A Better sync.Pool 
This package is a thin wrapper over the Pool provided by the sync package. The Pool is an essential package to obtain maximum performance by reducing the number of memory allocations.
Extra Features
- Invalidate an item from the Pool (so it never gets used again)
- Set a maximum number of items for the Pool
- Returns the number of items in the pool (idle and in-use)
When should I use a pool?
If you frequently allocate many objects of the same type and you want to save some memory allocation and garbage allocation overhead — @jrv
How did I improve latency by 700% using sync.Pool
Example
import "github.com/rocketlaunchr/go-pool"
pool := pool.New(5) // maximum of 5 items in pool
pool.SetFactory(func() interface{} {
return &X{}
})
item := pool.Borrow()
defer item.Return()
// Use item here or mark as invalid
x := item.Item.(*X) // Use item here
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Logo Credits
- Renee French (gopher)
- Samuel Jirénius (illustration)