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James Snell makes some comments that tie up with my own recent thoughts about architecture styles in one of my presentations.
The problem with this is that there isn't a single Web services model. There are at least three:
- REST Style: an endpoint is a resource
- RPC Style: an endpoint is an interface
- Messaging Style: an endpoint is a mailbox
I made a further distinction between Messaging and Service-oriented Request/Response styles based largely on asynchronous requests (ie. no directly correlating reply message), but I believe this roughly amounts to the same breakdown that James is making here. I do like James' succinct definitions above though.
I have a few presentations in the works at the moment taking about architecture styles and the evolution occurring in the industry from object-oriented RPC to Service-oriented architecture styles. I hope to share shortly for public feedback and comment, because I still believe there is a lot of learning and thinking in this area we need to do as an industry.
Update: I seem to have got the hyperlinks totally messed up on the original version of this post, but I fixed them now.
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