Object Pools

Object pools are a memory management pattern that reduces garbage collection pressure by reusing object instances instead of allocating and discarding them. When an object is needed, it's pulled from a pool's free list; when done, it's returned rather than discarded. This keeps the GC from collecting short-lived objects, which can cause framerate hitches in scenarios like 3D rendering. A JavaScript implementation using an Array as a stack demonstrates alloc() and free() methods. Key caveats: modern GCs are already very good, so pools can hurt performance if misused, and objects should be zeroed out when returned to prevent data leakage.