The latest from the MySQL community

Dear MySQL users,

I’m glad to announce that MySQL X DevAPI extension for PHP 8.0.3 has been recently released!

If for some reason you don’t know what this is all about, then in short the MySQL X DevAPI for PHP add support for the new X DevAPI in PHP, and it’s released as an extension to the language. The X DevAPI enables application developers to write code that combines the strengths of the relational and document models –MySQL as a Document Store– using a modern NoSQL-like syntax that does not assume previous experience writing traditional SQL.

For general documentation about how to get started using MySQL as a document store, see “Using MySQL as a Document Store”.

Download the extension.

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Sometimes it can be useful to take a step back and look at the world from a bit larger distance than usual. So in this blog, I will take a look at the high level architecture of MySQL Server.

Info This is meant as a simplified overview and does not include all details. Overview of the MySQL Server Architecture

For the discussion I will be referring to the the following figure that shows some of the features and plugins of MySQL. Orange boxes are available both for the community version and the commercial (enterprise) version, whereas red means the plugin is exclusive for the commercial version. Ellipsoid elements are plugins, …

The Docker version of the distributions are often quite old. On Ubuntu 16.04 for example:

shell> docker --version 
Docker version 1.13.1, build 092cba3

But the current docker version is 17.09.0-ce (2017-09-26). It seems like they have switched from the old version schema x.y.z to the new year.month.version version schema in February/March 2017.

Install Docker CE Repository

Add the Docker's official PGP key:

shell> curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
OK

Add the Docker repository:

shell> echo "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable" > /etc/apt/sources.list.d/docker.list
shell> apt-get update

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The Docker version of the distributions are often quite old. On Ubuntu 16.04 for example:

shell> docker --version 
Docker version 1.13.1, build 092cba3

But the current docker version is 17.09.0-ce (2017-09-26). It seems like they have switched from the old version schema x.y.z to the new year.month.version version schema in February/March 2017.

Install Docker CE Repository

Add the Docker's official PGP key:

shell> curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
OK

Add the Docker repository:

shell> echo "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable" > /etc/apt/sources.list.d/docker.list
shell> apt-get update

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As you may already know,  since MySQL 5.7.17, the generic partitioning handler in the MySQL server is deprecated, and is completely removed in MySQL 8.0.

So now, in MySQL 5.7, the storage engine used for a given table is expected to provide its own (“native”) partitioning handler. Currently, only the InnoDB and NDB storage engines do.

MySQL 5.7 supports generic partitions & native partitions

What does that imply for users using partitions in an earlier version MySQL  migrating to 5.7 ?

As the documentation describes it, the generic partitioning handler is still supported in all MySQL 5.7 releases, although it is deprecated in 5.7.17 and later. (Note that “deprecated” is not the same as …

Thank you everyone who attended our webinar on “What’s new in Monyog & Roadmap update”.

In this webinar, Shree Nair, Product Manager at Webyog demonstrated the various features introduced in Monyog since v8.1.0. Moreover, Shree showcased a number of scenarios on how to align the new features per use case.

Here’s the complete video for all those who couldn’t attend the webinar.

Summary of the top features discussed in the webinar: Set distinct email distribution list for warning and critical alerts

Monyog allows users to specify separate recipients depending on the state of the alert, i.e., critical, warning or others. The critical alerts such as server going down, slave not running can be sent to the on-call DBAs while other warning alerts can be sent to members of the team.

Trend Graph Analysis

Trend graph analysis makes it easier to compare the state and …

Overview

ProxySQL had been adopted as solution for HA in place of HAProxy in Percona PXC package.
The new solution has a lot of advantages and provide an unbelievable flexibility we did not had before.  But when talking about HA and PXC there was still a gap.

As already discussed in my previous article “ProxySQL and Percona XtraDB Cluster (Galera) Integration”(https://www.percona.com/blog/2016/09/15/proxysql-percona-cluster-galera-integration/),
ProxySQL is working great when using multi-master approach, but trying to have it in single Node writer, was not possible unless using creative (nice way to say wrong) solutions like what I was covering in “ProxySQL and PXC using Replication HostGroup” in the same article.

In the following months, I had few emails and requests from …

Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community.

So we have announced the call for presentations for Percona Live Santa Clara 2018. Please send your submissions in!

As you probably already know, we have been expanding the content to be more than just MySQL and MongoDB. It really does include more open source databases: the whole of 2016 had a “time series” theme to it, and we of course love to have more PostgreSQL content (there have been tracks dedicated to PostgreSQL for sometime now). I found this one comment interesting recently, from John Arundel, “If you’re going to learn one database really well, make it Postgres.” I have been noticing newer developers jump on the …

Since the purpose of a database system is to store data, there is close relationship with the filesystem. As MySQL consultants, we always look at the filesystems for performance tuning opportunities. The most common choices in term of filesystems are XFS and EXT4, on Linux it is exceptional to encounter another filesystem. Both XFS and EXT4 have pros and cons but their behaviors are well known and they perform well. They perform well but they are not without shortcomings.

Over the years, we have developed a bunch of tools and techniques to overcome these shortcomings. For example, since they don’t allow a consistent view of the filesystem, we wrote tools like Xtrabackup to backup a live MySQL database. Another example is the …

Do you need to get to grips with MySQL proxies? Or maybe you could do with discovering the latest developments and plans for Percona’s software?

Well, wait no more because …

on Wednesday November 15, 2017, we bring you a webinar double bill.

Join Percona’s Chief Evangelist, Colin Charles as he presents “The Proxy Wars – MySQL Router, ProxySQL, MariaDB MaxScale” at 7:00 am PST / 10:00 am EST (UTC-8).

Reflecting on his past experience with MySQL proxies, Colin will provide a short review of three open source solutions. He’ll run through a comparison of MySQL Router, MariaDB MaxScale and ProxySQL and talk about the reasons for using the right tool for an application.

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