Created
October 30, 2022 13:35
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| import { repeat } from 'rxjs'; | |
| @Injectable({ providedIn: 'root' }) | |
| export class MetricsService { | |
| private http = inject(HttpClient); | |
| getMetrics() { | |
| return this.http.get('https://metrics') | |
| .pipe( | |
| repeat({ delay: 30_000 }), | |
| // 👇 | |
| retry(3), | |
| // 👇 | |
| retry({ | |
| count: 3, | |
| delay: 1000 | |
| }), | |
| // 👇 | |
| retry({ | |
| count: 3, | |
| delay: (error, count) => { | |
| // Retry forever, but with an exponential step-back | |
| // maxing out at 1 minute. | |
| return timer(Math.min(60000, 2 ^ count * 1000)) | |
| }, | |
| }) | |
| ) | |
| } | |
| } |
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Thanks for a great example (as always), it helped me migrate from retryWhen()!
However, I believe you have a small error on line 24. The ^ operator is bitwise XOR (I think), and you should use Math.pow() instead.
It threw me off looking into this, so I guess it could confuse others as well :-)