trying to get request handling in the right order

src/app/core/cache/builders/remote-data-build.service.ts

@@ -113,6 +113,7 @@ export class RemoteDataBuildService {
       href$ = observableOf(href$);
     }
 
+    href$.subscribe(href => console.log('request url: ', href));
     const requestEntry$ = href$.pipe(getRequestFromRequestHref(this.requestService));
     const tDomainList$ = requestEntry$.pipe(
       getResourceLinksFromResponse(),

src/app/core/data/data.service.ts

@@ -1,7 +1,7 @@
 import { HttpClient } from '@angular/common/http';
 
 import { Observable } from 'rxjs';
-import { distinctUntilChanged, filter, find, first, map, mergeMap, switchMap, take } from 'rxjs/operators';
+import { distinctUntilChanged, filter, find, first, map, mergeMap, switchMap, take, tap } from 'rxjs/operators';
 import { Store } from '@ngrx/store';
 
 import { hasValue, isNotEmpty, isNotEmptyOperator } from '../../shared/empty.util';
@@ -184,20 +184,20 @@ export abstract class DataService<T extends CacheableObject> {
    * @return {Observable<RemoteData<PaginatedList<T>>}
    *    Return an observable that emits response from the server
    */
-  protected searchBy(searchMethod: string, options: FindAllOptions = {}, refresh: boolean = false): Observable<RemoteData<PaginatedList<T>>> {
+  protected searchBy(searchMethod: string, options: FindAllOptions = {}): Observable<RemoteData<PaginatedList<T>>> {
 
     const hrefObs = this.getSearchByHref(searchMethod, options);
 
-    hrefObs.pipe(
+    return hrefObs.pipe(
-      find((href: string) => hasValue(href)))
+      find((href: string) => hasValue(href)),
-      .subscribe((href: string) => {
+      switchMap((href: string) => {
-        if (refresh) {
           this.requestService.removeByHrefSubstring(href);
-        }
           const request = new FindAllRequest(this.requestService.generateRequestId(), href, options);
           this.requestService.configure(request, true);
-      });
+          return this.rdbService.buildList<T>(href) as Observable<RemoteData<PaginatedList<T>>>
-    return this.rdbService.buildList<T>(hrefObs) as Observable<RemoteData<PaginatedList<T>>>;
+        }
+      )
+    );
   }
 
   /**

src/app/core/data/relationship.service.ts

@@ -225,7 +225,7 @@ export class RelationshipService extends DataService<Relationship> {
     } else {
       findAllOptions.searchParams = searchParams;
     }
-    return this.searchBy('byLabel', findAllOptions, true);
+    return this.searchBy('byLabel', findAllOptions);
   }
 
   /**

src/app/core/data/request.service.ts

@@ -3,7 +3,7 @@ import { HttpHeaders } from '@angular/common/http';
 
 import { createSelector, MemoizedSelector, select, Store } from '@ngrx/store';
 import { Observable, race as observableRace } from 'rxjs';
-import { filter, map, mergeMap, take } from 'rxjs/operators';
+import { filter, map, mergeMap, switchMap, take } from 'rxjs/operators';
 import { cloneDeep, remove } from 'lodash';
 
 import { AppState } from '../../app.reducer';