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MySQL 8 Cookbook

You're reading from MySQL 8 Cookbook Over 150 recipes for high-performance database querying and administration

Product type Paperback

Published in Jan 2018

Publisher

ISBN-13 9781788395809

Length 446 pages

Edition 1st Edition

Tools

MySQL

Concepts

Database Administration

Author (1):

Karthik Appigatla

View More author details

Table of Contents (15) Chapters

Preface

1. MySQL 8 - Installing and Upgrading

2. Using MySQL FREE CHAPTER

3. Using MySQL (Advanced)

4. Configuring MySQL

5. Transactions

6. Binary Logging

7. Backups

8. Restoring Data

9. Replication

10. Table Maintenance

11. Managing Tablespace

12. Managing Logs

13. Performance Tuning

14. Security

Checking index usage

In the preceding section, you learned about removing redundant and duplicate indexes. While designing an application, you might have thought about filtering a query based on a column and added index. But over a period of time, because of changes in the application, you might not need that index. In this section, you will learn about identifying those unused indexes.

There are two ways you can find unused indexes:

Using pt-index-usage (covered in this section)
Using sys schema (covered in the next section)

How to do it...

We can use the pt-index-usage tool from the Percona Toolkit to get the index analysis. It takes queries from the slow query log, runs the explain plan for each and every query,...

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Authors (1)

Karthik Appigatla

Karthik Appigatla

Karthik Appigatla is a highly reputed database architect and is very famous for performance tuning. He has been consulted by many companies all over the world for designing, performance tuning, building database infrastructure, and training. In his decade of experience, he has worked for companies such as Yahoo, Pythian, and Percona. Currently, he is working for LinkedIn, where he has innovated a new way of analyzing queries. He gave a talk about this at SRECon, Dublin in 2017.

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