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MySQL Engineering Blogs

Improved ALTER USER Syntax Support in 5.7
Complimenting the expanded CREATE USER syntax introduced in MySQL Server 5.7.6 is more useful ALTER USER syntax. Before MySQL Server 5.7.6, ALTER USER could only be used to expire a user’s password. That’s pretty limited. With changes made in MySQL Server 5.7.6, a better distinction is...

HowTo: Retrieve Direct Messages From Twitter and Store Them in MySQL
In two earlier posts, I gave some examples on how to use Perl to send tweets stored in a MySQL database to Twitter, and then how to automatically reply to your retweets with a “thanks”. In this post, I will show you how to automatically download your direct messages from Twitter, store...

Easy Load-balancing and High-availability using MySQL Router
The newest member of the MySQL family, the MySQL Router, was released on just a few days ago. In the two previous posts, you could see what kind of features that are currently available as well as how to compile and install the MySQL...

MySQL 5.7 Labs — Using Loopback Fast Path With Windows 8/2012
TCP Loopback fast path In Windows 8 and Windows server 2012, Microsoft introduced a new “TCP Loopback fast path” feature (see the Microsoft Technet article: Fast TCP Loopback Performance and Low Latency with Windows Server 2012 TCP Loopback Fast...

Compiling and Using the MySQL Router Labs Release
Last week we released MySQL Router into our Labs and we need to provide a few extra details on how to actually use it. Requirements A modern OS which comes with a compiler supporting C++11. For example, Ubuntu 14.04 and later, Oracle Linux 7, OS X...

MySQL Router on Labs – The Newest Member of the MySQL family
The MySQL team are busily working on improving ways to use MySQL in scalable highly available systems. As most of you are already aware, the MySQL Group Replication project is progressing at full speed. Indeed, we just got preview release 0.5 out, while Fabric 1.5.6 was just released and work is...

Protecting MySQL Passwords With the sha256_password Plugin
Over the years, MySQL has used three different mechanisms for securing passwords both for storage and for transmission across networks. This blog post aims to provide a brief history of the various mechanisms and highlight reasons to migrate accounts to use the sha256_password mechanism introduced...

MySQL Group Replication – 0.5.0 Labs Release
Hi all, keeping our steady release cycle, it is time again to do another preview release of MySQL Group Replication, the plugin that brings multi-master update everywhere to MySQL, like we described in Hello World post. We are very proud to do the fourth preview release of MySQL Group Replication,...

Recovery Enhancements for Group Replication
One of the key features of MySQL Group Replication is its distributed recovery mechanism. Whenever a new member joins a server group, making use of this plugin component, it reaches to a suitable donor and fetches the data that it misses up until the point it is declared...

MySQL Group Replication: Auto-increment configuration/handling
In 0.5.0 version of MySQL Group Replication plugin, we have introduced the Auto-increment configuration/handling feature through which auto increment variables (auto_increment_increment and auto_increment_offset) are auto configured by the plugin, so that different members of the...

Track and Optimize Server Connection Methods
The MySQL server supports a variety of client connection methods. To summarize: you have TCP/IP (v4 and v6) on all OSes (with or without TLS/SSL encryption), Unix Domain Sockets on Unix/Linux, and Named Pipes and/or Shared Memory on Windows. Each of these connection methods has its own set of pros...

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