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SvelteKit + Cloudflare — Create an API Endpoint
- Cloudflare Workers are serverless functions that run on Cloudflare’s edge network, allowing execution of JavaScript or TypeScript on the server side closer to users.
- When integrated with SvelteKit, Workers are useful for handling sensitive operations like database access and processing API keys while maintaining frontend security.
- To create a backend function in SvelteKit, add a route with a +server.ts file containing server-side code to keep secrets safe from clients.
- SvelteKit suggests using the route /api to store server-side functions and set this up by creating folders and files accordingly.
- An API route in SvelteKit can handle standard HTTP methods such as GET and POST for processing requests.
- For GET requests, data is typically extracted from search parameters, processed, and returned as JSON.
- For POST requests, data is received from the body of the request.
- Data for server-side functions can be stored in src/lib to reduce latency by eliminating the need to import client-side data.
- Testing can be done locally or by deploying the API endpoint to Cloudflare and calling it using curl for GET or POST requests.
- The server.ts file ensures that the code runs only on the server side without being sent to the client.
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