Capstone - Order Fulfillment, Built Twice

Most capstones in this course build one system. This one builds the same system twice: order fulfillment with two-phase commit, then again as a saga: and then injects the same three failures into each build and compares the wreckage. Because that's what this module actually teaches: not "which pattern is better," but whose failure modes your business can live with.

At each drill, stop at the diagnose prompt and predict the wreckage before reading it.

The Brief

The store's checkout, one more time, now with the module's full attention: