What is a message processor and what is use of it

[adas · Accepted solution]

@Nagaraju Kokkella The Apigee API Gateway essentially consists of a routing layer (known as the router) and a processing layer (known as the message processor). The message processor is essentially the engine that receives and processes all your API requests, applies the policies to the runtime requests and serves the response.

A good place to start with the basic would be to go through the content here: http://docs.apigee.com/api-services/content/what-apigee-edge

[michaelmcdowell]

Hi Argha, There's no mention of the message processor in the link above. As you mention _"it's to start with the basics"_ but the question was specifically about the *message processor*.

[#3]

I think each policy can be treated as a message processor. the message is the http request or response object, each policy can modify,add,remove some thing to the request payload, this is a processing procedure when the message pass through these policies.

this is just my understanding, hope that this can be useful for you.