Book Image

Advanced MySQL 8

By : Eric Vanier, Birju Shah, Tejaswi Malepati
Book Image

Advanced MySQL 8

By: Eric Vanier, Birju Shah, Tejaswi Malepati

Overview of this book

Advanced MySQL 8 teaches you to enhance your existing database infrastructure and build various tools to improve your enterprise applications and overall website performance. The book starts with the new and exciting MySQL 8.0 features and how to utilize them for maximum efficiency. As you make your way through the chapters, you will learn to optimize MySQL performance using indexes and advanced data query techniques for large queries. You will also discover MySQL Server 8.0 settings and work with the MySQL data dictionary to boost the performance of your database. In the concluding chapters, you will cover MySQL 8.0 Group Replication, which will enable you to create elastic, highly available, and fault-tolerant replication topologies. You will also explore backup and recovery techniques for your databases and understand important tips and tricks to help your critical data reach its full potential. By the end of this book, you’ll have learned about new MySQL 8.0 security features that allow a database administrator (DBA) to simplify user management and increase the security of their multi-user environments.
Table of Contents (13 chapters)
11
Advanced MySQL Performance Tips and Techniques

MySQL 8's support roles and history

In MySQL 8, there is one new feature that is well worth a special mention. Right on the MySQL server, you can now create roles, specify their privileges, and assign them to users. So, from now on, it will be an easy task for you because you will not need to remember which permissions a team X programmer needs, and whether a team QA must have Z privileges, and so on.

Let's take a concrete example:

To create a role, just run following command:

CREATE ROLE 'devops_developer', 'app_read', 'app_write';

Now give privileges to the role:

GRANT SELECT ON app_db.* TO 'app_read';

And, finally, share this role with a user:

GRANT 'app_read' TO 'read_username1'@'localhost', 'read_username2'@'localhost';

The other options available are as follows:

  • Mandatory...