Article Introduction：: 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

2016-07-29 comment 0  2054

Article Introduction：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.

2023-05-23 comment 0  1933

Article Introduction：PHP sub-database and table hash algorithm. Copy the 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;$i100;$i++) {

2016-07-21 comment 0  1486

Article Introduction：With the rapid development of the Internet and the continuous expansion of business scale, more and more enterprises are beginning to adopt microservice architecture. As an excellent microservice framework, SpringCloud not only implements service splitting and management, but also provides a series of efficient solutions. Database and table sharding is one of the important means to ensure system stability and scalability in times of high concurrency. This article will introduce how to implement sharding of databases and tables under the SpringCloud microservice architecture. 1. The principle of sub-database and sub-table. Before sub-database and sub-table, we first come

2023-06-22 comment 0  1751

Article Introduction：Table sharding is a good way to spread the pressure on the database. The most straightforward meaning of table partitioning is to divide a table structure into multiple tables, and then they can be placed in the same library or in different libraries. Of course, you first need to know under what circumstances you need to divide the table. Personally, I think that when the number of records in a single table reaches millions to tens of millions, it is necessary to use sub-tables. 1. Classification of sub-tables 1> Vertical sub-table artificially divides the content that could be in the same table into multiple tables. (The so-called original means that according to the requirements of the third paradigm of relational database, they should be in the same table.) Reason for splitting tables: According to

2017-03-11 comment 0  1009

Article Introduction：Title: Details of MySQL sub-database and sub-table backup script [root@db02scripts]#cat/server/scripts/Store_backup.sh#!/bin/shMYUSER=rootMYPASS=xuliangweiSOCKET=/data/3306/mysql.sockMYLOGIN=”mysql-u $MYUSER-p$MYPASS-S$SOCKET”MYDUMP=”mysqldump-u$MYUSER-p$MYPASS-S$SOCKET-B”DATABASE=”$($MYLOGIN-e“

2023-05-27 comment 0  1148

Article Introduction：Sub-database, sub-table and distributed transaction processing methods in PHP flash sale system With the rapid development of the e-commerce industry, flash sale activities have become a common means to increase sales and increase user stickiness. However, a large number of users flooding into the system at the same time can easily lead to system performance bottlenecks and database crashes. In this case, the use of sub-databases, sub-tables and distributed transaction processing is the key to improving system performance and stability. 1. Sub-database and sub-table Database splitting In the traditional relational database environment, data is split into different databases according to certain rules to achieve data separation.

2023-09-19 comment 0  1247

Article Introduction：With the continuous development of Internet applications and the increasing amount of data, the traditional single database and single table architecture can no longer meet the needs of large-scale applications. At the same time, the efficiency of data storage and processing has also become a bottleneck. Therefore, sharding databases, sharding tables and horizontal expansion have become the preferred solutions for many enterprises. In this trend, Go language has also become one of the popular solutions. 1. The definition of sub-database and sub-table. Sub-database and sub-table refers to splitting a database into multiple independent databases and creating the same table structure in different databases so that each database has

2023-06-01 comment 0  2337

Article Introduction：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

2023-07-30 comment 0  2159

Article Introduction：How to use thinkphp sub-table? . How to use thinkphp table partitioning. I have preset 10 tables, namely table_1, table_2, table_3....table_10. Partition is set in the Model: protected $partition = array('field' => 'id','ty

2016-07-13 comment 0  924

Article Introduction：Project experience sharing to achieve sub-database, sub-table and horizontal expansion through MySQL development Introduction: With the advent of the big data era, the explosive growth of data volume has made traditional stand-alone databases unable to meet business needs. In order to solve the performance problems of data storage and query, sharding databases, sharding tables and horizontal expansion have become very popular technologies nowadays. This article will share some project experiences of implementing sub-database, sub-table and horizontal expansion through MySQL development, hoping to inspire developers who also face this challenge. 1. Background introduction Our team is an e-commerce platform

2023-11-02 comment 0  723

Article Introduction：1. Why is it necessary to sub-database and sub-table? If a website's business develops rapidly, the traffic of the website will also increase, and the pressure on data will also follow. For example, for e-commerce systems, the Double Eleven promotion will put a lot of pressure on order data. , with hundreds of thousands of concurrent Tps. If the traditional architecture (one master and multiple slaves) is used, the main database capacity will definitely not be able to meet such a high Tps. The business is getting bigger and bigger, and the single table data exceeds the capacity supported by the database. Persistent disk IO , the traditional database performance bottleneck, the product manager business must do, change the program, database knife segmentation optimization. The number of database connections is not enough and the database needs to be divided. The amount of data in the table is large, and the query performance is still very low after optimization, so it needs to be divided. 2. What is sub-database and sub-table? The sub-database and sub-table solution is for relational databases.

2023-06-02 comment 0  3394

Article Introduction：How to use MTR to test and verify the sub-database and sub-table scheme. Sub-database and sub-table are a commonly used data storage scheme in modern distributed database technology. It achieves data expansion and expansion by dispersing database data into multiple databases. Load balancing. However, the correctness, performance and reliability of the sub-database and table scheme are the keys to testing and verification. MTR (MySQLTestRun) is a powerful testing tool officially provided by MySQL, which can be used to automate testing and verify the correctness and performance of the database system.

2023-07-14 comment 0  1232

Article Introduction：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.

2017-08-23 comment 0  2614

Article Introduction：Detailed explanation of ThinkPHP6 multi-database support: Implementing data sub-database and sub-table With the rapid development of the Internet, the amount of data continues to increase, and a single database is often unable to meet business needs. In order to solve this problem, we can use the multi-database support of the ThinkPHP6 framework to implement data sharding and table sharding to optimize database performance and improve system scalability. In ThinkPHP6, multi-database support is implemented through configuration files. We need to first configure the configuration file (config/data

2023-08-12 comment 0  3492

Article Introduction：In website development, tables are often a common form of displaying data. However, sometimes we need to embed sub-rows in the table to display detailed data. If we don't want all of these subrows to be expanded initially, then we need to implement a method that hides the subrows and shows them when needed. Fortunately, jQuery provides a very convenient method to help us achieve this function. Next, we will use some simple code to implement a jQuery table that can hide and display sub-rows. ## Required HTML

2023-04-26 comment 0  549

Article Introduction：MySQL database sub-database sub-table solution, once the database is too large, especially when writes are too frequent and it is difficult to be supported by one host, we will still face expansion bottlenecks. At this time, we must find other technical means to solve this bottleneck, which is the bad data segmentation technology we will introduce in this chapter.

2018-07-24 comment 0  3849

Article Introduction：❝Use MyCat to implement MySQL's sub-database and table. Those who have not implemented it or have not understood it can take a look. ❞Foreword I have written an article about mysql sub-database and table before. That article is just for everyone. I have an idea, but there are many details in the reply that are not mentioned. So Kaka published this article. This article only focuses on one of the details, such as how to implement MySQL's sub-database and table. This article uses the database middleware MyCat to implement it.

2020-08-16 comment 0  2028

Article Introduction：Solution to the problem that the sub-sheets below the table are not displayed: 1. Open Tools -> Options, and then check the worksheet label; 2. Select Sheet3, right-click and select Unhide, then select Sheet1 and Sheet2 and click OK.

2021-01-05 comment 0  39217