Mmastodon WorldImmigration first seen 23 h ago, last 1 h ago, peak #10
Shadow mode should be a default in software deployments
Original: 🆕 Shadow mode as a default, not a luxury Run the new implementation beside the old on real traffic, with every side effe
A software engineering writer argues that shadow mode—running a new implementation alongside the old one on real traffic while suppressing its side effects—should be standard practice rather than an optional extra. He says contract tests only prove a system's shape, while shadow mode proves actual behaviour. The post recommends teams compare new and old code paths on live data before switching over.
Why now: Developers are discussing safer deployment practices and risk reduction in production systems.
Evidence
- 🆕 Shadow mode as a default, not a luxury Run the new implementation beside the old on real traffic, with every side effect suppressed. Contract tests prove the shape; shadow mode proves behaviour. Read it → https:// rj-cooper.co.uk/posts/shadow-m ode-as-a-default-not-a-luxury/… · RichardCooper@infosec.exchange · 4
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