Fault isolation and degradation
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
design so a failing component degrades one feature rather than the business.
Planned topics
- Isolation tools: timeouts, circuit breakers, bulkheads (separate resource pools), queues that absorb bursts.
- Degraded modes: show cached prices, disable recommendations, accept orders and post to the ERP later.
- Decide per feature which are essential and which can switch off.
- Make the degraded state visible to staff and customers where it matters.
Draft outline details
Demonstration
a table: dependency, failure, degraded behavior, user message. ERP down: orders accepted, stock shown as "last known", postings queued.
Check your understanding
What is a degraded mode?
Show answer
A reduced but working behavior used while a dependency is unavailable.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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