[RFC] Idempotent Requests Setup

[rohan09-raj]

• We have some APIs like clearing cache etc. which a user should not be able to call as it costs us and probably the user will be also be costed with our crypto.
• To prevent excess firing of these API calls there has to be some setup to limit the API calls.
• Idempotent Requests is one of the solution, more context on this here Cache test case website-my#79 (comment)