easy5 pts · first answer countssystem-designdnsavailability
DNS failover is slow
A team fails over to a backup region by changing a DNS record with a TTL of 3600 seconds. Why do many users still hit the dead region for a while?
Discussion 0
Join free to post in the discussion.
Related questions
- MTTR and MTBFBackend Developer
- What a load balancer doesBackend Developer
- Serving images to far-away usersBackend Developer
- The cache-aside patternBackend Developer
- Scaling a read-heavy databaseBackend Developer
- Latency versus throughputBackend Developer
- Estimating requests per secondBackend Developer
- How much downtime 99.99% allowsBackend Developer