Did you receive a ready topic with JSON or did you work out message contracts, partitions, consumers yourself?

Depending on the project and role, the approach can vary. If I was involved in developing message contracts myself, I usually:

• Defined the structure of JSON messages, which fields are mandatory, which are optional.
• Set the format and data types for each field.
• Planned topic partitioning for scalability and performance.
• Configured consumers: how many threads, how messages are processed, acknowledgment mechanisms.

If the topic was already prepared, my task was to understand and use existing contracts, verify their compliance with requirements, and integrate with consumers.

Such experience helps to better control data quality and the robustness of the message exchange system.