Fetch API & cancel duplicate API & cache API

Fetch API & cancel duplicate API & cache API

const usersCache = new Map<string, User>();

const getUserById = async (userId: string): Promise<User> => {
  if (!usersCache.has(userId)) {
    const user = await request.get(`https://users-service/${userId}`);
    usersCache.set(userId, user);
  }

  return usersCache.get(userId);
};

refs

https://www.jonmellman.com/posts/promise-memoization

https://mp.weixin.qq.com/s/U-K7GqdyMmSG0OZ1Mr64Wg

---

---

©xgqfrms 2012-2020

www.cnblogs.com 发布文章使用：只允许注册用户才可以访问！

原创文章，版权所有©️xgqfrms, 禁止转载 🈲️，侵权必究⚠️！

---