Daily Term: High Availability

High Availability

High Availability (HA) refers to designing systems to minimize downtime and ensure they remain operational, typically aiming for 99.9% or higher uptime. For example, a web service might achieve HA by using redundant servers, load balancers, and failover mechanisms. HA ensures reliability for critical applications, like e-commerce platforms, but it requires redundancy, monitoring, and automated recovery, which can increase costs and complexity.

Date: 2025-08-30