How would you design AngularJS digest cycle safety in extremely large applications?

Digest cycle safety is ensured by minimizing watchers, using async updates, and avoiding nested scope explosions.

At scale, AngularJS digest cycles become a bottleneck due to exponential watcher growth. Safety mechanisms include limiting scope depth, avoiding deep watches, using one-time bindings, and batching updates via $applyAsync. Architecture must enforce rules that prevent uncontrolled watcher creation. Performance regression monitoring is essential in enterprise systems.