WebInvoke Method=“POST” or "GET" for a REST Service on WCF

Question

When should use post vs get? in a REST service on WCF?, below is my interface

       [OperationContract]
       [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, ResponseFormat = WebMessageFormat.Json)]
       string DoLodge(string Id, Lodge value);

       [OperationContract]
       [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, ResponseFormat = WebMessageFormat.Json)]
       LodgeLevel[] GetLodgeLevels(string Id);

       [OperationContract]
       [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, ResponseFormat = WebMessageFormat.Json)]
       long GetLodgeCount(string Id);

Answer 1

POST should be used when sending an update back to the server.

GET should be used when retrieving an object from the server.

You might want to read up on what the HTTP Verbs mean in the context of RESTful services:

• http://swdeveloper.wordpress.com/2012/03/04/rest-for-the-rest-of-us/
• http://homepages.tig.com.au/~ijoyner/Ian_Joyner/REST.html