Recently Oracle announced several new features for the latest available development version of MySQL that is 5.7.2 at the time of writing this article. Most of them are performance and replication related that show us how incredible the new release will be.

In this post I’m going to try to explain in some easy steps how the new multi-source replication works and how we can configure it for our own tests. It is important to mention that this is a development release, so it is not production ready. Therefore this post is intend to people that want to test the new feature and see how it works with their application, always in a staging environment.

What is multi-source replication?

First, we need to have clear that multi-master and multi-source replication are not the same. Multi-Master replication is the usual circular replication where you can write on any server and data gets replicated …

With today’s announcement of the second MySQL 5.7 Development Milestone Release and a new labs release it’s a very exciting time for MySQL Replication. MySQL 5.6 contained a lot of new content to make replication faster, easier to use and more reliable (Global Transaction Identifiers, Multi-Threaded Slaves, Binary Log Group Commit, Optimized Row Based Replication, Crash Safe Replication, Replication Event Checksums, Time Delayed Replication & Informational Logs) and now we want to improve things even further.

The new DMR has something for everyone.

With the improvements to Semi-Synchronous Replication, the application developer can be confident that when a transaction has been …

I wanted install MySQL 5.7.1 (1st Milestone Release) on Windows 7 and test it out a bit, so I did, and since things didn’t go as smooth as expected, I thought I’d share my experience, in case anyone else runs into the same issues.

I downloaded the .msi (mysql-5.7.1-m11-winx64.msi) from http://dev.mysql.com/downloads/mysql/ (then click the “Developmental Releases” tab) and installed it following the prompts. That seemed to complete fine, which was great. However, that was it – and not in a good way. I mean, the “installer” basically only unpacked the files to a location.

I was expecting the “configuration” tool to run, but it didn’t. It was not installed, and not an option.

I quickly read through the 5.7.1 changelog and found the config tool is not part of the .msi anymore. You must now use the “MySQL Installer” if you want to …

Continuing on from yesterday, the biggest news that I’ve noted in the past 24 hours:

1. The commitment from Oracle’s MySQL team to release a new GA about once every 24 months, with a Developer Milestone Release (DMR), with “GA quality” every 4-6 months. Tomas Ulin announced MySQL 5.7 DMR1 (milestone 11) [download, release notes, manual]. He also announced MySQL Cluster 7.3 DMR2 [download, …

MySQL 5.6 is out now and that is good news. I have already been using pre-GA versions on some production servers with good success and now that the few wrinkles I have seen have been ironed out, I am sure a lot of people will find the new features in 5.6 well worth waiting for.

However, that does lead to the question of: “what next?”

I still have several things that I would like to see in MySQL in no specific order of preference such as:

• Session transaction state exposed as a variable to allow you to determine if you have started a transaction or not, and thus allowing you to use BEGIN WORK, ROLLBACK or COMMIT as needed.  This information is available via the C API I believe but not via SQL.  Something like @@in_transaction = 1.  Makes modular programming easier.
• Table space management. The default behaviour now in 5.6 is to move to innodb_file_per_table = 1, but really on a large …

Are you tired of manually generating test data for your MySQL tables? If you’re looking for random data generator, look no further! Introducing the MySQL Random Data Generator, a powerful…

The post How To Generate Random test Data In MySQL first appeared on Change Is Inevitable.