fix(caching): properly respect ttl for all cache levels

ts/levelcache.classes.cache.memorymanager.ts

@@ -38,7 +38,13 @@ export class CacheMemoryManager extends AbstractCache {
     }
   }
 
-  public async clean() {
+  public async deleteCacheEntryByKey(keyArg: string) {
+    this.fastMap.removeFromMap(keyArg);
+  }
+
+  public async cleanOutdated() {}
+
+  public async cleanAll() {
     this.fastMap.clean();
   }
 }