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MariaDB High Performance

You're reading from   MariaDB High Performance Familiarize yourself with the MariaDB system and build high-performance applications

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Product type Paperback
Published in Sep 2014
Publisher
ISBN-13 9781783981601
Length 298 pages
Edition 1st Edition
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Author (1):
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Pierre Mavro Pierre Mavro
Author Profile Icon Pierre Mavro
Pierre Mavro
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Table of Contents (13) Chapters Close

Preface 1. Performance Introduction FREE CHAPTER 2. Performance Analysis 3. Performance Optimizations 4. MariaDB Replication 5. WAN Slave Architectures 6. Building a Dual Master Replication 7. MariaDB Multimaster Slaves 8. Galera Cluster – Multimaster Replication 9. Spider – Sharding Your Data 10. Monitoring 11. Backups Index

The binlogs cache


The binlogs cache has been split into two versions, which are as follows:

  • Transactional cache

  • Nontransactional cache (introduced in version 5.5)

Both caches can be tuned, and their usage depends on the engine you're using. For example, InnoDB/XtraDB are transactional engines, while MyISAM is a nontransactional engine. There is, of course, no sense in tuning a transactional cache if you're only using the MyISAM engine, and vice versa. By the way, the transactional cache shouldn't move if you're not using it.

Binlogs are mandatory for replication systems. If the cache is not correctly used, the disk will be used and slowdowns are felt. So, the first thing to do is to check the correct usage of that cache.

Binlogs for transactional caches

For transactional caches, you need to check the global values:

MariaDB [(none)]> show global status like 'Binlog_cache%';
+-----------------------+-------+
| Variable_name         | Value |
+-----------------------+-------+
| Binlog_cache_disk_use...
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