Need to implement Response Caching with request mapping with response

[darpanjain420]

I have following request:

Request with 2 query params: AppID and ObjectID

Request Payload : 

{
    "glossary": {
        "title": "example glossary",
		"GlossDiv": {
            "title": "S",
			"GlossList": {
                "GlossEntry": {
                    "ID": "SGML",
					"SortAs": "SGML",
					"GlossTerm": "Standard Generalized Markup Language",
					"Acronym": "SGML",
					"Abbrev": "ISO 8879:1986",
					"GlossDef": {
                        "para": "A meta-markup language, used to create markup languages such as DocBook.",
						"GlossSeeAlso": ["GML", "XML"]
                    },
					"GlossSee": "markup"
                }
            }
        }
    }
}

Now I want to implement response caching in a way that if the same request comes then APIGEE responds with the corresponding request. The same request is defined as combination of exact same payload and query params.

I want to create a mapping in the APIGEE for request and response and maintain that in APIGEE. But I dont think I can create such a mapping with the help of ResponseCache Policy as I cant keep the request payload as key for it. Please suggest a better approach.