Warm Standby

Definitions

1. A redundancy approach where a secondary system is running and receiving data updates but is not serving live traffic, allowing it to be promoted to primary quickly but not instantaneously.

   In plain English: A backup system that is on and kept up to date, but isn't actually serving users yet. It can take over pretty quickly if the main system fails, but there's a brief pause.

   Example: "Our DR plan uses warm standby — the replica is only 30 seconds behind, so we can cut over in under two minutes if the primary datacenter catches fire."

Related Terms

• Load Balancer
• Failover
• Active-Active
• Terraform Module
• Terraform State