Understanding high‑availability architectures involves mastering replication and fail‑over, balancing RTO and RPO, and choosing among four patterns—Active‑Standby, Active‑Active, Cold Standby, and Hot Standby—each with distinct synchronization, load‑balancing, and cost considerations for reliable system design.
This article explains the three main data‑center redundancy models—hot standby, cold standby, and active‑active—detailing how each works, their advantages and drawbacks, and the key requirements for implementing a truly resilient dual‑site infrastructure.
This article explains how 360 Commercialization implements cross‑IDC hot‑standby for Kafka using MirrorMaker 2, covering MM2 fundamentals, architecture, internal topics, deployment on Kubernetes, design goals, solution details, challenges such as dynamic configuration and offset reverse‑mapping, and productized risk mitigation.
The article explains how the WeiChe app leverages AI to instantly recognize car dashboard warning lights, describes the underlying deep‑learning infrastructure on UCloud’s UAI‑Inference platform, and shows how the Hot‑Standby feature dramatically cuts GPU costs while maintaining real‑time performance.
