Idempotence

Immutable Infrastructure with Infrastructure as Code Immutable infrastructure means you never patch a running server or service. If something needs updating, you replace the old artifact with a new one. Infrastructure as code (IaC) means you describe the desired state of your systems in code and let automated tools create or replace resources to match. When used together, these ideas cut drift, speed up recovery, and make deployments repeatable across environments. ...

Building Resilient Systems: Fault Tolerance and Recovery Resilient systems stay available when parts fail. Fault tolerance means the system keeps working even if some components fail. Recovery is the plan to restore full function after an outage. Together, these ideas help teams meet user needs, even in rough conditions. Design decisions at every layer matter. Hardware, networks, services, and data all deserve attention. Clear health checks, fast detection, and quick recovery actions prevent small problems from becoming big outages. ...