this post was submitted on 10 Feb 2026
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And dependency injection!
Every class needs to use DI for calling other classes, even though we'll have anyway just a single implementation for all of them, and we won't be using this flexibility at all (not even for tests where it might be useful for mocking dependencies).
Methods calling other methods? Heresy! There needs to be two or three interceptors on there, and some indirection over RabbitMQ using spring-integration, at the very least.
This is how you write proper enterprise-level software: https://github.com/EnterpriseQualityCoding/FizzBuzzEnterpriseEdition