How do you design AngularJS applications to survive backend instability without UI failure?

Resilient AngularJS apps use caching, fallback states, retry policies, and partial rendering strategies.

Backend instability is common in distributed systems. AngularJS applications must be designed to degrade gracefully instead of failing completely. This is achieved by caching last-known-good states, using interceptors for retry logic, and rendering partial UI instead of blocking entire views. Services must isolate failures so one API failure does not cascade into full UI collapse.