We have just released MySQL 8.0.20. And it has some interesting replication enhancements. In particular one big and exciting feature: binary log compression. Here is the list of things in this release:

• Binary Log Compression (WL#3549). This work done by Luís Soares implements binary log compression, making use of the popular compression algorithm ZSTD.

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The MySQL Development Team is happy to announce a new 8.0 Maintenance Release of MySQL Shell AdminAPI – 8.0.20!

Following the previous exciting release, on which InnoDB ReplicaSet was introduced, we focused on improving the management of ReplicaSets but also, most importantly, InnoDB cluster.…

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How to achieve MySQL high availability, data protection & disaster recovery

This MySQL high availability and disaster recovery use case is based on a customer of ours who is a government-regulated lottery service consisting of a number of games of chance. Its mission is to fuel imagination – and fund education for all citizens of their state as it uses the proceeds of its activities to do so. Through its games, it has provided billions of dollars in scholarship and other such education funding for several decades.

What is the Challenge?

As is common for gambling and betting organisations, our customer faced a number of challenges and needed to have a solid infrastructure in place in order to provide its services satisfactorily.

This includes:

• Ensuring 24/7/365 availability of its online gaming platform
• Handling thousands of transactions quickly and while ensuring zero downtime …

Percona XtraDB Cluster 8.0 is in the final stretch before GA release and we have pre-release packages available for testing, and I wanted to see how Percona XtraDB Cluster 8.0 performs in CPU and IO-bound scenarios, like in my previous posts about MySQL Group Replication.

In this blog, I want to evaluate Percona XtraDB Cluster 8.0 scaling capabilities in I/O bound cases when we increase the number of nodes and increase user connections. The version I used is available here: …

Percona XtraDB Cluster 8.0 is on the final stretch before GA release, and we have pre-release packages available for testing.

I wanted to see how Percona XtraDB Cluster 8.0 performs in CPU and IO-bound scenarios, like in my previous posts about MySQL Group Replication.

In this blog, I want to evaluate Percona XtraDB Cluster 8.0 scaling capabilities in cases when we increase the number of nodes and increase user connections. The version I used is available here: Percona-XtraDB-Cluster-8.0.18. …

This is a three-part blog series that focuses on dealing with an unexpected high traffic event as it is happening. Part one can be found here, and part two can be found here.   13. Configure MySQL Server Properly

Complexity:Medium
Potential Impact: High 

A poorly configured MySQL Server can cause severe issues, especially under high load during a traffic spike, yet getting the basics right is not that hard. While MySQL Server has more than 400 variables you can tune, you rarely need to change more than 10-20 of them to get 95% of the possible performance for your workload.

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This is a three-part blog series that focuses on dealing with an unexpected high traffic event as it is happening. Part one can be found here and part three can be found here. 7. Get More Memory

Complexity: Low
Potential Impact: High

If your data does not fit into memory well, your MySQL performance is likely to be severely limited. If your data already fits in well, adding even more memory will not provide any performance improvements.

Even when you’re running on very fast storage, such as Intel Optane or directly Attached NVMe Storage, accessing data in memory is still more than an order …

This is a three-part blog series. Part two is located here, and part three can be found here.

There was no reason to plan for it, but the load on your system increased 100%, 300%, 500%, and your MySQL database has to support it. This is a reality many online systems have to deal with these days. This series focuses on dealing with the unexpected high traffic event as it is happening.

There are also a lot of things you can do proactively, which we covered in “Prepare Your Databases for High Traffic on …

Thanks to everyone who joined us last week for this webinar hosted by Database Trends & Technologies (DBTA) and presented by Continuent CEO Eero Teerikorpi. The replay is now available to watch:

How to build a $10M SaaS business into a $6B Unicorn with MySQL and Continuent Tungsten

In this webinar, Eero walks us through the 10-year story of a marketing analytics SaaS, which grew with help from MySQL and Continuent from $10M to be a $6B behemoth: a real SaaS unicorn; and covers a number of related use cases also.

SaaS has emerged as the best way to deliver software, and SaaS solutions, at their best, …

Percona is happy to announce the experimental release of Percona XtraDB Cluster 8.0. This is a major step for tuning Percona XtraDB Cluster to be more cloud- and user-friendly. This is the second experimental release that combines the updated and feature-rich Galera 4, with substantial improvements made by our development team.

Improvements and New Features in Percona XtraDB Cluster

Galera 4, included in Percona XtraDB Cluster 8.0, has many new features. Here is a list of the most essential improvements:

• Streaming replication to support large transactions
• The synchronization functions allow action coordination (wsrep_last_seen_gtid, wsrep_last_written_gtid, wsrep_sync_wait_upto_gtid)
• More granular and improved error logging. wsrep_debug is …