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Selected Java Interview Questions
Selected Java Interview Questions
Jan 22, 2025 · Backend Development

Implementing Automatic Order Cancellation for Timeout Orders in a Monolithic Backend System

This article explains three backend solutions—database polling with scheduled tasks, JDK DelayQueue, and Netty's HashedWheelTimer—for automatically cancelling unpaid orders after a timeout in a monolithic architecture, detailing their implementation steps, pros, cons, and optimization tips with Java code examples.

DelayQueueHashedWheelTimerJava
0 likes · 11 min read
Implementing Automatic Order Cancellation for Timeout Orders in a Monolithic Backend System
Top Architect
Top Architect
Mar 29, 2022 · Backend Development

Various Implementations of Delayed Tasks in Java: Quartz, DelayQueue, HashedWheelTimer, Redis, and RabbitMQ

This article compares several approaches to implementing delayed tasks in Java, including Quartz polling, JDK DelayQueue, Netty's HashedWheelTimer, Redis sorted sets and keyspace notifications, and RabbitMQ delayed queues, analyzing their principles, code examples, advantages, and drawbacks for order timeout handling.

BackendDelayQueueHashedWheelTimer
0 likes · 16 min read
Various Implementations of Delayed Tasks in Java: Quartz, DelayQueue, HashedWheelTimer, Redis, and RabbitMQ