search
HomeBackend DevelopmentPHP TutorialHow to use the flash sale function of PHP Developer City

How to use the flash sale function of PHP Developer City

May 22, 2023 am 08:51 AM
phpMallflash sale function

With the development of e-commerce, competition among malls has become increasingly fierce. In order to attract users, malls generally adopt the form of flash sales activities. However, flash sale activities need to have high concurrency, high availability and other characteristics, which places high technical requirements on developers. In this article, we will introduce how to take advantage of the flash sale function of PHP Developer City.

1. The basic principle of the flash sale function

During a flash sale event, a large number of users rush to purchase the same product at the same time. If these requests cannot be processed within a short period of time, the server will easily crash. Therefore, the first problem we need to solve is how to handle high concurrency.

In order to solve the problem of high concurrency, the following methods are generally used:

  1. Increase the performance of the server: This is the most basic solution, which can increase the bandwidth, storage and processing of the server Ability to improve server performance.
  2. Distributed architecture: Divide a large system into several small systems. Each system is responsible for its own tasks and completes tasks collaboratively through a total system.
  3. Cache: Cache frequently used data into memory to reduce the access burden on the database.

2. Steps to implement flash sale function in PHP

  1. Design database table

When designing a database, there are many factors that need to be considered. How The design can quickly query and insert data, and at the same time, the lock mechanism for concurrent query and insertion needs to be considered, so that all users (buyers) can instantly get a valid flash sale token and successfully submit an order.

When we design the database, we need to consider at least the following tables:

Goods table (goods): stores basic information of goods, such as product ID, name, price, inventory, etc.

Order table (orders): stores basic information of orders, such as order ID, user ID, product ID, order status, etc.

Seckill product table (seckill_goods): stores the basic information of seckill products, such as seckill product ID, product ID, seckill price, seckill start and end time, etc.

Seckill order table (seckill_orders): stores basic information of seckill orders, such as seckill order ID, user ID, seckill product ID, order number, order status, etc.

  1. Writing business logic

(1) Flash sale product list page

First, we need to display the list of all products that are on flash sale, which can be done using PHP Template engine Smarty is implemented. In Smarty, you can use some flow control statements, variables, etc. to process data.

(2) Flash sale details page

When the user clicks on a product in the flash sale product list, it will jump to the product details page. At this time, it is necessary to determine whether the product is within the flash sale time. , and return prompt information to the user.

If it is within the flash sale period, the "Second Sale Now" button needs to be displayed. Clicking this button will send an AJAX request to the flash sale interface. If the inventory of the product is not 0, the corresponding order information will be generated and returned.

(3) Flash sale interface

When the user clicks the "Second Sale Now" button, an AJAX request will be sent to the flash sale interface. In the interface, you need to perform the following operations:

  1. Determine whether the user has flash sale: Query whether an order record already exists in the flash sale order table based on the user ID and product ID.
  2. Determine whether the inventory of the product is sufficient: Check whether the inventory of the product is sufficient in the flash sale product table.
  3. Generate order: If there is no order record and the product inventory is sufficient, a flash sale order record will be generated and the processing result will be returned.

(4) Order list page

After the flash sale is successful, users can view their order information on the order list page. When displaying order information, you need to pay attention to changes in order status.

3. Optimize program performance

In addition to the above logic implementation, program performance is also very critical. Here are several performance optimization methods.

  1. Restrict user access: You can limit the number of user visits in a short period of time through IP address, user ID, cookies, etc. If the number of accesses is exceeded, an error message of "Too frequent requests" can be returned.
  2. Use cache: Common data such as product information and order information can be stored in the cache server to reduce the access pressure on the database.
  3. Use Redis queue: In the case of high concurrency, you can put the flash sale request in the Redis queue to release the pressure on the server through asynchronous processing and improve the processing efficiency of the program.
  4. Use multi-thread processing: You can use PHP's multi-thread extension pthread to process high concurrent requests at the same time to improve the processing efficiency of the program.

