The latest from the MySQL community

The following is the very basic Python App connecting to MySQL Database. (01-connect.py)
It connects to the MySQL Database (127.0.0.1:3306 with root and empty password). 
import mysql.connector
import sys

if len(sys.argv) > 1 :
        _pass = sys.argv[1]
else :
        _pass = ''
cnx = mysql.connector.connect(user='root', password=_pass, host='127.0.0.1', port=3306, database='mysql')

cnx.close()
The alternative using Python Dictionary parameter -

This can be useful way to connect to MySQL Database with named parameters. (02-connect.py)
import mysql.connector
import sys

_pass = ''
if len(sys.argv) > 1 :
        _pass = sys.argv[1]

config = {
…

I would like to share my trip to Romania/Bucharest for User Group Leaders summit.
It was really great meeting. Great people, talks, discussions, food and etc.
I want to create same atmosphere in Azerbaijan/Baku next year
Here are some of the photos:

…

Percona is glad to announce the release of Percona XtraDB Cluster 5.7.11-4beta-25.14.2 on June 9, 2016. Binaries are available from the downloads area or our software repositories.

NOTE: This beta release is only available from the testing repository. It is not meant for upgrade from Percona XtraDB Cluster 5.6 and earlier versions. Only a fresh installation is supported.

Percona XtraDB Cluster 5.7.11-4beta-25.14.2 is based on the following:

• …

In this blog post, I’ll discuss how to use MySQL 5.7 Document Store to track data from Internet of Things (IoT) devices.

Using JSON in MySQL 5.7

In my previous blog post, I’ve looked into MySQL 5.7.12 Document Store. This is a brand new feature in MySQL 5.7, and many people are asking when do I need or want to use the JSON or Document Store interface?

Storing data in JSON may be quite useful in some cases, for example:

• You already have a JSON (i.e., from external feeds) and need to store it anyway. Using the JSON datatype will be more convenient and more efficient.
• For the Internet of Things, specifically, when storing events from …

Following the recent completion of our testers programme for NinesControl, we’re now happy to announce the public availability of NinesControl (beta), the database infrastructure management solution for the cloud.

Many thanks to our testers for participating in the NinesControl feedback programme. With the collective insight gained, we were able to fine-tune this initial public release and present it to you today.

With NinesControl, users can now easily and quickly deploy and monitor (MySQL) Galera clusters on DigitalOcean. Droplets are launched and managed using your own DigitalOcean account.

We encourage you to sign up on ninescontrol.com and try this new service out.

NinesControl is designed with developers in mind. Spend time developing your applications and let the service provision, monitor and manage …

The slides of my talk on best practices to monitor large scale MySQL deployments, are now available for download. This slide was presented during Percona Live 2016.

Monitoring MySQL at scale from Ovais Tariq

Proper MySQL Query Optimization starts with a proper Slow Query Logging session. And MySQL Query Optimization is where I spend 70-80% of my time when doing MySQL performance optimization. In this short series I will show you how to do Slow Query Logging the right way.

Here’s links to the other two parts:

• Advanced MySQL Slow Query Logging Part 2: pt-query-digest report
• Advanced MySQL Slow Query Logging Part 3: fine-tuning the logging process

The post Advanced MySQL Slow Query Logging appeared first on Speedemy.

In this post, we’ll discuss some insight I’ve gained regarding severe performance regression in MySQL 5.7 crash recovery.

Working on different InnoDB log file sizes in my previous post:

What is a big innodb_log_file_size?

I tried to understand how we can make InnoDB crash recovery faster, but found a rather surprising 5.7 crash recovery regression.

Basically, crash recovery in MySQL 5.7 is two times slower, due to this issue: https://bugs.mysql.com/bug.php?id=80788. InnoDB now performs the log scan twice, compared to a single scan in MySQL 5.6 (no surprise that there is performance degradation).

Fortunately, there is a proposed patch for MySQL 5.7, so I hope it will be improved soon.

As for general crash …

Please join us on Thursday June 9, at 10:00 am PDT (UTC-7) for the webinar Troubleshooting MySQL configuration issues.

MySQL Server is highly tunable. It has hundreds of configuration options which provide great tuning abilities and, at the same time, can be the source of various issues.

In this webinar you will learn which types of options MySQL Server supports, when they take effect and how to modify configuration safely. I will demonstrate best practices and tricks, used by Support engineers when they work with bug reports and customer issues which highly depend on configuration.

…

Percona is glad to announce the GA release of Percona Server 5.7.12-5 on June 6, 2016. Download the latest version from the Percona web site or from the Percona Software Repositories.

Based on MySQL 5.7.12, including all the bug fixes in it, Percona Server 5.7.12-5 is the current GA release in the Percona Server 5.7 series. All of Percona’s software is open-source and free, all the details of the release can be found in the …