A small-team workflow for maintainable changes
A repeatable development loop for clarifying a change, understanding its context, implementing it in small slices, and recording what was learned.
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Make implementation decisions you can maintain.
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Add payments without trusting the checkout redirect
A provider-neutral checklist for hosted checkout, verified payment events, subscription states, refunds, and duplicate-safe fulfillment.
Choose a simple architecture for a small web app
Choose boundaries and deployment shape around the product's real constraints, then record the decision and revisit it when evidence changes.
Design a database schema that can change safely
A practical path from product workflows to tables, constraints, migrations, indexes, and recoverable backups for a small application.
Design an API contract before wiring up screens
Define requests, responses, validation, errors, and access rules so the client and server agree on behavior from the first feature.
Handle file uploads as untrusted input
A safe upload flow for size and type limits, private object storage, authorization, download links, quotas, and deletion.
Integrate an external service with webhooks
Build a dependable event receiver that authenticates deliveries, handles retries and duplicates, and gives you a path to recover missed work.
Make transactional email dependable
Separate essential product messages from marketing, set up sender authentication, and build retries, templates, and delivery visibility.
Move slow work into reliable background jobs
Decide what belongs in a worker, then make jobs idempotent, bounded, observable, and safe to retry after partial failure.
Separate authentication from authorization
Design login, sessions, and access checks as distinct responsibilities, with practical rules for protecting each resource and action.