Alternative to Selectors

Selectors are expensive, and they may slow down or delay the process of receiving messages, so they should be avoided unless absolutely necessary.

For example, if you are using a single queue with selectors to receive response messages that satisfy a single specific criteria, it is better to use temporary queues for receiving such responses.

You should avoid using selectors to make a single queue look like multiple queues, for example, to implement priorities. In such cases, it is recommended to have multiple queues, for example, a high-, middle-, and low-priority queue.