Imagine a situation where a user has 10 points. When they click a button, an ajax call is made to the server to update the user's points after they have been used. The server should send back 9 points, which is functioning correctly on all browsers except Internet Explorer. Upon further investigation, I discovered that IE is not even sending the request, but rather caching it. How can this issue be resolved?
Thank you in advance!
For those who are able to manipulate the server code, it is advisable to configure the necessary headers to prevent caching.
Here are the headers to set:
Cache-Control: no-store
Pragma: no-cache
One potential method is to create an HTTP interceptor that adds a timestamp to requests for URLs that have already been processed.
@Injectable()
export class CustomHttpInterceptor extends HttpInterceptor {
urls: {string:string} = {};
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
const url = req.url;
if (this.urls[url]) {
let params = req.params;
if (!params) {
params = new HttpParams();
}
params = params.set('timestamp', (new Date()).getTime().toString());
req = req.clone({ params: params });
}
return next.handle(req).pipe(
tap(() => {
this.urls[url] = true;
})
);
}
}
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