Not RESTful

REST interface: “Do something and let me know when you’re done.”

Resource: “K.”

…

Resource: “Hey, I’m done.”

REST interface: “K.”

RESTful

REST interface: “Do something.”

Resource: “K.”

REST interface: “Are you done?”

Resource: “No.”

REST interface: “Are you done?”

Resource: “No.”

REST interface: “Are you done?”

Resource: “No.”

REST interface: “Are you done?”

Resource: “No.”

…