How to make an http call every 2 minutes with RXJS? : <p>I have a service that will make a call to my rest service every 2 minutes. On my service I have the following function</p>

<pre><code>  getNotifications(token: string) {
     const body = 'xxxxxxxxx=' + token;
     return this.http.post('/rest/ssss/ddddddd/notificationcount', body, this.options)
          .map((res) =&gt; res.json());
  }
</code></pre>

<p>On my component I call my service function to call the API.</p>

<pre><code>this.notificationService.getNotifications(this.token).subscribe((data) =&gt; {
  console.log(data);
});
</code></pre>

<p>I want to make this call every 2 minutes, what is the best way to do this?</p>
