – Navigating the Cluster

An important thing to know when managing an InnoDB cluster are the states that the cluster can be in, especially to know how to interpret the reported status of the cluster and specifically what to do to recover from failure various scenarios.…

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