Tag: MySQL

Exposing MyRocks Internals via system variables: Part 2, Initial Data Flushing

(In the previous post, Part 1, we covered Data Writing.) In this blog post, we continue on our series of exploring MyRocks mechanics by looking at configurable server variables and column family options. In our last post, I explained at…

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Exposing MyRocks internals via system variables: Part 1, Data Writing

Series Introduction Back in 2016 I decided to write a blog series on InnoDB in hopes that it would help give a good description of the high level mechanics of the storage engine. The main motivating factor at that time…

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Obtaining an active-passive ProxySQL on FreeBSD

When designing a highly-available MySQL architecture, having a proxy to route the traffic to the appropriate instances is crucial to achieve transparent (or almost) failovers/switchovers. ProxySQL, a popular open source, SQL-level proxy is a great choice for this, and even…

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Automating Tungsten upgrades using Ansible

Continuent Tungsten is one of the few all-in-one solutions for MySQL high availability. In this post I will show you how to automate the upgrade process using Ansible. I will walk you through the individual tasks and, finally, give you…

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Rotating your ProxySQL log files

Recently I received several questions about rotating log files for ProxySQL, so I decided to draft it up as a blog post. Let me go by this using an example. In my testing lab, I have set up a fairly…

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Monitoring your 5.7 InnoDB cluster status

Recently we had a customer who came to us for help with monitoring their InnoDB cluster setup. They run a 5.7 InnoDB cluster and suffered from a network outage that split up their cluster leaving it with no writeable primaries….

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What to expect at FOSDEM 2019

In just over two weeks, on Feb 2-3, FOSDEM 2019 will take place. As happens every year, the first weekend of February The University Libre de Bruxelles (ULB) opens the doors of campus Solbosch to the worldwide open source community. What…

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Log buffer #558: a carnival of vanities for DBAs

This log buffer edition overs cloud, Oracle, PostgreSQL and MySQL. Cloud On December 4, 2018 Microsoft’s Azure Database for Open Sources announced the general availability of MariaDB. This blog intends to share some guidance and best practices for alerting on…

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How a social media platform benefits from upgraded security and performance

We recently helped a social media management platform improve its security and performance. The social media platform supports social network integrations for Twitter, Facebook, Instagram, LinkedIn and YouTube, and has more than 15 million users. The company needed to ensure…

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Is slave_exec_mode idempotent actually idempotent?

Co-Author: Rafael Alvarez When you look up the word idempotence in wikipedia you get the following definition: Idempotence is the property of certain operations in mathematics and computer science whereby they can be applied multiple times without changing the result beyond the…

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