Data contracts
On This Lesson 4 topics
This lesson is planned. The outline below lists the topics it will cover. The full lesson has not been published yet.
In this lesson
make the agreement between a producer and its consumers explicit and checkable.
Planned topics
- A data contract states schema, semantics (what each field means), quality rules, and service levels.
- Semantics matter most: "order_total" including tax or not is the usual dispute.
- Version contracts and give notice before breaking changes.
- Check contracts automatically at the producer's pipeline, not after consumers break.
Draft outline details
Demonstration
a contract outline for OrderPlaced: fields and types, meaning of each amount, completeness rule, freshness SLA (verify target with consumers), owner, change policy.
Check your understanding
Which part of a contract do teams most often omit, causing disputes?
Show answer
Semantics: what the fields mean.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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