LLM API Gateway on
Cloudflare Workers

export default { async fetch(request, env, ctx) { // 解析请求 const url = new URL(request.url); const body = await request.json(); // 检查缓存 const cacheKey = new Request(url, request); const cache = caches.default; let response = await cache.match(cacheKey); if (response) { return response; // 缓存命中 } // 路由到AI后端 const aiResponse = await fetch('https://api.openai.com/v1/chat/completions', { method: 'POST', headers: { 'Authorization': `Bearer ${env.OPENAI_KEY}`, 'Content-Type': 'application/json' }, body: JSON.stringify(body) }); // 缓存响应 ctx.waitUntil(cache.put(cacheKey, aiResponse.clone())); return aiResponse; } };