A MySQL sub-database and sub-table php class

03 Jun 2023

1. Why do we need to separate databases and tables? The evolution of the database architecture. In the beginning, most projects used a single-machine database. As the server traffic became larger and larger, we faced more and more requests. We separated the reading and writing of the database and used Multiple slave database copies (Slave) are responsible for reading, and the master database (Master) is responsible for writing. The master and slave realize data synchronization and update through master-slave replication to keep the data consistent. The slave database can be expanded horizontally, so more read requests are not a problem. But when the user level increases and write requests become more and more, how to ensure that the database load is sufficient? Adding a Master cannot solve the problem because the data needs to be consistent and the write operation requires synchronization between the two masters, which is equivalent to duplication.

23 Aug 2017

This article mainly introduces the operation and summary of MyBatis' implementation of Mysql database sub-database and table. Friends in need can refer to it.

30 Jul 2023

How to perform data sub-database, table and horizontal split in MySQL? In the era of big data, as the amount of data continues to grow, the database design of a single database and a single table can no longer meet the needs of large-scale data storage and processing. Therefore, sharding databases, sharding tables and horizontal splitting have become a common solution. This article will introduce how to perform data sharding, table splitting and horizontal splitting in MySQL, and provide corresponding code examples. 1. Data sub-database and table sub-database In the sub-database operation, the original database is divided into multiple sub-databases according to certain rules. Each sub-database

13 Jul 2016

A simple and practical php operation mysql database class, simple and practical mysql. A simple and practical PHP class to operate mysql database, simple and practical mysql This article describes a simple and practical PHP class to operate mysql database. Share it with everyone for your reference. Details are as follows

29 Jul 2016

: PHP sub-database and sub-table hash algorithm: Copy the code code as follows: // Sub-database and sub-table algorithm function calc_hash_db($u, $s = 4) { $h = sprintf("%u", crc32($u)); $h1 = intval(fmod($h, $s)); return $h1; } for($i=1;$i<100;$i++) { echo calc_hash_db($i); echo "<br>"; } f

23 May 2023

PHP is a commonly used programming language used to develop web applications. In modern web applications, data processing is a very important part. With the increasing use of data in web applications, data sharding and table sharding have become one of the basic technologies for data processing. In PHP applications, data sharding and table sharding are also a very important topic. Below we will introduce in detail the importance and implementation methods of data sharding and table sharding in PHP. 1. The importance of data sub-database and table sub-database There are two main methods of data sub-database and sub-table.