Curriculum
Module 10
How Systems Fail
Module one's mathematics cashing out as real outages: the utilisation curve you already met, retry storms, cascading and correlated failure, and shedding load on purpose.
5 lessons · 3 videos · 3h 13m
- 10.01
The Curve, Collected
Recognise the 1/(1-utilisation) curve as the shape underneath saturation, retries and queue growth alike.
- 10.02
Retry Storms
Explain why backoff alone does not stop a herd and why jitter is the part that decorrelates it.
- 10.03
Cascading Failure
Trace how one slow dependency becomes a whole-system outage, and where the independence assumption broke.
- 10.04
Backpressure
Shed load deliberately, and read latency = A + B x concurrency as the same curve from Module 1.
- 10.05
Correlated Failure
Find the shared dependency that makes two 'independent' components fail together.