MySQL storage engine selection from the perspective of performance and stability: Advantages of notebook album storage engine

Looking at MySQL storage engine selection from the perspective of performance and stability: Advantages of notebook album storage engine

Introduction:
MySQL is an open source relational database management system that is widely used in various types of applications. In MySQL, the storage engine is a very important part of the database system. It determines the characteristics of how data is stored on disk, read and write performance, and data stability. This article will focus on MySQL's notebook book storage engine and explore its advantages in performance and stability.

1. What is a notebook album storage engine?
The notebook album storage engine (or NDB storage engine) is a high-availability and high-performance storage engine of MySQL. It is often used for large-scale applications running in distributed environments, such as telecommunications, finance, and e-commerce. The NDB storage engine uses memory-based data structures to accelerate data read and write operations, and achieves high availability through multi-node replication and fault tolerance mechanisms. The following are some advantages of NDB storage engine.

1. High performance
   NDB storage engine adopts an efficient memory storage structure, which can achieve very fast data reading and writing operations. Its data storage and indexing are based on main memory, which greatly improves the data access speed. In addition, the NDB storage engine also supports parallel queries and concurrent transaction processing, making full use of the computing power of multiple CPUs and multi-cores, further improving the overall performance of the database.

The following is a code example of a simple NDB storage engine:

CREATE TABLE `users` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL,
  `age` int(11) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=NDBCLUSTER;

2. High availability
   NDB storage engine supports multi-node replication and fault-tolerance mechanisms for data, providing Highly available data storage solution. By replicating data to different nodes, even if one node fails, the data can still be read and written through the other nodes. In addition, the NDB storage engine also provides automatic fault detection and automatic fault recovery functions to ensure that the system can automatically resume normal operation after a node failure.

The following is a simple replication configuration example of the NDB storage engine:

[mysqld]
ndbcluster
ndb-connectstring=192.168.0.1,192.168.0.2,192.168.0.3

3. Data consistency
   NDB storage engine uses MVCC (Multi-version Concurrency Control) )'s transaction isolation mechanism can provide highly concurrent transaction processing capabilities and ensure the consistency of data during the reading and writing process. The MVCC mechanism avoids data conflicts and serialization problems by performing version control on the data being read or written while copying the data, and greatly improves the concurrency performance of the database.

The following is a simple NDB storage engine transaction example:

START TRANSACTION;
INSERT INTO `users` (`name`, `age`) VALUES ('John', 25);
COMMIT;

Summary:
NDB storage engine is a high-performance, high-availability storage engine for MySQL. Applications in distributed environments have great advantages. It provides a fast, reliable and consistent database solution through features such as memory-based storage structures, data replication and fault tolerance mechanisms, and multi-version concurrency control. When choosing a MySQL storage engine, you can consider whether to use the NDB storage engine based on the characteristics and needs of the application to achieve better performance and stability.

References:

• MySQL official documentation: https://dev.mysql.com/doc/ndb-cluster/
• MySQL Chinese Community: https: //www.mysql.cn/

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