MySQL 8 Query Performance Tuning

A Systematic Method for Improving Execution Speeds

Jesper Wisborg Krogh (Autor)

Buch | Softcover

965 Seiten

2020 | 1st ed.
Apress (Verlag)
978-1-4842-5583-4 (ISBN)

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Identify, analyze, and improve poorly performing queries that damage user experience and lead to lost revenue for your business. This book will help you make query tuning an integral part of your daily routine through a multi-step process that includes monitoring of execution times, identifying candidate queries for optimization, analyzing their current performance, and improving them to deliver results faster and with less overhead. Author Jesper Krogh systematically discusses each of these steps along with the data sources and the tools used to perform them.
MySQL 8 Query Performance Tuning aims to help you improve query performance using a wide range of strategies. You will know how to analyze queries using both the traditional EXPLAIN command as well as the new EXPLAIN ANALYZE tool. You also will see how to use the Visual Explain feature to provide a visually-oriented view of an execution plan. Coverage of indexes includes indexing strategies and index statistics, and you will learn how histograms can be used to provide input on skewed data distributions that the optimizer can use to improve query performance. You will learn about locks, and how to investigate locking issues. And you will come away with an understanding of how the MySQL optimizer works, including the new hash join algorithm, and how to change the optimizer’s behavior when needed to deliver faster execution times. You will gain the tools and skills needed to delight application users and to squeeze the most value from corporate computing resources.

What You Will Learn

Monitor query performance to identify poor performers
Choose queries to optimize that will provide the greatest gain
Analyze queries using tools such as EXPLAIN ANALYZE and Visual Explain
Improve slow queries through a wide range of strategies
Properly deploy indexes and histograms to aid in creating fast execution plans
Understand and analyze locks to resolve contention and increase throughput

Who This Book Is For
Database administrators and SQL developers who are familiar with MySQL and need to participate in query tuning. While some experience with MySQL is required, no prior knowledge of query performance tuning is needed.

Jesper Wisborg Krogh has worked with MySQL databases since 2006 both as an SQL developer, a database administrator, and for more than eight years as part of the Oracle MySQL Support team. He has spoken at MySQL Connect and Oracle OpenWorld on several occasions, and addition to his books, he regularly blogs on MySQL topics and has authored around 800 documents in the Oracle Knowledge Base. He has contributed to the sys schema and four Oracle Certified Professional (OCP) exams for MySQL 5.6 to 8.0. He earned a PhD in computational chemistry before changing to work with MySQL and other software development in 2006. Jesper lives in Sydney, Australia, and enjoys spending time outdoors walking, traveling, and reading. His areas of expertise include MySQL Cluster, MySQL Enterprise Backup, performance tuning, and the Performance and sys schemas.

Part I. Getting Started.- 1. MySQL Performance Tuning.- 2. Query Tuning Methodology.- 3. Benchmarking with Sysbench.- 4. Test Data.- Part II. Sources of Information.- 5. The Performance Schema.- 6. The sys Schema.- 7. The Information Schema.- 8. SHOW Statements.- 9. The Slow Query Log.- Part III. Tools.- 10. MySQL Enterprise Monitor.- 11. MySQL Workbench.- 12. MySQL Shell.- Part IV. Schema Considerations and the Query Optimizer.- 13. Data Types.- 14. Indexes.- 15. Index Statistics.- 16. Histograms.- 17. The Query Optimizer.- 18. Locking Theory and Monitoring.- Part V. Query Analysis.- 19. Finding Candidate Queries for Optimization.- 20. Analyzing Queries.- 21. Transactions.- 22. Diagnosing Lock Contention.- Part VI. Improving the Queries.- 23. Configuration.- 24. Change the Query Plan.- 25. DDL and Bulk Data Load.- 26. Replication.- 27. Caching.

Erscheinungsdatum	20.03.2020
Zusatzinfo	135 Illustrations, black and white; XXXVII, 965 p. 135 illus.
Verlagsort	Berkley
Sprache	englisch
Maße	178 x 254 mm
Themenwelt	Informatik ► Datenbanken ► MySQL
Themenwelt	Mathematik / Informatik ► Informatik ► Software Entwicklung
Schlagworte	EXPLAIN PLAN • High Performance MySQL • histograms • indexes • locks • Monitoring • MySQL Enterprise Monitor • MySQL Performance Schema • MySQL Performance Tuning • MySQL Shell • MySQL Workbench • Optimizing SQL Statements • Query Digests • query optimization • Query Optimizer • Query Performance Tuning • Query Plan • SQL Tuning • Transactions and Locks • Visual Explain
ISBN-10	1-4842-5583-6 / 1484255836
ISBN-13	978-1-4842-5583-4 / 9781484255834
Zustand	Neuware