BEFORE YOU GO LIVE
DOCTRINE No. 17Release

Big-bang deployments are a prayer, not a plan

Feature flags split "deploy the code" from "turn on the feature" into two separate decisions — so you never have to bet an entire release on one moment.

A big-bang deployment ships everything live at once, to everyone, and then you wait to see what breaks. If it's a bug, you're rolling back under pressure while users watch. If it's an AI feature, you're in worse shape — AI behavior keeps shifting, and no staging environment fully predicts how it performs against real inputs from real users. The fix isn't more testing. It's not needing to bet everything on one deploy in the first place.

That's what feature flags buy you: deploy on Monday, release on Thursday, and if something's wrong, flip a switch instead of rolling back a release.

Two checks from this doctrine

Real value, not a teaser — two of the 5 checks in full. The rest are in the one-pager.

Ship new code off by default.Every feature deploys behind a flag that starts disabled. The code is live in production, but nobody sees it until you decide they do.
Roll out by percentage, and watch before you ramp.Turn a feature on for 1% of traffic, check the metrics, then widen it — 10%, 50%, everyone. If something breaks at any stage, you catch it against a small blast radius instead of your whole user base.
The full Doctrine No. 17: Feature Flags one-pager has all 5 checks — 3 more beyond the two above — laid out as a branded, printable page you can run down before you ship. Get it for $5 →
Deploying and releasing are two different decisions. Don't let one deploy make both of them for you.
The full one-pager

Doctrine No. 17: Feature Flags

All 5 checks on one branded, printable page — the run-it-yourself list for release before you go live. Instant PDF download, yours to keep.

Get this doc — $5 Or get all 23 docs + the checklist — $29 →

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All 23 doctrinesBrowse the full Go-Live Doctrine index. The storeSingle docs $5, the Season 1 bundle $29, or a $199 audit. Free checklist23 production-readiness checks with a GO / NO-GO verdict.