mediumBuilding OAuth for AI Subscriptions at 15
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api•Jan 8, 2026
My Node.js API Best Practices in 2025
As Node.js has matured into infrastructure, expectations for API design have increased. To build high-quality Node.js APIs, follow these best practices, including treating the runtime as a constraint, using contract-first design, and keeping controllers thin and boring.
devTo
Original source
Key summary
This article discusses best practices for building and maintaining Node.js APIs in 2025, focusing on performance, safety, developer experience, and fewer 'footguns'. It emphasizes the importance of treating the runtime as a constraint, being explicit about Node versions, and using contract-first design.
TL;DR
- Treat Node.js runtime as a constraint, not a given
- Be explicit about Node version and lock it in CI, production, and documentation
- Use contract-first design for APIs, including request and response shapes
- Validate API inputs at runtime for security
- Keep controllers thin and boring, pushing business logic into services or domain modules
- Be intentional about concurrency and async boundaries
- Use structured, consistent, and meaningful logging with enough context to debug errors
This content is automatically summarized using AI. For full context, always refer to the original article.
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