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240 blog posts in 13 categories

MySQL Performance Cheat Sheet

You would be surprised by the number of MySQL installations running default configurations, regardless of the workload. However, what works well for a read-intensive workload might not work as well for a write-intensive one. Configuration parameters also need to take into account the underlying hardware. This cheat sheet provides some quick tips on how to tune some of the key MySQL variables in order to improve performance.

MySQL in 2018: What’s in 8.0 and Other Observations

This blog details MySQL’s accomplishments in 2018, including the release of MySQL 8.0 which includes changes to roles and the integration of NoSQL.

Database High Availability Comparison - MySQL / MariaDB Replication vs Oracle Data Guard

This blog compares MySQL replication vs Oracle Data Guard solution for High Availability.

How to Improve Replication Performance in a MySQL or MariaDB Galera Cluster

Can we increase Galera performance if we speed up applying data that is replicated between its nodes? In this blog post, we assess the impact of having multiple wsrep_slave_threads on the overall performance of Galera cluster.

Webinar Replay: How to Manage Replication Failover Processes for MySQL, MariaDB & PostgreSQL

Watch the replay of this webinar for a detailed overview of what failover processes may look like in MySQL, MariaDB and PostgreSQL replication setups. We’ll cover the dangers related to the failover process and look at how ClusterControl manages it as well as how it can be configured for both assisted and automated failover.

MySQL & MariaDB Query Caching with ProxySQL & ClusterControl

A query cache can greatly improve database performance, and there are various types of mechanisms available - from the inbuilt MySQL query cache to external key value stores like memcached or Redis. In this blog, we’ll show you how to cache your queries via ProxySQL, and avoid the overhead of an additional dedicated caching layer.

MySQL on Docker: Multiple Delayed Replication Slaves for Disaster Recovery with Low RTO

A delayed replication slave is useful in recovering from accidental data deletion. But how long should the delay be? Too short delay might not be enough for you to get to a terminal and stop an offending query. Too long delay means a long recovery time when catching up.

This blog post shows how to deploy multiple MySQL delayed slaves on one single physical host with Docker, and shows some of the recovery scenarios.

Database Backups - Comparing MariaDB Mariabackup and Percona Xtrabackup

Percona XtraBackup is one of the most used tools for backing up MySQL and MariaDB databases. Mariabackup is a fork of XtraBackup, extending its functionality to support compression and at-rest encryption. In this blog, we will look at the differences between these two, and also see how we use them.

Percona Live Frankfurt 2018 - Event Recap & Our Sessions

Severalnines was a sponsor at 2018’s Percona Live Europe which was held in Frankfurt, Germany. This blog details our participation at the event and includes the slides from the sessions we presented.

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Effective Monitoring of MySQL With SCUMM Dashboards - Part 3

In this 3rd part of the blog series, we’ll discuss what ClusterControl’s new InnoDB Metrics and MySQL Performance dashboards have to offer. These dashboards provide a pretty in-depth view of MySQL performance. We’ll go through the different graphs, and see how a DBA can leverage them.

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