fix: remove in-memory cache to fix multi-instance status inconsistency

TimeOffApp.ts

@@ -20,7 +20,6 @@ import { TimeOffService } from './services/TimeOffService';
 import { AppNotifier } from './notifiers/AppNotifier';
 import { PostMessageSentHandler } from './handlers/PostMessageSentHandler';
 import { TimeOffRepository } from './repositories/TimeOffRepository';
-import { TimeOffCache } from './TimeOffCache';
 import { UserService } from './services/UserService';
 import { APP_SETTINGS, DEFAULT_TIME_OFF_REPLY_COOLDOWN_HOURS } from './helpers/AppSettings';
 
@@ -49,7 +48,6 @@ export class TimeOffApp extends App implements IPostMessageSent {
 		_environmentRead: IEnvironmentRead,
 		_configurationModify: IConfigurationModify,
 	): Promise<boolean> {
-		TimeOffCache.getInstance().invalidateCache();
 		return Promise.resolve(true);
 	}
 

services/TimeOffService.ts

@@ -1,35 +1,15 @@
 import { ITimeOff } from '../interfaces/ITimeOff';
 import { ITimeOffRepository } from '../repositories/ITimeOffRepository';
-import { TimeOffCache } from '../TimeOffCache';
 import { ITimeOffService } from './ITimeOffService';
 
 export class TimeOffService implements ITimeOffService {
 	constructor(private readonly repository: ITimeOffRepository) {}
 
 	public async saveTimeOff(timeOff: ITimeOff): Promise<boolean> {
-		const success = await this.repository.save(timeOff);
-
-		if (success) {
-			const cache = TimeOffCache.getInstance();
-			cache.invalidateUser(timeOff.coreUserId);
-			cache.set(timeOff.coreUserId, timeOff);
-		}
-
-		return success;
+		return this.repository.save(timeOff);
 	}
 
 	public async getTimeOffByUserId(coreUserId: string): Promise<ITimeOff | undefined> {
-		const cache: TimeOffCache = TimeOffCache.getInstance();
-		let timeOffData: ITimeOff | undefined = cache.get(coreUserId);
-
-		if (!timeOffData) {
-			timeOffData = await this.repository.findByUserId(coreUserId);
-
-			if (timeOffData) {
-				cache.set(coreUserId, timeOffData);
-			}
-		}
-
-		return timeOffData;
+		return this.repository.findByUserId(coreUserId);
 	}
 }