Understand the underlying development principles of PHP: Caching technology and data storage optimization guide sharing

Understand the underlying development principles of PHP: Caching technology and data storage optimization guide sharing

In modern Web development, PHP, as a commonly used server-side language, is It is widely used in the development of various websites and applications. Understanding the underlying development principles of PHP, especially caching technology and data storage optimization, is crucial to improving website performance and user experience. This article will share some content about the underlying development principles of PHP and help readers understand the guidelines for caching technology and data storage optimization.

1. Understand caching technology

In web development, caching technology is a commonly used performance optimization method. Simply put, caching is the process of temporarily storing calculation results in memory or other fast storage to avoid repeated calculations. For PHP development, caching technology mainly has the following common applications:

1. Database query cache: In PHP development, database query is a common performance bottleneck. In order to reduce the number of database queries, caching technology can be used to cache query results. For example, store frequently queried data in memory to avoid repeated queries to the database.
2. Page caching: For some static or rarely changing pages, page caching technology can be used to save the page content in static files. When a user requests a page, static files are returned directly to avoid executing PHP code and database queries, thereby improving response speed.
3. Object caching: In PHP development, it is often necessary to instantiate a large number of objects, and the instantiation and destruction of objects consumes a large amount of resources. Object caching technology can be used to save instantiated objects in memory, and then retrieve them directly from memory when needed next time to avoid re-instantiation and improve performance.

2. Data Storage Optimization Guide

In addition to caching technology, data storage optimization is also the key to improving PHP application performance. The following are some guidelines for data storage optimization for readers’ reference:

1. Reasonable selection of database engines: MySQL is a commonly used database in PHP development, and MySQL has many different engines to choose from, such as InnoDB and MyISAM etc. Different engines have different advantages and disadvantages for different scenarios. It is necessary to choose a suitable database engine according to specific needs to obtain better performance and scalability.
2. Build appropriate indexes: In the database, indexes are the key to improving query speed. Indexes need to be added to the fields in the table reasonably based on actual query requirements. At the same time, care needs to be taken to avoid too many indexes and high index maintenance costs.
3. Use appropriate storage format: When storing data, it is also important to choose the appropriate data type and storage format. For example, when storing some fields that only contain dates, you can choose to use the date type instead of the character type. In addition, you can consider using compression algorithms to compress data to reduce storage space.
4. Use caching technology: As mentioned above, caching technology is one of the important means for data storage optimization. Caching technology can be used to store part of the data in memory to reduce frequent access to the database. At the same time, the cache invalidation mechanism needs to be considered to ensure timely updating of data.
5. Database sub-tables and sub-databases: When the amount of data in the database is very large, you can consider storing the data in multiple tables or multiple databases. This can reduce the amount of data in a single table or database and improve query efficiency. At the same time, in the design of sub-tables and sub-databases, actual query needs need to be taken into consideration and the data should be divided reasonably.

Summary:

Understanding the underlying development principles of PHP, especially caching technology and data storage optimization, is crucial to improving website performance and user experience. Caching technology can reduce the number of repeated calculations and frequent database accesses and improve response speed. Data storage optimization can improve database query efficiency and storage space utilization through reasonable selection of database engines, establishment of indexes, use of appropriate storage formats, use of caching technology, and partitioning of tables and databases. I hope that the sharing of this article will help readers understand the underlying development principles of PHP and optimize website performance.

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