使用 Cloudflare Workers 实现负载均衡

终极白嫖怪，这次是用 Cloudflare Workers 实现网站 / API 的负载均衡。

一天用一台，轮着用

废话少说，直接贴代码：

addEventListener('fetch', event => {
  event.respondWith(handleRequest(event.request))
})

const servers = [
  '1.api.jonbgua.com', '2.api.jonbgua.com'
]

async function handleRequest(request) {
  // new URL object to play with,
  // based on the one being requested.
  var url = new URL(request.url)
  // 今天用哪个服务器?
  var d = new Date()
  const day = d.getDate()
  // set hostname to the place we're proxying requests from
  url.hostname = servers[day%servers.length]
  // pass the modified url back to the request,
  let response = await fetch(url, request)
  return response;
}