Solving Inventory Over-Selling with Locking Mechanisms and Distributed Locks
Understanding the Root Cause: Inventory Over-Selling
A classic inventory over-selling issue arises when multiple conucrrent requests decrement stock without proper synchronization. Consider a scenario where product inventory is stored in MySQL, and the stock reduction logic is implemented as follows:
@Service
public class StockService {
@A ...
Posted on Sun, 27 Sep 2026 16:51:05 +0000 by Diceman
Implementing High-Concurrency Seckill Systems with Redis
Core Characteristics of Seckill Systems
Extreme Concurrent Load: Seckill events generate massive instantaneous traffic, often reaching hundreds of thousands or millions of QPS. Traditional databases typically support only thousands of concurrent connections, whereas a single Redis node can handle tens of thousands. This makes Redis suitable f ...
Posted on Fri, 21 Aug 2026 16:22:25 +0000 by mcirl2
Java-Based Warehouse and Material Management System with SQL and Web UI
SQL Database Design
CREATE TABLE storage_facilities (
wh_code VARCHAR(20) NOT NULL COMMENT 'Unique facility code',
wh_name VARCHAR(100) NOT NULL COMMENT 'Facility name',
wh_address VARCHAR(255) COMMENT 'Physical address',
max_capacity INT COMMENT 'Storage capacity (units)',
PRIMARY KEY (wh_code)
) COMMENT='Storage Facilities ...
Posted on Thu, 07 May 2026 13:29:33 +0000 by ranman