[RxJS] Avoid mulit post requests by using shareReplay()

2023年1月7日 137次阅读 来源: Zhentiw

With the shareReplay operator in place, we would no longer fall into the situation where we have accidental multiple HTTP requests.

And this covers the main use cases for doing the most typical read and modification operations, that we would implement while doing a custom REST API.

 

import 'rxjs/add/operator/shareReplay';

  signUp(email: string, password: string) {
    return this.http.post<User>('/api/signup', {
      email,
      password
    }).shareReplay() // make sure that request was cached and it return observable
      .do((user) => this.subject.next(user));
  }

 

shareReplay was added to RxJS V5.4

 

More informaiton about shareReplay.

    原文作者：Zhentiw
    原文地址: https://www.cnblogs.com/Answer1215/p/7266513.html
    本文转自网络文章，转载此文章仅为分享知识，如有侵权，请联系博主进行删除。
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