Public cloud spending is slowing down. Quarter-over-quarter growth is no longer hitting 30% gains for AWS, Google, and Microsoft. This is businesses’ response to tough and uncertain macroeconomic conditions, where organizations scrutinize their public cloud spending to optimize and adjust.

In this blog post, we will see how running databases on Kubernetes with Percona Operators can reduce your cloud bill when compared to using AWS RDS.

Inputs

These are the following instances that we will start with:

• AWS
• RDS for MySQL in us-east-1
• 10 x db.r5.4xlarge
• 200 GB storage each

The cost of RDS consists mostly of two things – compute and storage. We will not consider data transfer or backup costs in this article.

• db.r5.4xlarge – $1.92/hour or …

Oracle’s MySQL 5.7 has had a good, long run, but the official End of Life is October of 2023. The Era of MySQL 5.x will be over, and only MySQL 8.0 will be officially supported. Yup, six months away. So if you are running MySQL, you need to consider upgrading to version 8.0 N-O-W!!

What does an upgrade provide?

MySQL 8.0 has many really cool features and improvements that are well worth the upgrade. The default character set of UTF8MB4 gives Unicode version 9.0 support. So you get the Umaluts, Cedils, and C-J-K Language support in your data, plus emojis. 8.0 is optimized around this character set. This gives you all the international characters you probably need to support global operations.

The Structured Query Language has been greatly enhanced. If you have trouble writing subqueries, you rejoice in lateral-derived joins and Common Table Expressions (CTEs). There is a new intersect clause to aid with sets. …

New MySQL HeatWave capabilities released in 8.0.32-u1

We are pleased to announce the general availability of Vitess 16! Documentation improvements # In this release the maintainer team has decided to put an emphasis on reviewing, editing, and rewriting the website documentation to be current with the code. With help from CNCF, we have also improved the search experience. We welcome feedback on the current incarnation of the docs. GA announcements # We are marking VDiff v2 as Generally Available or production-ready in v16.

The fourth edition of the MySQL Cookbook, solutions for database developers and administrators is a huge book, 938 pages !

And the least we can say is that you get what you pay for !

This book is an excellent resource for anyone working with MySQL, whether you’re a beginner or a seasoned developer. The book provides a comprehensive collection of recipes that address various aspects of database management using MySQL.

Sveta and Alkin made an excellent job regrouping tips collected during many years of operating MySQL and helping users through support.

The book provides a list of solutions to the problems that every DBA faces regularly.

As MySQL is improving fast with the MySQL 8.0 …

Mobile World Congress (MWC), the world’s leading event is all set to unite the global mobile and telecoms industry in Barcelona, Spain from 27 February – 2 March 2023. In this framework, Codership is glad to announce that it has been selected by the European Innovation Council to join the EIC Pavilion. The 20 most promising EIC-funded SMEs, startups and scale ups have an unprecedented opportunity to impress the international audience with their game-changing innovations and establish business partnerships with like-minded counterparts.

The EIC Pavilion will feature a wide variety of extraordinary innovations in crucial sectors, such as Artificial Intelligence, Robotics, Machine Learning and IoT, among others. From interactive sessions and expert panel …

When it comes to writing database integration tests with Spring Boot, there are two options: an in-memory database or Testcontaienrs. As we already covered Testing Spring Data Repositories with H2 [...]

The post Spring Boot MySQL integration tests with Testcontainers appeared first on Geeky Hacker.

MySQL Database Service supports migrations from a live on-premises MySQL 8.0 database to a MySQL DB system on Oracle Cloud Infrastructure (OCI) in almost real-time using replication.

Introduction/TLDR:

We are considering changing EXPLAIN in Percona Server for MySQL to require less privileges for providing execution plans for INSERT/UPDATE/DELETE statements (and possibly changing the behavior for EXPLAIN SELECT as well), to make it more convenient and safer to use with monitoring and query analysis tools. We would like to get feedback from the Community about the different approaches for achieving this.

The problem:

Running EXPLAIN is a great way to understand how complex SQL statements are executed. So it is natural that monitoring and query analysis tools utilize EXPLAIN for these purposes.

However, there is a problem for cases when INSERT/UPDATE/DELETE statements need to be explained. Running EXPLAIN for these statements, a read-only operation, requires the same privileges as running the original statements …

Given a table named tbl with one million entries, we want to select a random row from this table, fast. Our table definition looks like this:

create table tbl (
    id INTEGER NOT NULL,
    d VARCHAR(200) NOT NULL,
    INDEX(id)
);

Dense id space

We can generate some test data using a recursive CTE:

mysql> set cte_max_recursion_depth = 100000;
mysql> insert into tbl 
    -> with recursive c(n, u) as (
    ->   select 1, uuid() 
    -> union all
    ->   select n+1, uuid() from c where n < 100000
    -> ) select * from c ;

The Recursive CTE will generate 100k pairs of (number, uuid()). The initial row is defined in the upper row of the UNION, each subsequent row builds recursively on top of that, by simply counting …