alt Hacker News> Pass messages. Use json. I shouldn’t need your code to function. Just your API.
Yes, but there’s likely a lot of common code related to parsing those messages, interpreting them, calling out to other services etc. shared amongst all of them. That’s to be expected. The question is how that common code is structured if everything has to get updated at once if the common code changes.
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c-fe • today at 12:08 AM
one way is by using schemas to communicate between them that are backwards compatible. eg with avro its quite nice
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Common code that’s part of your standard library, sure. Just parse the json. Do NOT introduce some shared class library that “abstracts” that away. Instead use versioning of schemas like another commenter said. Use protobuf. Use Avro. Use JSON. Use Swagger. Use something other than POCO/POJO shared library that you have to redeploy all your services because you added a Boolean to the newsletter object.