ProxySQL 2.0.7, released by ProxySQL, is now available for download in the Percona Repository along with Percona’s proxysql-admin tool.

ProxySQL is a high-performance proxy, currently for MySQL and database servers in the MySQL ecosystem (like Percona Server for MySQL and MariaDB). It acts as an intermediary for client requests seeking resources from the database. René Cannaò created ProxySQL for DBAs as a means of solving complex replication topology issues.

This release includes ProxySQL 2.0.7 which introduces many new features and enhancements and also …

InnoDB Page Compression Explained 

We have several customers with multi-terabyte database infrastructure on SSDs, The SSDs are great investment for performance but they are also expensive with shorter lifespans so storage efficiency management is something we are very cautious about on SSDs, At MinervaDB Labs we spend considerable amount of time doing research on InnoDB page compressions benefits and most common mistakes. The compressed tables were first introduced in 2008  with InnoDB plugin for MySQL 5.1 . Facebook has been a major committer to this project and most of it were later implemented in upstream MySQL code as well. We can implement compression in InnoDB is two ways, Either by using Barracuda InnoDB file format or ROW_FORMAT=COMPRESSED

How InnoDB page compression works ?

When a page is …

Dear MySQL users,

The MySQL Windows Experience Team is proud to announce the release
of MySQL for Visual Studio 1.2.9.

This is a maintenance release for 1.2.x. It can be used for
production environments.

MySQL for Visual Studio is a product that includes all of the
Visual Studio integration functionality to create and manage
MySQL databases when developing .NET applications.

MySQL for Visual Studio is installed using the MySQL Installer
for Windows which comes in 2 versions:
   * Full (415.1 MB) which includes a complete set of MySQL products
     with their binaries included in the downloaded bundle.
   * Web (18.6 MB – a network install) which will just pull MySQL
     for Visual Studio over the web and install it when run.

You can download MySQL …

Its not the new term for DBAs. MySQL has an awesome parameter innodb-file-per-tables allows MySQL to create separate files for each tables. This helped a lot to manage the disk space in more efficient way. But when we perform a large batch job for delete or update the data in MySQL tables, you may face this fragmentation issue. Comparing with SQL server, MySQL’s fragmentation is not high. I had a similar situation where my Disk space was consuming 80% and when I check the huge files in OS, one table’s idb file consumed 300GB+. I know it has some wasted blocks(but not actually wasted, MySQL will use this space, it’ll not return this to OS) Then I checked the information schema to find out the data size and its index size. It was 27GB only. Then I realize, we did a batch operation to delete many billions of records in that table.

Thanks to Rolando - MySQL DBA:

When I searched the similar …

 Understand dirty reads when using ProxySQL

 Recently I had been asked to dig a bit about WHY some user where getting dirty reads when using PXC and ProxySQL. 

While the immediate answer was easy, I had taken that opportunity to dig a bit more and buildup a comparison between different HA solutions. 

 For the ones that cannot wait, the immediate answer is …drum roll, PXC is based on Galera replication, and as I am saying from VERY long time (2011), Galera replication is virtually synchronous. Given that if you are not careful you MAY hit some dirty reads, especially if configured incorrectly. 

 There is nothing really bad here, we just need to know how to handle it right. 

In any case the important thing is to understand some basic concepts. 

Two ways of seeing the world (the theory)

Once more let us talk about data-centric approach and …

 Understand dirty reads when using ProxySQL

 Recently I had been asked to dig a bit about WHY some user where getting dirty reads when using PXC and ProxySQL. 

While the immediate answer was easy, I had taken that opportunity to dig a bit more and buildup a comparison between different HA solutions. 

 For the ones that cannot wait, the immediate answer is …drum roll, PXC is based on Galera replication, and as I am saying from VERY long time (2011), Galera replication is virtually synchronous. Given that if you are not careful you MAY hit some dirty reads, especially if configured incorrectly. 

 There is nothing really bad here, we just need to know how to handle it right. 

In any case the important thing is to understand some basic concepts. 

Two ways of seeing the world (the theory)

Once more let us talk about data-centric approach and …

Loading any large file into MySQL server using the LOAD DATA INFILE is a time consuming process , because it is single threaded and it is a single transaction too. But with modern hardwares system resource is not a bottle neck. At Mydbops we focus on improving the efficiency of process as we value performance more. MySQL introduced the parallel load data operations in its latest minor release MySQL 8.0.17 . I had the curiosity to test this feature and wanted to know, how it can improve the data loading comparing to the existing single threaded method  . Through this blog I am going to  compare the both methods .

Remember you can use the parallel data loading utility only via MySQL Shell .

Internal Work Flow :

This section describes the …

MySQL 8 has recently released clone plugin which makes DBA’s task of rebuilding the DB servers more easy.

• Cloning is a process of creating an exact copy of the original. In technical terms cloning alias to (Backup + Recovery), MySQL database cloning requires a sequence of actions to be performed manually or in a scripted fashion with and without the tools involved.
• Cloning is the first step when you want to configure the replication slave or Joining a new server to the InnoDB cluster. There was no native support for auto provisioning earlier. Percona XtraDB Cluster (MySQL + Galera Cluster) does cloning using xtrabackup tool by default when a new node joins the cluster.
• Now MySQL simplified this task, In this post, We will see how to clone the database using clone plugin and its internals.

Dear MySQL users,

MySQL Connector/Python 8.0.18 is the latest GA release version of the
MySQL Connector Python 8.0 series. The X DevAPI enables application
developers to write code that combines the strengths of the relational
and document models using a modern, NoSQL-like syntax that does not
assume previous experience writing traditional SQL.

To learn more about how to write applications using the X DevAPI, see

http://dev.mysql.com/doc/x-devapi-userguide/en/

For more information about how the X DevAPI is implemented in MySQL
Connector/Python, and its usage, see

http://dev.mysql.com/doc/dev/connector-python

Please note that the X DevAPI requires at least MySQL Server …

Dear MySQL users,

MySQL Shell 8.0.18 is a maintenance release of MySQL Shell 8.0 Series (a
component of the MySQL Server). The MySQL Shell is provided under
Oracle’s dual-license.

MySQL Shell 8.0 is highly recommended for use with MySQL Server 8.0 and
5.7. Please upgrade to MySQL Shell 8.0.18.

MySQL Shell is an interactive JavaScript, Python and SQL console
interface, supporting development and administration for the MySQL
Server. It provides APIs implemented in JavaScript and Python that
enable you to work with MySQL InnoDB cluster and use MySQL as a document
store.

The AdminAPI enables you to work with MySQL InnoDB cluster, providing an
integrated solution for high availability and scalability using InnoDB
based MySQL databases, without requiring advanced MySQL expertise. For
more information about how to …