What is the `ConcurrentSkipListMap` used for in Java?
`ConcurrentSkipListMap` is used to store data in a map-like structure and provides thread safety by allowing synchronized access to the elements.
Thatâ€™s partially correct. `ConcurrentSkipListMap` provides thread-safe access, but it uses a skip list algorithm rather than traditional synchronization mechanisms.
Can you explain how a skip list structure works and why it's efficient for concurrent operations?