Summary of shopping cart settlement methods

This time I will bring you a summary of the methods for implementing shopping cart settlement, and what are the precautions for implementing shopping cart settlement. The following is a practical case, let’s take a look.

There are currently three types of shopping carts, which are stored in

cookie or session, or combined with database storage

The first one is stored in cookies

Advantages:

1.cookie是存储在客户端的,且占用很少的资源,一般cookie中可以存储300个cookie,每个cookie为4KB,既可以满足购物车的需求,还可以减轻服务器的压力.
2.cookie是浏览器内置,只要在cookie定义的有效期内,数据都不会丢失.
3.二区cookie不是可执行文件,所以不会给用户带来病毒或攻击用户系统

Disadvantages:

  1.基于cookie开发的购物车要求用户浏览器必须支持并设置为启用cookie,否则购物车则失效.
  2.存在着关于cookie侵犯访问者隐私的争论,因此有些用户会禁止本机cookie的功能.
  3.如果换一台机器在去登录的话,就会丢失购物车信息;

The second is session

Advantages:

1. Session can be synchronized with the client and does not depend on the client's settings.

2. With Compared with cookies, sessions are information stored on the server side, so they are more secure. Disadvantages: 1. Sessions will occupy server resources , increase the load on the server, especially when there are many concurrent users, a large number of sessions will be generated, affecting the performance of the server.
2. Since the information stored in the session is more sensitive and is stored in the server in the form of files, it is also There are security risks;

The third method is to combine with the database

This mode is relatively common at present.

It has the following characteristics

Advantages:

1. The database and cookie are responsible for recording data and maintaining responses respectively. They can give full play to their respective advantages and improve security and server performance; 2. No matter which machine you switch to, the shopping cart information will not be lost;

Disadvantages:

1. Each shopping

behavior

, must be connected to the database, and the connection will not be released until the operation on the table is completed. When there are many concurrent users, it will affect the performance of the database, which puts forward higher requirements for the performance of the database;
2. Using cookies to maintain responses requires client support.

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

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