object-pooling-system

You can eliminate GC spikes in Unity by using object pooling to reuse GameObjects instead of calling Instantiate and Destroy, preventing allocation overhead during rapid spawns of bullets, enemies, or particles.

The IPoolable lifecycle in Unity object pools provides OnSpawn and OnDespawn methods, ensuring deterministic retrieval, reuse of pooled objects, and explicit Return. This manages object state across multiple spawn cycles without allocating new memory.

Pre-warming a Unity object pool involves initializing a set number of bullets, particles, or VFX objects upfront using provided pool templates. This prevents frame hitches during gameplay by ensuring pooled objects are ready before they are needed.

The object pooling system supports Simple, Generic, Expandable, and Multi-Pool configurations, allowing you to manage multiple prefabs and scale pool sizing strategies dynamically for various UI list items, enemies, and projectiles.

Object pooling for Unity GameObjects requires implementing IPoolable interfaces and explicit Return calls. It is not suited for objects with non-deterministic lifecycles or unique spawn states, as reusing instances without resetting state properly can cause gameplay bugs.