The JSON Functions for using MySQL 5.7 are overwhelming at first glance. A peek at documentation such as the JSON Modification Functions may make you shy at proceeding further. In previous posts the functions to create JSON documents for use in a MySQL column and the functions to get the meta information about JSON documents have been covered. And how to use the built-in JSON functions from PHP have been covered. But now it is time to cover modifying JSON data. Appending Lets start at the beginning and ask the server for a JSON array with the values of 1, 2, 3, 4, and 5.

mysql> select JSON_ARRAY(1,2,3,4,5);
+-----------------------+
| JSON_ARRAY(1,2,3,4,5) |
+-----------------------+
| [1, 2, 3, 4, 5]       |
+-----------------------+
1 row in set (0.00 sec)

mysql> 

Using …

One of the more frequently asked questions with MySQL 5.7 is “How can I upgrade my JSON data from using TEXT in an earlier version of MySQL to use the native JSON data type?”. Today I wanted to show an example of how to do so, using sample data from SF OpenData.…

Percona is glad to announce the GA release of Percona Server 5.7.11-4 on March 15, 2016. Download the latest version from the Percona web site or from the Percona Software Repositories.

Based on MySQL 5.7.11, including all the bug fixes in it, Percona Server 5.7.11-4 is the current GA release in the Percona Server 5.7 series. All of Percona’s software is open-source and free, …

In this blog, we’ll discuss how Percona XtraDB Cluster handled a high latency network environment.

Recently I was working in an environment where Percona XtraDB Cluster was running over a 10GB network, but one of the nodes was located in a distant location and the ping time was higher than what you would typically expect.

For example, the following shows the ping time between nodes in my local cluster:

ping 172.16.0.1 -s 1024
PING 172.16.0.1 (172.16.0.1) 1024(1052) bytes of data.
1032 bytes from 172.16.0.1: icmp_seq=1 ttl=64 time=0.144 ms
1032 bytes from 172.16.0.1: icmp_seq=2 ttl=64 time=0.110 ms
1032 bytes from 172.16.0.1: icmp_seq=3 ttl=64 time=0.109 ms
1032 bytes from 172.16.0.1: icmp_seq=4 ttl=64 time=0.125 ms

Generally speaking, you can say that the …

If you are working on code php and you require to count number of files images zip file rar files etc in the given folder path then you can count using glob and count of php So lets see this bellow example and learn how it donestrong classexamplestrongpre classprettyprint l

When i was working on my code PHP project at that time i need to remove specific items value from my array i did google search and solve that but i would like to share in my site how to remove value from array so lets see how to usestrong classexampleExamplestrongpre classprettyp

Both configs have a typo:
innodb_thread_concurrencty = 32

Have to be:
innodb_thread_concurrency = 32

In the previous blog posts, we gave a brief introduction to ClusterControl Developer Studio and the ClusterControl Domain Specific Language and how to extract information from the Performance Schema. ClusterControl’s Developer Studio allows you to write your own scripts, advisors and alerts. With just a few lines of code, you can already automate your clusters!

In this blog post we will dive deeper into Developer Studio and show you how you can keep an eye on performance and at the same time scale out the number of read slaves in your replication topology whenever it is necessary.

CMON RPC

…

Azerbaijan MySQL User Group next meeting was with IT girls from “WoWoman” division in Baku.
We have talked about Linux and MySQL.
There was a hands-on lab about installing Ubuntu, working with basic Linux commands.

I would like to share some photos from this event

MySQL replication performance is a topic that requires no special introduction. Replication was never designed to be extremely fast and there isn't a single MySQL DBA who wouldn't learn it the hard way.
Today, with the improvements introduced in MySQL 5.7, as well as a complete re-implementation done by Amazon Aurora, it seems like we can finally see the light at the end of this very long tunnel.
Let's take both products for a spin and see how they behave. Introduction Before we get busy with the benchmarks, let's quickly explain why MySQL 5.7 and Amazon Aurora are so special. I wouldn't spend a weekend testing them if they weren't, right? MySQL MySQL 5.7 finally uses multi-threaded slave (MTS) implementation that makes sense. Long story short: instead of doing poor man's multithreading that requires you to split your data into multiple schemas (and doesn't guarantee consistency for cross-schema modifications), it can simply replay …