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Tencent Cloud Middleware
Tencent Cloud Middleware
Dec 15, 2022 · Operations

Designing Pulsar Disaster Recovery: Multi‑Region Replication, Rack‑Aware Placement, and Dual‑Write Strategies

This article explains how Tencent engineers configure Apache Pulsar for disaster recovery, covering multi‑replica consistency, journal handling, rack‑aware placement, GEO cross‑region replication, dual‑write/dual‑consume setups, and operational lessons for ad and billing scenarios.

Apache PulsarRack Awarenessmessage queues
0 likes · 10 min read
Designing Pulsar Disaster Recovery: Multi‑Region Replication, Rack‑Aware Placement, and Dual‑Write Strategies
Big Data Technology Architecture
Big Data Technology Architecture
Apr 20, 2020 · Big Data

Introduction to HDFS: Architecture, Features, Replication, Rack Awareness, and Metadata Management

This article provides a comprehensive overview of Hadoop Distributed File System (HDFS), covering its streaming data access model, key characteristics, master‑slave architecture, block storage and replication mechanisms, rack‑aware placement strategy, and how the NameNode manages metadata and checkpoints.

Distributed File SystemHDFSHadoop
0 likes · 7 min read
Introduction to HDFS: Architecture, Features, Replication, Rack Awareness, and Metadata Management