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Advanced MySQL 8

You're reading from   Advanced MySQL 8 Discover the full potential of MySQL and ensure high performance of your database

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Product type Paperback
Published in Jan 2019
Publisher
ISBN-13 9781788834445
Length 286 pages
Edition 1st Edition
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Authors (3):
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Birju Shah Birju Shah
Author Profile Icon Birju Shah
Birju Shah
Eric Vanier Eric Vanier
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Eric Vanier
Tejaswi Malepati Tejaswi Malepati
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Tejaswi Malepati
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Table of Contents (13) Chapters Close

Preface 1. Introduction 2. MySQL 8's New Features FREE CHAPTER 3. Indexing Your Data for High Performance 4. Advanced Data Techniques for Large Queries 5. MySQL Data Dictionary in MySQL 8.0 6. MySQL Server Settings 7. Group Replication in MySQL 8.0 8. InnoDB Cluster in MySQL 8.0 9. Monitoring Your Large Distributed Databases 10. Authentication and Security Management with MySQL 8.0 11. Advanced MySQL Performance Tips and Techniques 12. Other Books You May Enjoy

What impact does an index have on MySQL performance?

Although adding indexes can help optimize the performance of your queries, adding indexes has a significant cost on MySQL performance.

In fact, when an index is added to a table, the performance of the writing is affected. Let me show you this from the music_album table. By examining the definition of the current table, you will notice a large number of indexes:

Table: music_album

By performing a simple benchmarking test, we can test the insertion rate of the current music album table with the original definition that included fewer indexes:

The following are the test results:

Did you notice that inserting data into the table with additional indexes was four times slower?

This test is quite basic and there are, of course, several other elements that can negatively affect insertion speed, but it provides a clear example of...

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