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Translated books in Chinese
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I have just received copies of my Effective MySQL series that are available in Chinese. The picture speaks more than words.




SQL, ANSI Standards, PostgreSQL and MySQL
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I have recently been working with the Donors Choose Open Data Set which happens to be in PostgreSQL. Easy enough to install and load the data in PostgreSQL, however as I live and breath MySQL, lets load the data into MySQL.

And here is where start our discussion, first some history.

SQL History

SQL – Structure Query Language is a well known common language for communicating with …

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How to Manage the World’s Top Open Source Databases: ClusterControl 1.2.9 Features Webinar Replay
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Thanks to everyone who attended and participated in this week’s webinar on 'New Features - ClusterControl 1.2.9 Release'. If you missed the sessions or would like to watch the webinar again & browse through the slides, they are now available online.

Our speaker this time was Johan Andersson, CTO, Severalnines.

Watch the replay

Introducing the new ClusterControl 1.2.9 - with live demo from

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InnoDB全文索引:N-gram Parser
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InnoDB默认的全文索引parser非常合适于Latin,因为Latin是通过空格来分词的。但对于像中文,日文和韩文来说,没有这样的分隔符。一个词可以由多个字来组成,所以我们需要用不同的方式来处理。在MySQL 5.7.6中我们能使用一个新的全文索引插件来处理它们:n-gram parser.

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A few interesting findings on MariaDB and MySQL scalability, multi-table OLTP RO
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It’s been almost a year since I benchmarked MariaDB and MySQL on our good old 4 CPU / 32 Cores / 64 Threads Sandy Bridge server. There seem to be a few interesting things happened since that time.

  • MySQL 5.6.23 peak throughput dropped by ~8% compared to 5.6.14. Looks like this regression appeared in MySQL 5.6.21.
  • 10.0.18 (git snapshot) peak threads increased by ~20% compared to 10.0.9 and reached parity with 5.6.23 (not with 5.6.20 though).
  • 10.1.4 (git snapshot) and 5.7.5 are …
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MariaDB: The Differences, Expectations, and Future
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Thu, 2015-03-26 07:48russelljtdyer

For my new book, Learning MySQL and MariaDB, Monty Widenius, one of the founders of MySQL and MariaDB, graciously contributed a Foreword. It's about six pages long and an interesting read for those who are familiar with MySQL and MariaDB. Of particular interest to newcomers to MariaDB, is the excerpt below on his perspective of MariaDB and his vision for its future, as well as MySQL.

Excerpt from Foreword of …

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Save 20% on Percona Live and Hear Baron Speak
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Percona Live is the premier event for the MySQL ecosystem. It is being held in Santa Clara this year, April 13 - 16. If you are not already registered, use the code Vividcortex20 to receive a 20% discount.

We will be exhibiting, and Baron Schwartz will be speaking on Encrypting Data in MySQL with Go on April 16th at 12:50.

We look forward to seeing you!

How to Tell If It’s MySQL Swapping
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On servers that are into the swap file and have multiple processes running, I often wonder if it’s MySQL that is in the swap or some other process.  With Linux this is a fairly easy thing to figure out.  Below is the format of a command to do just that:

echo 0 $(cat /proc/`pidof process`/smaps | grep TYPE | awk '{print $2}' | sed 's#^#+#') | bc

 

In the above command, TYPE refers to what type of Memory you want to examine.  Below are some of the options for this value:

TYPE Explanation
Private Private …
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MySQL Statement Digests
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Decoupling Statement Digests From Performance Schema

MySQL Statement Digests are a feature originally introduced as part of the MySQL Performance Schema in MySQL 5.6 to aggregate statement statistics based on the normalized statements executed within the server (for additional info, see here).

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How to Cluster Atlassian Server Apps in your Data Center - JIRA, Confluence, Stash with MySQL Galera Cluster
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Atlassian apps are widely used by development teams to facilitate software development and collaboration. For larger teams who require enterprise-grade tools, you might want to host the applications in your own data center and cluster them for high availability and performance. 

In this blog post, we are going to deploy a redundant active-passive setup for JIRA with clustered MySQL and NFS shared storage. Note that some Atlassian applications (JIRA, Confluence and Stash) already has built-in clustering support, …

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Showing entries 1 to 10 of 34173 10 Older Entries

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