Non-blocking (async) DNS resolving in Java

Question

Is there a clean way to resolve a DNS query (get IP by hostname) in Java asynchronously, in non-blocking way (i.e. state machine, not 1 query = 1 thread - I\'d like to run tens

Answer 1

You have multiple options

Option 1: Java 5 Executors

1. A Fixed thread pool: Executors.newFixedThreadPool(int)
2. Future: A Future represents the result of an asynchronous computation. Methods are provided to check if the computation is complete, to wait for its completion, and to retrieve the result of the computation.

Option 2: JMS with MessageListener

1. Requires dependency on JMS Provider etc.

Option 2: Actor based framework

You can scale this well with this.Look at Akka.