What is ConcurrentHashMap and when should I use it?
ConcurrentHashMap is a thread-safe variant of HashMap. You should use it when multiple threads access a map concurrently.
What are the advantages of using ConcurrentHashMap over synchronized collections?
It offers better performance in concurrent scenarios by allowing multiple threads to read and write without locking the entire map.
Can you give me an example of when to use it?
Sure! Use ConcurrentHashMap in a multi-threaded application where you need to maintain a shared cache of data.
Are there any downsides to using ConcurrentHashMap?
Yes, it has a higher memory overhead compared to regular HashMap and may not be suitable for all use cases.
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