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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
Tencent Cloud Middleware
Tencent Cloud Middleware
Jun 25, 2025 · Cloud Computing

How Tencent Cloud TDMQ Serverless RabbitMQ Implements Distributed Rate Limiting for High‑Concurrency

This article deeply examines Tencent Cloud TDMQ RabbitMQ Serverless's distributed rate‑limiting mechanism, covering its necessity, design principles, token‑based throttling architecture, implementation challenges, client‑side error handling, and practical guidelines for planning load and configuring alerts to ensure stable high‑throughput messaging.

RabbitMQServerlessTDMQ
0 likes · 20 min read
How Tencent Cloud TDMQ Serverless RabbitMQ Implements Distributed Rate Limiting for High‑Concurrency
Tencent Cloud Middleware
Tencent Cloud Middleware
Apr 9, 2025 · Operations

How TDMQ Pulsar’s Cluster‑Level and Topic‑Partition Throttling Keeps Your Messaging System Stable

This article explains why high‑throughput producers and consumers can saturate CPU, memory, network and disk I/O in TDMQ Pulsar clusters, describes the built‑in cluster‑level distributed and topic‑partition rate‑limiting mechanisms, and provides practical guidance for configuration, monitoring, and troubleshooting.

Cluster ManagementMessage QueueOperations
0 likes · 12 min read
How TDMQ Pulsar’s Cluster‑Level and Topic‑Partition Throttling Keeps Your Messaging System Stable
Tencent Cloud Developer
Tencent Cloud Developer
Jun 7, 2024 · Cloud Native

Multi-AZ High‑Availability Architecture of Tencent Cloud TDMQ for Apache Pulsar

Tencent Cloud TDMQ for Apache Pulsar achieves multi‑AZ high availability by containerizing ZooKeeper, BookKeeper and Brokers, using managed ZK, persistent cloud disks and elastic NICs, enforcing quorum and rack‑aware replicas, and planning cross‑region bidirectional replication to ensure seamless disaster recovery and continuous messaging.

Cloud NativeMulti‑AZPulsar
0 likes · 15 min read
Multi-AZ High‑Availability Architecture of Tencent Cloud TDMQ for Apache Pulsar