In short, the technical architecture required to develop the flash sale function is relatively complex, including high concurrency, high availability, high performance and other technical requirements. However, excellent user experience and extensive market demand are still required for this technology. Provides broad development opportunities. The above are some of my thoughts and summary on using the flash sale function of PHP Developer City. I hope it can be helpful to everyone.

The above is the detailed content of How to use the flash sale function of PHP Developer City. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
How can you check if a PHP session has already started?How can you check if a PHP session has already started?Apr 30, 2025 am 12:20 AM

In PHP, you can use session_status() or session_id() to check whether the session has started. 1) Use the session_status() function. If PHP_SESSION_ACTIVE is returned, the session has been started. 2) Use the session_id() function, if a non-empty string is returned, the session has been started. Both methods can effectively check the session state, and choosing which method to use depends on the PHP version and personal preferences.

Describe a scenario where using sessions is essential in a web application.Describe a scenario where using sessions is essential in a web application.Apr 30, 2025 am 12:16 AM

Sessionsarevitalinwebapplications,especiallyfore-commerceplatforms.Theymaintainuserdataacrossrequests,crucialforshoppingcarts,authentication,andpersonalization.InFlask,sessionscanbeimplementedusingsimplecodetomanageuserloginsanddatapersistence.

How can you manage concurrent session access in PHP?How can you manage concurrent session access in PHP?Apr 30, 2025 am 12:11 AM

Managing concurrent session access in PHP can be done by the following methods: 1. Use the database to store session data, 2. Use Redis or Memcached, 3. Implement a session locking strategy. These methods help ensure data consistency and improve concurrency performance.

What are the limitations of using PHP sessions?What are the limitations of using PHP sessions?Apr 30, 2025 am 12:04 AM

PHPsessionshaveseverallimitations:1)Storageconstraintscanleadtoperformanceissues;2)Securityvulnerabilitieslikesessionfixationattacksexist;3)Scalabilityischallengingduetoserver-specificstorage;4)Sessionexpirationmanagementcanbeproblematic;5)Datapersis

Explain how load balancing affects session management and how to address it.Explain how load balancing affects session management and how to address it.Apr 29, 2025 am 12:42 AM

Load balancing affects session management, but can be resolved with session replication, session stickiness, and centralized session storage. 1. Session Replication Copy session data between servers. 2. Session stickiness directs user requests to the same server. 3. Centralized session storage uses independent servers such as Redis to store session data to ensure data sharing.

Explain the concept of session locking.Explain the concept of session locking.Apr 29, 2025 am 12:39 AM

Sessionlockingisatechniqueusedtoensureauser'ssessionremainsexclusivetooneuseratatime.Itiscrucialforpreventingdatacorruptionandsecuritybreachesinmulti-userapplications.Sessionlockingisimplementedusingserver-sidelockingmechanisms,suchasReentrantLockinJ

Are there any alternatives to PHP sessions?Are there any alternatives to PHP sessions?Apr 29, 2025 am 12:36 AM

Alternatives to PHP sessions include Cookies, Token-based Authentication, Database-based Sessions, and Redis/Memcached. 1.Cookies manage sessions by storing data on the client, which is simple but low in security. 2.Token-based Authentication uses tokens to verify users, which is highly secure but requires additional logic. 3.Database-basedSessions stores data in the database, which has good scalability but may affect performance. 4. Redis/Memcached uses distributed cache to improve performance and scalability, but requires additional matching

Define the term 'session hijacking' in the context of PHP.Define the term 'session hijacking' in the context of PHP.Apr 29, 2025 am 12:33 AM

Sessionhijacking refers to an attacker impersonating a user by obtaining the user's sessionID. Prevention methods include: 1) encrypting communication using HTTPS; 2) verifying the source of the sessionID; 3) using a secure sessionID generation algorithm; 4) regularly updating the sessionID.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor