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MySQL 8 Cookbook

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

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Product type Paperback
Published in Jan 2018
Publisher
ISBN-13 9781788395809
Length 446 pages
Edition 1st Edition
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Author (1):
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Karthik Appigatla Karthik Appigatla
Author Profile Icon Karthik Appigatla
Karthik Appigatla
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Table of Contents (15) Chapters Close

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

Introduction


As explained in Chapter 6, Binary Logging, replication enables data from one MySQL database server (the master) to be copied to one or more MySQL database servers (the slaves). Replication is asynchronous by default; slaves do not need to be permanently  connected  to receive updates from the master. You can configure to replicate all databases, selected databases, or even selected tables within a database.

In this chapter, you will learn how to set up traditional replication; replicate selected databases and tables; and set up multi-source replication, chain replication, delayed replication, and semi-synchronous replication.

 

On a high level, replication works like this: all DDL and DML statements executed on a server (master) are logged into binary logs, which are pulled by the servers connecting to it (called slaves). The binary logs are simply copied to the slaves and are saved as relay logs. This process is taken care of by a thread called IO thread. There is one more thread...

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