BiMap (or “bidirectional map”) is a special kind of map that maintains an inverse view of the map while ensuring that no duplicate values are present and a value can always be used safely to get the key back.

ConcurrentMap is a map that can be safely accessed from multiple goroutines.

LazyBiMap is like BiMap but creates values on demand.

LazyMap is like usual map but creates values on demand.

SyncMap is a wrapper around sync.Map that provides type safety.