Richardson Maturity Model 4 levels of Restful endpoint. Endpoint definition standards. Session 20

Welcome back friends! in the last post we have seen What is HATEOS Session 19. Now we will going to explore what is Richardson Maturity Model.
Richardson Maturity model tells that four level of Web service end point construction which are Level0, Level1, Level2 and Level3. Each level you we can see some good improvements in Webservice URI construction.
Exposing soap webservice in Rest Style – LEVEL 0
http://yourserver.com/addEmployee, http://yourserver.com/removeEmployee Level 0 is nothing but get the All operation from Soap Web service and expose those operations as Rest Style
Creating Rest Service using proper resource identification – LEVEL 1
Example: http://yourserver.com/employees, http://yourserver.com/employees/20
Creating Rest Service with proper Resource Identification and correct HTTP Method – LEVEL 2
Example: GET http://yourserver.com/employees, GET http://yourserver.com/employees/20 POST http://yourserver.com/employees, DELETE http://yourserver.com/employees/20 Level 2 is combination of Level 1 and HTTP Methods
Creating Rest Service with Proper Resource Identification , proper Http Method and HATEOAS– LEVEL 3
Example: GET http://yourserver.com/employees, GET http://yourserver.com/employees/20 POST http://yourserver.com/employees, DELETE http://yourserver.com/employees/20 Level 2 is combination of Level 1 and HTTP Methods
In our past all Webservice examples are followed LEVEL2 and last session we have seen how to create HATEOS which is level3
For better understanding please watch following 8 minutes video


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