The original title is: "Angular performance optimization: change detection mistakes you should avoid"

Short summary

Angular's default change detection can hurt performance on large apps. Use OnPush strategy and immutable updates to avoid unnecessary renders. Common patterns: expensive functions in detection cycles, mutating objects, and missing trackBy functions all cause slowdowns.

• •Use OnPush change detection strategy to reduce unnecessary change cycles
• •Maintain immutable data structures to ensure proper change detection behavior
• •Add trackBy functions to ngFor lists to prevent DOM element recreation

Generated with AI, which can make mistakes.