CODING-FUNDAMENTALS5 MIN READ
Sort Config, Constants, and Secrets
Classify values by whether they are code constants, deploy config, or secrets.
Place each value where it belongs for a typical web service. Protected secret Deploy config Code-owned constant Database password used by production app instances PAYMENTS_BASE_URL differs between staging and production Maximum password length required by the product spec Webhook signing secret from a payment provider Feature flag enabling a beta workflow for one environment The list of supported invoice statuses in the domain model classification
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