MySQL Advanced Tutorial: InnoDB Parameters to Optimize!
In this sql tutorial about mysql server we will show you what parameters you should optimize when working with the InnoDB storage engine in MySQL server. The parameters we will help you optimize in this sql tutorial are as follows:
1) skip-innodb: this mysql tutorial will tell you that if you want to disable the InnoDB storage engine in MySQL server, you should modify your my.cnf file and add skip-innodb under the [mysqld] section, or set the –innodb option to OFF upon startup.
2) innodb_buffer_pool_instances: as of MySQL Server installation version 5.5, there is an ability to divide the buffer pool into multiple segments and you can modify the innodb_buffer_pool_instances parameter to achieve that.
3) InnoDB isolation levels: any mysql advanced tutorial should tell you that InnoDB allows users to choose from four isolation levels: READ UNCOMMITTED, READ COMMITTED, REPEATABLE READ, and SERIAZABLE.
4) innodb_optimize_fulltext_only: you should also know that if you’re working with a FULLTEXT sql index in MySQL server, you should consider turning the innodb_optimize_fulltext_only variable to ON. Your OPTIMIZE TABLE queries should be faster.
5) innodb_strict_mode: this variable affects the handling of syntax errors for CREATE TABLE, ALTER TABLE and CREATE INDEX operations in mysql server: disabling this variable might solve “Row size too large” errors. To disable strict mode, set innodb_strict_mode to OFF.
6) innodb_read_only: when this setting is enabled, you can query InnoDB tables where the MySQL server data directory is on read-only media.
Finally, to make your mysql server engine InnoDB engage more cores leave the innodb_thread_concurrency option at its default value 0, then set both of the innodb_read_io_threads and innodb_write_io_threads options to their maximum values of 64 and restart MySQL Server, Percona Server, or MariaDB (whichever you’re using.) This should engage more cores.
Here are some mysql faqs with answers should you ever need those sql interview questions and answers for your next sql interview:
Q: How to protect against SQL injection?
A: Don’t pass user input into a SQL query. You really don’t need to pass a mysql advanced tutorial to know this – it’s that simple!
Q: What types of SQL indexes exist?
A: There are B-Tree indexes, R-Tree indexes, hash indexes, covering indexes, clustered indexes, multicolumn or composite SQL indexes, and prefix indexes.
Q: What is the most popular type of a mysql index?
A: A B-tree sql index is the most popular type of a mysql index.
Q: What is the file to adjust mysql server configuration?
A: The mysql my.cnf file on Linux or the mysql my.ini file on Windows is what you should look into. If needed, we’ll make a separate mysql tutorial for beginners on how it works. A mysql tutorial covering which storage engine – myisam vs innodb – to choose is available here: https://youtube.com/shorts/MpVWcYsJqn4
Q: Is there a sql full course or any mysql tutorial that would cover mysql storage engines in more detail in all complex aspects?
A: Not that we know of, but if needed, we’ll make a sql course talking about everything: sql basics, sql queries, sql vs nosql, sql for data analysis, etc.
Q: Is there a big data tutorial for those looking to work with big data on mysql server?
A: Yes, it’s available here: https://youtube.com/shorts/GurccdgcjL0
Q: I’ve heard that MyISAM performs row level locking?
A: No, that’s a common misconception.
Q: MyISAM vs InnoDB performance – which one is better and why?
A: InnoDB – all of the features that were available in MyISAM are now available in InnoDB.
Q: I want to switch MyISAM to InnoDB – what sql query should I use? Is there a sql tutorial that would help me with this?
A: Use this query – it will give you a list of MyISAM-based tables with a SQL query that you can copy-paste to update all of your MyISAM-based tables to InnoDB (replace “sql tutorial for beginners” with your database name):
SELECT CONCAT(‘ALTER TABLE ‘,TABLE_NAME,’ ENGINE=InnoDB;’) FROM information_schema.tables WHERE ENGINE=’MyISAM’ AND table_schema = ‘sql tutorial for beginners’;
We’ve also made other videos about database performance issues, database performance tuning, and database performance testing.
One of our videos about database performance monitoring can be found here: https://youtube.com/shorts/lyy6VnBMPLU
A video depicting database slowness reasons and quickly explaining how to overcome database slowness can be found here: https://youtube.com/shorts/beLkSf0_Ms4
secure-file-priv MySQL video: https://youtube.com/shorts/nYeD9-lPj_M
If you want to learn more about SQL injection, how can impact your applications and how to protect yourself consider subscribing, and until next time.
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