Testing on Production, deep backend edition
summary
Covers techniques for safely testing backend services in production at bol.com (logistics and purchasing domains) to catch unknowns that pre-merge testing and staging miss. Describes alternatives to A/B and canary releases—specifically shadow traffic and dry runs, controlled experiments, and “survival of the fittest”—and how to apply them and their caveats when correctness and complex recovery are primary concerns.
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chapters (13)
- 0:00Start
- 1:36Context
- 6:38Shadow Transactions
- 7:13Shadow - new algo
- 7:53Functionally tested ISOLATION STAGING
- 10:21Database Change
- 11:51ID Generation
- 13:34Shadow across systems
- 16:23One toggle to rule them all
- 17:58Golden Order a.k.a. "Lucky" customer
- 23:35Survival of the fittest
- 26:03Testing Environments
- 28:24Best used together
