diff --git a/.env b/.env
index cf5abf7..6378a24 100644
--- a/.env
+++ b/.env
@@ -4,7 +4,8 @@
 
 # Core Application Settings
 NODE_ENV=development
-LOG_LEVEL=error
+LOG_LEVEL=warn
+LOG_HIDE_OBJECT=true
 
 # Data Service Configuration
 DATA_SERVICE_PORT=2001
diff --git a/apps/data-service/src/index.ts b/apps/data-service/src/index.ts
index 77c91d1..19440a6 100644
--- a/apps/data-service/src/index.ts
+++ b/apps/data-service/src/index.ts
@@ -1,5 +1,5 @@
 // Framework imports
-import { initializeConfig } from '@stock-bot/config';
+import { initializeServiceConfig } from '@stock-bot/config';
 import { Hono } from 'hono';
 import { cors } from 'hono/cors';
 // Library imports
@@ -12,7 +12,7 @@ import { ProxyManager } from '@stock-bot/utils';
 // Local imports
 import { exchangeRoutes, healthRoutes, queueRoutes } from './routes';
 
-const config = initializeConfig();
+const config = initializeServiceConfig();
 console.log('Data Service Configuration:', JSON.stringify(config, null, 2));
 const serviceConfig = config.service;
 const databaseConfig = config.database;
@@ -24,6 +24,7 @@ if (config.log) {
     logConsole: true,
     logFile: false,
     environment: config.environment,
+    hideObject: config.log.hideObject,
   });
 }
 
diff --git a/libs/config/src/loaders/env.loader.ts b/libs/config/src/loaders/env.loader.ts
index a3eb6ba..3e703f8 100644
--- a/libs/config/src/loaders/env.loader.ts
+++ b/libs/config/src/loaders/env.loader.ts
@@ -174,6 +174,7 @@ export class EnvLoader implements ConfigLoader {
       // Log mappings (using LOG_ prefix for all)
       LOG_LEVEL: ['log', 'level'],
       LOG_FORMAT: ['log', 'format'],
+      LOG_HIDE_OBJECT: ['log', 'hideObject'],
       LOG_LOKI_ENABLED: ['log', 'loki', 'enabled'],
       LOG_LOKI_HOST: ['log', 'loki', 'host'],
       LOG_LOKI_PORT: ['log', 'loki', 'port'],
diff --git a/libs/config/src/schemas/index.ts b/libs/config/src/schemas/index.ts
index 51dc699..eed8827 100644
--- a/libs/config/src/schemas/index.ts
+++ b/libs/config/src/schemas/index.ts
@@ -1,12 +1,12 @@
 export * from './base.schema';
 export * from './database.schema';
-export * from './service.schema';
 export * from './provider.schema';
+export * from './service.schema';
 
 import { z } from 'zod';
 import { baseConfigSchema, environmentSchema } from './base.schema';
-import { queueConfigSchema, httpConfigSchema } from './service.schema';
 import { providerConfigSchema, webshareProviderConfigSchema } from './provider.schema';
+import { httpConfigSchema, queueConfigSchema } from './service.schema';
 
 // Flexible service schema with defaults
 const flexibleServiceConfigSchema = z.object({
@@ -74,6 +74,7 @@ const flexibleDatabaseConfigSchema = z.object({
 const flexibleLogConfigSchema = z.object({
   level: z.enum(['trace', 'debug', 'info', 'warn', 'error', 'fatal']).default('info'),
   format: z.enum(['json', 'pretty']).default('json'),
+  hideObject: z.boolean().default(false),
   loki: z.object({
     enabled: z.boolean().default(false),
     host: z.string().default('localhost'),
diff --git a/libs/logger/src/types.ts b/libs/logger/src/types.ts
index 9e35776..557f9ae 100644
--- a/libs/logger/src/types.ts
+++ b/libs/logger/src/types.ts
@@ -26,4 +26,5 @@ export interface LoggerConfig {
   lokiUser?: string;
   lokiPassword?: string;
   environment?: string;
+  hideObject?: boolean;
 }
diff --git a/libs/mongodb-client/src/singleton.ts b/libs/mongodb-client/src/singleton.ts
index 5806b80..8bd84d5 100644
--- a/libs/mongodb-client/src/singleton.ts
+++ b/libs/mongodb-client/src/singleton.ts
@@ -7,19 +7,38 @@ import type { Db } from 'mongodb';
  * Provides global access to a single MongoDB connection
  */
 let instance: MongoDBClient | null = null;
+let initPromise: Promise<MongoDBClient> | null = null;
 
 /**
  * Initialize the singleton MongoDB client
  */
 export async function connectMongoDB(config?: MongoDBClientConfig): Promise<MongoDBClient> {
-  if (!instance) {
-    if (!config) {
-      throw new Error('MongoDB client not initialized. Call connectMongoDB(config) first.');
-    }
-    instance = new MongoDBClient(config);
-    await instance.connect();
+  if (instance) {
+    return instance;
+  }
+
+  if (initPromise) {
+    return initPromise;
+  }
+
+  if (!config) {
+    throw new Error('MongoDB client not initialized. Call connectMongoDB(config) first.');
+  }
+
+  initPromise = (async () => {
+    const client = new MongoDBClient(config);
+    await client.connect();
+    instance = client;
+    return client;
+  })();
+
+  try {
+    return await initPromise;
+  } catch (error) {
+    // Reset promise on error so next call can retry
+    initPromise = null;
+    throw error;
   }
-  return instance;
 }
 
 /**
@@ -59,4 +78,5 @@ export async function disconnectMongoDB(): Promise<void> {
     await instance.disconnect();
     instance = null;
   }
+  initPromise = null;
 }
\ No newline at end of file