Use sync.Pool to cache and reuse objects, reducing allocation overhead and garbage collection frequency.
Use sync.Pool to store reusable objects in a pool, retrieving them with Get() and returning them with Put() after use to reduce garbage collection pressure.
var pool = sync.Pool{
New: func() any {
return &MyObject{}
},
}
// Get an object
obj := pool.Get().(*MyObject)
// Use the object
obj.DoWork()
// Return to pool
pool.Put(obj)
sync.Pool is a way to keep a stash of objects you've already created so you don't have to make new ones every time. Think of it like a library of reusable tools: you check one out when you need it, use it, and put it back on the shelf for the next person. This saves your computer time and energy by avoiding the constant work of creating and destroying objects.