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Ameen Abozaid
Planned lessonMID-025-L05

Evaluating a boundary

  • Lesson 5 of 6
  • Mid-level
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

test a proposed boundary with questions.

Planned topics

  • Do changes usually stay inside one service? Look at change history for co-changing files.
  • Does a typical use case need one service or five? Many hops signal a bad cut.
  • Can the service work if others are down?
  • Is the data owned by exactly one service?
  • Is there a team that can own it and a stable API?
  • Wrong boundary signs: chatty calls, lockstep releases, shared tables.
Draft outline details

Demonstration

a checklist table with columns Criterion, Evidence, Pass/Fail.

Check your understanding

Which sign shows a bad boundary?

Show answer

Chatty calls, lockstep releases, or shared tables.

Practice

Apply this lesson with the module's lab, exercises and quiz.

Lab and exercises Quiz

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