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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 FREE CHAPTER 2. Using MySQL 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

Efficiently managing time to live and soft delete rows


RANGE COLUMNS is highly useful in managing time to live and soft delete rows. Suppose you have a application which specifies the expiry time of row (row to be deleted after it crosses the expiry time) and the expiry is varying.

Suppose the application can do the following types of inserts:

  • Insert persistent data
  • Insert with expiry

If the expiry is constant i.e all the rows inserted will be deleted after certain time, we can go with RANGE partitioning. But if the expiry is varying i.e some rows will be deleted in a week, some in a month, some in a year and some have no expiry, it is not possible to create partitions. In that case, you can use the RANGE COLUMNS partitioning explained below.

How it works...

We introduce a column called soft_delete which will be set by trigger. The soft_delete column will be part of range column partitioning.

Partitioning will be like (soft_delete, expires). The soft_delete and expires together controls which partition...

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