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  1914

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  1736

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  2318

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  1238

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  705

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  3379

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  1220

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  1141

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  2154

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  538

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  3444

Article Introduction：Foreign key is a data integrity constraint in MySQL, which ensures that the data of the sub-table is consistent with the main table by referencing the primary key column of the main table. The working principle of foreign code is as follows: ensure that the main table data referenced by the subtable exists. Cascade deletion: When the main table record is deleted, the related records of the sub-table are deleted in cascade. Cascade update: When the primary key of the main table is updated, the related records of the sub-table are cascade updated.

2024-04-29 comment 0  374

Article Introduction：Data partitioning refers to the function of dividing a table into several parts, each part can store different content. In PHP, large data tables can be better managed and efficiently manipulated using data partitioning functions. This article will introduce how to use data partitioning functions in PHP. 1. What is the data partition function? The data partition function is a function provided by MySQL database to divide a data table into multiple sub-tables. When using the data partition function, a large table can be divided into several sub-tables. The data content of each sub-table can be different, and the system can

2023-05-19 comment 0  1288

Article Introduction：1. Read the xlsx table: The original content of pd.read_excel() is as follows: a) Read the data of the nth Sheet (sub-table, you can view or add or delete sub-tables in the lower left) importpandasaspd# The path path that needs to be modified each time ="test.xlsx"#sheet_name defaults to 0, that is, reading the data of the first sheet sheet=pd.read_excel(path,sheet_name=0)print(sheet)"""Unnamed:0name1name2name30row112.0

2023-05-08 comment 0  3429

Article Introduction：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.

2023-06-03 comment 0  1167

Article Introduction：As the amount of data continues to grow, the traditional single-table database design can no longer meet the demand. For large-scale data processing, sub-table design has been widely adopted and has become an important means to optimize system performance. Oracle database is one of the commonly used databases for managing large-scale data. It is very important and valuable to implement sub-table design for Oracle database. This article will introduce how to use PHP to implement Oracle database table partitioning. What is sub-table design? Table splitting design is a method of splitting a large table into multiple small tables for management.

2023-05-16 comment 0  806

Article Introduction：As data volumes continue to grow, storing and querying data in MySQL becomes increasingly difficult. Partition table is a function of MySQL database, which can solve the problem of large data volume and slow query speed. This article will introduce the partition table in MySQL in detail and provide several optimization tips. 1. What is MySQL partition table? MySQL partition table is a function introduced after MySQL version 5.1. It allows a large table to be divided into several small sub-tables. The data of each sub-table can be separated, stored and stored according to specified conditions.

2023-06-14 comment 0  2061

Article Introduction：Understanding the Error: "Every Derived Table Must Have Its Own Alias"When executing a MySQL query involving nested derived tables (sub-queries),...

2024-12-15 comment 0  860

Article Introduction：Handling IN Sub-Queries in LINQ to SQLUtilizing IN sub-queries in LINQ to SQL can be an efficient way to correlate data from multiple tables....

2024-12-27 comment 0  266

Article Introduction：How to set up foreign keys? Create main table and sub-table. Open the phpMyAdmin dashboard. Select the main table. Open the "Structure" tab. Add a foreign key column and select the related column in the child table. Select the foreign key type (such as "CASCADE"). save Changes.

2024-04-07 comment 0  968