beginner~3h
Building the Producer Microservice
The first real code on this site. By the end of this module, HTTP requests into your Spring Boot app are landing as durable records in Kafka.
Learning objectives
- Beginner: A single POST endpoint publishing unkeyed JSON events to one topic, letting the default partitioner spread them.
- Intermediate: POST + PUT with keyed updates, environment-specific producer config via Spring Profiles, and centralized validation error responses.
- Advanced: Combine with Module 13's reliability config (idempotence, acks=all) and Module 16's transactional send, so a single request atomically publishes multiple related events.
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Building the Producer Microservice