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Microservices are interesting.

Not Technically, as they increase complexity.

But they enable something really powerful: continuity of means, continuity of responsibility, that way a small team has full hand of developing AND operating a piece of a solution.

Basically, organization tends to be quite efficient when dealing with small teams (about dozen people, pizza rule and everything), that way information flows easily, with point to point communication without the need of a coordinator.

However, with such architecture, greater emphasis should be put on interfaces (aka APIs). A detailed contract must be written (or even set as a policy):

* how long the API while remain stable?

* how will it be deprecated? with a Vn and Vn-1 scheme?

* how is it documented?

* what are the limitations? (performance, call rates, etc)?

If you don't believe me, just read "Military-Standard-498". We can say anything about military standards, but military organizations, as people specifying, ordering and operating complex systems for decades, they know a thing or two about managing complex systems. And interfaces have a good place in their documentation corpus with the IRS (Interface Requirements Specification) and IDD (Interface Design Description) documents. Keep in mind this MIL-STD is from 1994.






According to Wikipedia, Military Standard 498 has been replaced with ISO/IEC/IEEE 12207. Do you have any experience with that? Do you have experience with any other modern standards for software development?

Not really, it's something I was confronted to when I was working on military contracts a few years ago.

From what I recall, it's very waterfall minded in term of specification workflow, it's also quite document heavy, and the terminology and acronyms can take a while to get used to.

I found it was a bit lacking regarding how to put together all the pieces into a big system, aka the Integration step. IMHO It's a bit too software oriented, lacking on the system side of thing (http://www.abelia.com/498pdf/498GBOT.PDF page 60).


Thanks for the source.



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