Designing for High Availability

What is High Availability (HA)? It's about designing systems that keep running even when parts fail. Erlang and OTP are built from the ground up to achieve this.

Imagine a critical service like an online store. If it goes down, sales are lost! HA aims to minimize downtime, ensuring your application remains operational and accessible to users.

Achieving High Availability relies on several key design principles:

• Redundancy: Having multiple components capable of performing the same task.
• Fault Tolerance: The ability to continue operating despite failures.
• Automatic Recovery: Systems that detect failures and recover or switch automatically.
• No Single Point of Failure (SPOF): Eliminating any component whose failure would bring down the entire system.