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Optimizing MySQL for Zabbix

 | November 14, 2014 |  Posted In: High-availability, InnoDB, MySQL

This blog post was inspired by my visit at the annual Zabbix Conference in Riga, Latvia this year, where I gave a couple of talks on MySQL and beyond. It was a two day single-track event with some 200 participants, a number of interesting talks on Zabbix (and related technologies) and really well-organized evening activities. […]

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MySQL ring replication: Why it is a bad option

 | October 7, 2014 |  Posted In: High-availability, Insight for DBAs, MySQL, Percona MySQL Consulting

I’ve recently worked with customers using replication rings with 4+ servers; several servers accepting writes. The idea behind this design is always the same: by having multiple servers, you get high availability and by having multiple writer nodes, you get write scalability. Alas, this is simply not true. Here is why. High Availability Having several […]

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High Availability with mysqlnd_ms on Percona XtraDB Cluster

 | July 16, 2014 |  Posted In: High-availability, Insight for Developers, MySQL, Percona XtraDB Cluster

This is the second part of my series on High Availability with mysqlnd_ms. In my first post, “Simple MySQL Master HA with mysqlnd_ms,” I showed a simple HA solution using asynchronous MySQL replication. This time we will see how to leverage an all-primary cluster where you can write to all nodes. In this post I used […]

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High Availability with MySQL Fabric: Part II

and  | May 30, 2014 |  Posted In: High-availability, Insight for DBAs, MySQL

This is the third post in our MySQL Fabric series. If you missed the previous two, we started with an overall introduction, and then a discussion of MySQL Fabric’s high-availability (HA) features. MySQL Fabric was RC when we started this series, but it went GA recently. You can read the press release here, and see this blog post from Oracle’s Mats […]

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MySQL High Availability With Percona XtraDB Cluster (Percona MySQL Training)

 | May 21, 2014 |  Posted In: High-availability, MySQL, Percona XtraDB Cluster, XtraDB Cluster

I’ve had the opportunity to train lots of people on Percona XtraDB Cluster (PXC) over the last few years the product has existed.  This has taken the form of phone calls, emails, blog posts, webinars, and consulting engagements. This doesn’t count all the time I’ve spent grilling Codership on how things actually work.  But it […]

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Errant transactions: Major hurdle for GTID-based failover in MySQL 5.6

 | May 19, 2014 |  Posted In: High-availability, Insight for DBAs, MySQL

I have previously written about the new replication protocol that comes with GTIDs in MySQL 5.6. Because of this new replication protocol, you can inadvertently create errant transactions that may turn any failover to a nightmare. Let’s see the problems and the potential solutions. In short Errant transactions may cause all kinds of data corruption/replication […]

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High Availability with MySQL Fabric: Part I

and  | May 15, 2014 |  Posted In: High-availability, Insight for DBAs, MySQL

In our previous post, we introduced the MySQL Fabric utility and said we would dig deeper into it. This post is the first part of our test of MySQL Fabric’s High Availability (HA) functionality. Today, we’ll review MySQL Fabric’s HA concepts, and then walk you through the setup of a 3-node cluster with one Primary and two […]

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Exploring message brokers

 | May 5, 2014 |  Posted In: High-availability, MySQL

Message brokers are not regularly covered here but are, nonetheless, important web-related technologies. Some time ago, I was asked by one of our customer to review a selection of OSS message brokers and propose a couple of good candidates. The requirements were fairly simple: behave well when there’s a large backlog of messages, be able […]

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Managing farms of MySQL servers with MySQL Fabric

and  | April 25, 2014 |  Posted In: High-availability, Insight for DBAs, Insight for Developers, MySQL

While built-in replication has been a major cause for MySQL’s wide adoption, official tools to help DBAs manage replication topologies have typically been missing from the picture. The community has produced many good products to fill in this gap, but recently, Oracle has been filling it too with the addition of MySQL Utilities to the mix. One […]

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