MySQL DBA Archives

Tips and Tricks for reducing Leaf Block Contention happening to InnoDB

Leaf block contention in InnoDB tables can significantly impact the performance of your MySQL database, especially under high concurrency. This situation typically occurs when multiple transactions are trying to modify or lock rows in the [...]

Understanding MySQL’s Thread-Based Architecture: Internal Workings, Connection Handling, and Performance Optimization

Understanding how MySQL threads work internally is crucial for comprehending MySQL's performance and behaviour under different workloads. MySQL utilizes threads to handle various tasks, including client connections, query execution, and system maintenance. Let's dive into [...]

Expert Guide to MySQL Performance Troubleshooting: Best Practices and Optimization Techniques

Troubleshooting MySQL for performance involves a systematic approach to identify bottlenecks and inefficiencies in the database system. Here is a detailed guide outlining the principles of effective MySQL performance troubleshooting: 1. Establish Baseline Performance Metrics 2. Identify [...]

Comprehensive MySQL Health Check Guide: Scripts and Strategies for Optimal Database Performance

Performing regular health checks on your MySQL installation is vital for ensuring optimal performance, security, and reliability. A comprehensive health check involves various aspects of the MySQL database, from performance metrics to security settings. Below [...]

Optimizing Join Methods and Join Orders in MySQL

Introduction In MySQL, the optimal join methods and join orders are crucial for query performance, especially when dealing with large datasets. The efficiency of a join operation largely depends on how MySQL processes the data [...]

Monitoring Query Memory Consumption in MySQL with Performance Schema

Introduction Monitoring memory consumption by queries in MySQL using the Performance Schema is a vital aspect of database performance tuning. The Performance Schema, available in MySQL, provides detailed insights into how memory is allocated and [...]

Troubleshooting WRITE Performance by configuring MySQL 8 Group Replication

Introduction Misconfigured MySQL 8 Group Replication can significantly impact WRITE performance, creating bottlenecks that degrade the overall efficiency of the database cluster. Understanding how these misconfigurations affect performance is crucial for maintaining a high-performing replication [...]

How Transparent Huge Pages negatively influence MySQL Server Performance

Introduction Transparent Huge Pages (THP) are a feature in modern Linux kernels intended to improve performance by reducing the overhead of memory management for large processes. However, THP can negatively impact the performance of MySQL [...]

Seamlessly Switching MySQL Replication Modes: Transitioning Between GTID and Non-GTID Without Downtime

Introduction Changing the mode of replication in MySQL from and to GTID (Global Transaction Identifier) mode without taking the server offline requires careful planning and execution. The process involves ensuring that all current transactions are [...]

Optimizing MySQL Performance: Best Practices for Effective Indexing and Function Usage

Introduction Implementing functions on MySQL indexes, often referred to as using functional or expression-based indexes, is a topic with some nuanced considerations. Here's why this practice can be problematic and some tips and tricks for [...]

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