Module 28: Advanced APIs and Real-Time Systems

MODULE 28 · 4 LESSONS

Extend REST knowledge with query, RPC and real-time protocols, choosing each for a concrete communication problem.

Project checkpoint: Prototype three CourseFlow communication boundaries and defend one production choice with latency, coupling and operational evidence.

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Module 28 learning loopA four-step visual showing schema definition, queries, resolvers, N+1 queries.Module 28 learning loop1Schema Definition2Queries3Resolvers4N+1 Queries

Module 28 learning loop

  1. 1Schema Definition
  2. 2Queries
  3. 3Resolvers
  4. 4N+1 Queries
Module 28 learning loop: a practical sequence used in this lesson.

What this module changes in your work

  • Design a small typed graph that lets clients ask for course data without turning every resolver into an unbounded database query.
  • Turn exploratory requests into a portable collection with environment-safe variables and assertions that expose contract regressions.
  • Use schema definition, queries, resolvers in one coherent implementation.
  • Complete this evidence-backed checkpoint: Prototype three CourseFlow communication boundaries and defend one production choice with latency, coupling and operational evidence.

Lessons

PROJECT CHECKPOINT

Turn advanced apis and real-time systems into evidence

Prototype three CourseFlow communication boundaries and defend one production choice with latency, coupling and operational evidence.

  • Write acceptance criteria for schema definition before implementation.
  • Keep the change small enough that a reviewer can connect it to the intended behavior.
  • Use the most direct check available for queries and save the result.
  • Record one decision you would keep and one you would revisit after feedback.

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