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file-lock

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php中文网 Courses

Apr 8, 2022 · Backend Development

Preventing Overselling in High‑Concurrency Flash Sale Systems with PHP, MySQL, and Redis

This article explains how to handle flash‑sale (seckill) scenarios in PHP by reducing database pressure with caching, preventing stock oversell using row locks, transactions, file locks, and Redis queues, and provides complete code examples for each technique.

MySQLPHPRedis

0 likes · 13 min read

Preventing Overselling in High‑Concurrency Flash Sale Systems with PHP, MySQL, and Redis

php中文网 Courses

Dec 21, 2020 · Backend Development

Preventing Concurrent Access Issues with WeChat Access Tokens Using PHP File Lock (flock)

This article explains a real-world case where storing WeChat access tokens in a JSON file caused race conditions, analyzes the root cause, and demonstrates how to use PHP's flock() function with proper locking to safely read and write the token, including sample code.

ConcurrencyWeChataccess token

0 likes · 6 min read

Preventing Concurrent Access Issues with WeChat Access Tokens Using PHP File Lock (flock)