Adding a Booking Flow to a Next.js App with a REST API

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Building a booking page in Next.js is simple on the frontend, but the backend scheduling logic, which must handle staff availability, service durations, existing bookings, buffers, and race conditions, is where projects grow complex. The guide proposes offloading that logic to a booking API so developers can focus on the frontend. A working booking flow has four parts: a service catalog, real-time availability, a cart and checkout, and post-booking management such as rescheduling and cancellation. The example uses the Opencals API with the @opencals/storefront-sdk package on Next.js 14+ and Node 18+. The API key must stay server-side, since it can create real bookings and payments, so all calls go through Route Handlers or Server Actions.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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