MySQL 5.7.12: High Performance Security Upgrades（mysql5.7.12）

MySQL has long been known as the industry standard for Relational Database Management Systems (RDBMS), and Version 5.7.12 of MySQL is no exception. It provides powerful tools for managing and accessing data in an efficient manner, and the most recent version comes with an array of security-focused features to help protect your data.

To ensure both performance and security, MySQL 5.7.12 contains a number of updates and improvements. It implements several new security options and updates, including SHA2 authentication, a password-validation plugin, XML update logging, and multi-source replication. It also includes a new storage engine called InnoDB, which is optimized for high-performance and high-security applications. Additionally, the latest version includes a much-improved query optimizer and optimizer hints.

SHA2 authentication is a recent advanced authentication method that is implemented in MySQL 5.7.12. It increases security by encrypting usernames and passwords, making it much harder for malicious actors to gain access to your system. The password-validation plugin ensures that user passwords are properly configured and regularly updated, protecting against attacks from weak passwords. Additionally, the XML update logging and multi-source replication features provide granular control and tracking of database changes.

InnoDB is a new, high-performance storage engine that comes with MySQL 5.7.12, and it provides numerous benefits over the traditional MyISAM storage engine. For example, it provides better crash recovery, row-level locking, and more advanced features such as ACID compliance, foreign keys, and multi-version concurrency control. It also provides better performance when running multiple queries simultaneously, which makes MySQL 5.7.12 suitable for large-scale applications.

MySQL 5.7.12 also includes a much improved query optimizer and optimizer hints, which allow developers to tweak the performance of their queries. The query optimizer can be used to modify the execution plans of queries to increase performance. Furthermore, the optimizer hint system allows developers to provide additional parameters and instructions to the query optimizer to further customize their query performance.

Overall, MySQL 5.7.12 is a solid database platform that provides powerful tools for managing and accessing data with enhanced security. From advanced authentication and password-validation plugins to a more powerful query optimizer and storage engine, MySQL 5.7.12 is an excellent choice for developers looking for improved security and performance.