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Tencent Cloud Middleware
Tencent Cloud Middleware
Apr 22, 2026 · Backend Development

How TDMQ Pulsar Scales Million-Message Delayed Queues with Multi-Level Time Wheels

The article analyzes why large‑scale delayed messaging is needed, identifies the bottlenecks of the Apache Pulsar community solution, and explains TDMQ Pulsar's three‑step redesign—hierarchical time wheels, expiration re‑push, and immutable message IDs—that together enable stable million‑message delayed queues with controlled memory and minute‑level hole impact.

Apache PulsarDelayed MessagingMessage Queue
0 likes · 8 min read
How TDMQ Pulsar Scales Million-Message Delayed Queues with Multi-Level Time Wheels
Ray's Galactic Tech
Ray's Galactic Tech
Dec 25, 2025 · Backend Development

Mastering Delayed Messaging: When to Use RabbitMQ, RocketMQ, or Redis

This guide explains why delayed messages are essential for distributed system stability, compares RabbitMQ's TTL+DLX and delayed‑message plugin, details RocketMQ's precise timing and delay‑level features, and offers custom Redis and time‑wheel solutions with practical Java code examples and deployment tips.

Delayed MessagingJavaMessage Queue
0 likes · 8 min read
Mastering Delayed Messaging: When to Use RabbitMQ, RocketMQ, or Redis
Java Tech Enthusiast
Java Tech Enthusiast
Aug 9, 2024 · Backend Development

RabbitMQ Overview, Installation Guide, and Delayed Message Implementation

RabbitMQ is a lightweight, open‑source AMQP broker offering reliable, flexible routing, clustering, and multi‑protocol support; it can be installed via Homebrew, Windows installers, or source on CentOS, and, using the rabbitmq_delayed_message_exchange plugin, Spring Boot applications can configure custom exchanges, queues, and send delayed messages with an x‑delay header.

Delayed MessagingInstallationJava
0 likes · 9 min read
RabbitMQ Overview, Installation Guide, and Delayed Message Implementation
Programmer DD
Programmer DD
Mar 17, 2023 · Backend Development

Master RocketMQ: Transaction, Ordered, Filtered & Delayed Messaging in Java & Spring

This tutorial walks through practical implementations of RocketMQ transaction, ordered, filtered, and delayed messages using native Java code and Spring Boot, explaining the underlying concepts, showing complete code examples, and highlighting how to configure producers, consumers, and listeners for reliable distributed messaging.

Delayed MessagingJavaMessage Filtering
0 likes · 16 min read
Master RocketMQ: Transaction, Ordered, Filtered & Delayed Messaging in Java & Spring
Top Architect
Top Architect
Jul 31, 2022 · Backend Development

Design and Implementation of Delayed Message Queues in Distributed Systems

This article surveys common delayed‑message solutions in distributed asynchronous messaging, evaluates implementations based on external storage, databases, RocksDB, Redis, and open‑source MQs like RocketMQ, Pulsar and QMQ, and discusses their advantages, drawbacks, and practical design considerations.

Delayed MessagingDistributed SystemsPulsar
0 likes · 13 min read
Design and Implementation of Delayed Message Queues in Distributed Systems
Architect's Guide
Architect's Guide
Jul 27, 2022 · Backend Development

Design and Implementation of Delayed Messaging in Distributed Systems

This article surveys common delayed‑message solutions—including database, RocksDB, Redis, and open‑source MQs like RocketMQ, Pulsar, and QMQ—explaining their architectures, advantages, drawbacks, and practical considerations for building reliable distributed asynchronous messaging.

Backend ArchitectureDelayed MessagingRocketMQ
0 likes · 13 min read
Design and Implementation of Delayed Messaging in Distributed Systems
Tencent Cloud Developer
Tencent Cloud Developer
Jun 1, 2022 · Backend Development

Implementing a Distributed Delayed Message Queue in Go Using Redis

Implementing a distributed delayed message queue in Go with Redis uses a List for ready jobs and a Sorted Set for delayed jobs, periodically migrating expired entries atomically via Lua or transactions, providing O(1) enqueue/dequeue performance, retry support, and scalable concurrency for multi‑instance systems.

Delayed MessagingGoLua Script
0 likes · 12 min read
Implementing a Distributed Delayed Message Queue in Go Using Redis
IT Architects Alliance
IT Architects Alliance
Nov 25, 2021 · Backend Development

RocketMQ Transactional, Batch, and Delayed Message Mechanisms – Detailed Explanation and Source Code

This article explains the principles and implementation of RocketMQ's transactional messages, batch messages, and delayed messages, describing the message flow, compensation mechanisms, broker and producer handling, and providing detailed source code snippets to illustrate each process.

Batch MessagingDelayed MessagingJava
0 likes · 19 min read
RocketMQ Transactional, Batch, and Delayed Message Mechanisms – Detailed Explanation and Source Code
Architect
Architect
Nov 11, 2021 · Backend Development

Implementing Delayed Message Delivery with RabbitMQ and Spring Boot

This article explains how to implement delayed message delivery in RabbitMQ using the official delayed‑queue plugin and Spring Boot, covering configuration of exchanges, queues, bindings, message publishing with delay headers, and consumer handling, along with code examples and test results.

Delayed MessagingJavaMessage Queue
0 likes · 8 min read
Implementing Delayed Message Delivery with RabbitMQ and Spring Boot
macrozheng
macrozheng
May 24, 2019 · Backend Development

Integrating RabbitMQ for Delayed Order Cancellation in a Spring Boot Mall Application

This tutorial walks through installing RabbitMQ, configuring it in a Spring Boot project, defining message models and enums, implementing delayed messaging to automatically cancel unpaid orders, and provides complete Java code, configuration files, testing steps, and useful resources for building a robust backend order system.

Delayed MessagingJavaOrder Cancellation
0 likes · 19 min read
Integrating RabbitMQ for Delayed Order Cancellation in a Spring Boot Mall Application
Programmer DD
Programmer DD
Jan 5, 2019 · Backend Development

Implementing Delayed Messaging with Spring Cloud Stream and RabbitMQ

This tutorial explains how to handle tasks with uncertain start times by leveraging RabbitMQ's delayed‑message plugin together with Spring Cloud Stream, covering plugin installation, configuration, Java code examples, and verification through logs and the RabbitMQ management UI.

BackendDelayed MessagingJava
0 likes · 8 min read
Implementing Delayed Messaging with Spring Cloud Stream and RabbitMQ