This topic describes how to call Simple Message Queue (SMQ, formerly MNS) API operations.
You can call the following SMQ API operations to manage queues and topics:
API operations that are used to manage queues
You can use an SMQ queue if you need to send messages from one client to another client. The receiver client must send polling requests to pull messages from the queue.
API operations that are used to manage topics
You can use an SMQ topic if you need to send messages from one client to multiple clients. The sender client pushes messages to the topic. You must enable the receiver clients to listen for messages from the topic.