Put the same key with different ttl

[zysaaa]

        expiringMap.put("a", "a", 1000, TimeUnit.MILLISECONDS);
        expiringMap.put("a", "a", 20_000, TimeUnit.MILLISECONDS);
        Thread.sleep(5000);
        System.out.println(expiringMap.get("a")); // output null

Is this expected behavior? Can't I refresh ttl of this key？

[littleQiu22]

Try this:

expiringMap.put("a", "a", 1000, TimeUnit.MILLISECONDS);
expiringMap.setExpiration("a", 20_000, TimeUnit.MILLISECONDS);
Thread.sleep(5000);
System.out.println(expiringMap.get("a")); // output "a"

[bratkartoffel]

I think this should at least be documented on the put(K, V, long, TimeUnit) as it's kind of unexpected behaviour.
Just stumbled across this issue while trying to update an entry during an ExpirationListener.