详解基于 Node.js 的轻量级云函数功能实现

const cacheFuncs = {};
// ...get script
cacheFuncs[funcName] = {
  updateTime: Date.now(),
  script,
};
// cache time: 60 sec
const cacheFunc = cacheFuncs[cacheKey];
if (cacheFunc && (Date.now() - cacheFunc.updateTime) <= 60000) {
  const sandbox = { /*...*/ }
  vm.createContext(sandbox);
  cacheFunc.script.runInContext(sandbox);
  const data = await saandbox.promise;
  return data;
} else {
  // renew cache
}