Edge Compute vs Serverless vs VDS Maliyet Esigi Hesaplayici

Altyapi ve Maliyet Optimizasyon Onerileri

/**
 * Cloudflare Worker — Edge Reverse Proxy & Cache Layer
 * Kimlik dogrulama, bot korumasi ve onbellek ucta (Edge) yapilir;
 * Agir istekler sabit fiyatli VDS Origin sunucusuna iletilir.
 */
export default {
  async fetch(request, env, ctx) {
    const url = new URL(request.url);

    // 1. Edge Static & Read-Only Cache Kontrolu
    const cache = caches.default;
    let response = await cache.match(request);
    if (response) {
      return response;
    }

    // 2. Basit Edge Auth / API Anahtari Dogrulamasi
    const apiKey = request.headers.get("x-api-key");
    if (url.pathname.startsWith("/v1/secure/") && !apiKey) {
      return new Response(JSON.stringify({ error: "Yetkisiz istek" }), {
        status: 401,
        headers: { "content-type": "application/json" },
      });
    }

    // 3. VDS Origin Sunucusuna Yonlendirme (I/O ucretsizdir)
    const originUrl = new URL(request.url);
    originUrl.hostname = "api.siteniz.com";

    const modifiedRequest = new Request(originUrl, {
      method: request.method,
      headers: request.headers,
      body: request.body,
    });
    modifiedRequest.headers.set("X-Forwarded-Host", url.hostname);
    modifiedRequest.headers.set("CF-Connecting-IP", request.headers.get("cf-connecting-ip") || "");

    response = await fetch(modifiedRequest, {
      cf: {
        cacheTtl: 300,
        cacheEverything: request.method === "GET",
      },
    });

    return response;
  },
};