MySQL Performance
Linear Trees in InnoDB
Introduction In InnoDB, a linear tree is a type of data structure used for indexing and searching data. Linear trees are also known as B+ trees. The key characteristic of a linear tree is that […]
MySQL Internals
MySQL Performance
Explaining the MySQL Slow Query Log – How to Read and Interpret Slow Query Log?
The MySQL Slow Query Log is a feature that logs SQL statements that exceed a certain threshold of execution time. This log can be used to identify slow queries and to optimize their performance. Here […]
MySQL Performance
How to implement bulk transactions with RESTful CRUD API using MySQL and Spring Boot?
Implementing bulk transactions with a RESTful CRUD API using MySQL and Spring Boot can be done by using the Spring Data JPA framework and its EntityManager class. Here are the general steps to implement bulk […]
MySQL Troubleshooting
Detailed explanation for higher than expected Disk I/O on MySQL Hot Tables
MySQL Hot Tables are tables that experience a high volume of traffic and activity, and can quickly become a bottleneck for database performance. When you see higher than expected disk I/O on MySQL Hot Tables, […]
MySQL Performance
How to prevent Replication Break in MySQL while adding INDEX/COLUMN using PT-OSC (pt-online-schema-change)?
When adding indexes or columns in MySQL, it is important to be aware of the potential for replication to break. One way to prevent this is to use a tool like pt-online-schema-change from the Percona […]
MySQL Internals
How MySQL 8 reduced contention for metadata locks?
MySQL 8 introduced several improvements to reduce contention for metadata locks, which are locks that are used to manage access to database objects such as tables and indexes. Here are a few ways in which […]
MySQL Performance
How invisible indexes in MySQL 8 works?
In MySQL 8, invisible indexes are a feature that allows you to create an index without it being used by the optimizer. This can be useful in situations where you want to test the impact […]
MySQL Internals
What happens to uncommitted transactions in MySQL if the server crashes after the update?
In MySQL, if the server crashes after an update and the transaction was not committed, the changes made by the transaction will be rolled back during the crash recovery process. This is because MySQL uses […]
MySQL Internals
Impact of ordered vs. random index insertion in InnoDB
The impact of ordered versus random index insertion in InnoDB depends on several factors, including the size and complexity of the table, the frequency of inserts, and the workload of the database. Ordered index insertion […]
MySQL Internals
How to Monitor InnoDB Mutex Waits in MySQL 8 Using Performance Schema?
InnoDB Mutexes are synchronization objects used by the InnoDB storage engine to ensure that different threads can access shared resources safely. Mutex waits can be a bottleneck for performance in MySQL 8, as they can […]