Tag: #멱등성
Kubernetes, DevOps and MLOps, written from things we ran and measured ourselves · 1 posts
Why Two Servers Cannot Achieve HA 2: What a Single Witness Changes and Remaining Pitfalls
Adding a witness VM with no data (2 vCPUs, 2 GiB) to two data nodes enables automatic failover. When we isolated a node, PostgreSQL promoted a new master in 22.6 to 32.7 seconds, and Redis Sentinel in 6.5 to 7.0 seconds,
2026-10-30 · 26 min read #고가용성#HA#PostgreSQL#Redis#OpenSearch