[sarchertech]

Unfortunately you are not equipped to observe and test all or even most of the behavior of a non-trivial system.

And if you attempt to treat every module in your system like it’s untrusted 3rd party code you’ll run into severe complexity and size limits. No one codes large systems like that because it’s not possible. There are always escape hatches and entanglements.

[raw_anon_1111]

Actual a little company you might have heard of called Amazon does…

Jeff Bezos mandated it in 2002.

https://konghq.com/blog/enterprise/api-mandate

AWS S3 by itself is made up of 200+ micro services

[sarchertech]

Except that they don’t. The API mandate gets violated all the time. And no one at Amazon actually treats every other team as a 3rd party.

[raw_anon_1111]

Have you worked at Amazon?

I am not saying they treat every other team as a third party. I am saying they treat the code itself as a black box with well defined interfaces. They aren’t reaching in to another services data store to retrieve information.

[sarchertech]

How do you know someone is ex-Amazon ? Don’t worry they’ll tell you.

I haven’t mentioned it 5 times already so you can be pretty sure I haven’t. I know too many people that have worked there to ever make that mistake.

But more importantly, have you worked there in the last decade?

[raw_anon_1111]

Then you have know idea how Amazon works. I was there from 2020-2023.

And before that I worked at 4 product companies when new to the company managers /directors/CTOs needed someone to bring in best practices and build and teach teams.

I honestly wonder what type of “big ball of mud” implementations (https://blog.codinghorror.com/the-big-ball-of-mud-and-other-...) you have had to deal with that weren’t properly componentized and covered by tests.