🛡️ High Availability: Avoiding Single Point of Failure with Redis Sentinel
Автор: Holy_Dev
Загружено: 2026-01-20
Просмотров: 17
Описание:
Redis is often a critical dependency - for caching, sessions, or messaging.
But when your Redis master goes down, what actually happens next?
In this video, we break down Redis Sentinel from a system design perspective:
how it monitors Redis, detects failures, reaches consensus, and performs automatic failover - without human intervention.
What you’ll learn in this video:
Why a single Redis instance is a single point of failure
The role of Sentinels and why quorum matters
S-DOWN vs O-DOWN: how failure detection really works
Leader election among Sentinels
How a new master is selected and replicas are reconfigured
This video is ideal for backend developers, DevOps engineers, and system architects who want high availability for Redis without jumping straight to Redis Cluster.
Note: This overview is generated from my original Vietnamese-language video, where I explain Redis Sentinel theory in depth.
#Redis
#RedisSentinel
#HighAvailability
#SystemDesign
#DistributedSystems
#BackendEngineering
#DevOps
#Failover
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