diff --git a/packages/backend/server/src/core/doc/history.ts b/packages/backend/server/src/core/doc/history.ts
index c0b64d7857..0118280b61 100644
--- a/packages/backend/server/src/core/doc/history.ts
+++ b/packages/backend/server/src/core/doc/history.ts
@@ -102,7 +102,9 @@ export class DocHistoryManager {
           description: 'How many times the snapshot history created',
         })
         .add(1);
-      this.logger.log(`History created for ${id} in workspace ${workspaceId}.`);
+      this.logger.debug(
+        `History created for ${id} in workspace ${workspaceId}.`
+      );
     }
   }
 
diff --git a/packages/backend/server/src/core/quota/storage.ts b/packages/backend/server/src/core/quota/storage.ts
index 8ba20532bb..b15e7f8dc3 100644
--- a/packages/backend/server/src/core/quota/storage.ts
+++ b/packages/backend/server/src/core/quota/storage.ts
@@ -72,10 +72,12 @@ export class QuotaManagementService {
       const total = usedSize + recvSize;
       // only skip total storage check if workspace has unlimited feature
       if (total > quota && !unlimited) {
-        this.logger.log(`storage size limit exceeded: ${total} > ${quota}`);
+        this.logger.warn(`storage size limit exceeded: ${total} > ${quota}`);
         return true;
       } else if (recvSize > blobLimit) {
-        this.logger.log(`blob size limit exceeded: ${recvSize} > ${blobLimit}`);
+        this.logger.warn(
+          `blob size limit exceeded: ${recvSize} > ${blobLimit}`
+        );
         return true;
       } else {
         return false;
diff --git a/packages/backend/server/src/fundamentals/cache/interceptor.ts b/packages/backend/server/src/fundamentals/cache/interceptor.ts
index c9d326aaf6..e22f5ae715 100644
--- a/packages/backend/server/src/fundamentals/cache/interceptor.ts
+++ b/packages/backend/server/src/fundamentals/cache/interceptor.ts
@@ -42,7 +42,7 @@ export class CacheInterceptor implements NestInterceptor {
     if (preventKey) {
       const key = await this.getCacheKey(ctx, preventKey);
       if (key) {
-        this.logger.debug(`cache ${key} staled`);
+        this.logger.verbose(`cache ${key} staled`);
         await this.cache.delete(key);
       }
 
@@ -60,10 +60,10 @@ export class CacheInterceptor implements NestInterceptor {
     const cachedData = await this.cache.get(cacheKey);
 
     if (cachedData) {
-      this.logger.debug(`cache ${cacheKey} hit`);
+      this.logger.verbose(`cache ${cacheKey} hit`);
       return of(cachedData);
     } else {
-      this.logger.debug(`cache ${cacheKey} miss`);
+      this.logger.verbose(`cache ${cacheKey} miss`);
       return next.handle().pipe(
         mergeMap(async result => {
           await this.cache.set(cacheKey, result);
diff --git a/packages/backend/server/src/plugins/copilot/providers/index.ts b/packages/backend/server/src/plugins/copilot/providers/index.ts
index 99e8d43cd4..addc873e3e 100644
--- a/packages/backend/server/src/plugins/copilot/providers/index.ts
+++ b/packages/backend/server/src/plugins/copilot/providers/index.ts
@@ -52,7 +52,7 @@ export function registerCopilotProvider<
       );
     }
     const instance = new provider(providerConfig as C);
-    logger.log(
+    logger.debug(
       `Copilot provider ${type} registered, capabilities: ${provider.capabilities.join(', ')}`
     );
 
diff --git a/packages/backend/server/src/plugins/redis/mutex.ts b/packages/backend/server/src/plugins/redis/mutex.ts
index 496fdecf0b..7b6edfa6b2 100644
--- a/packages/backend/server/src/plugins/redis/mutex.ts
+++ b/packages/backend/server/src/plugins/redis/mutex.ts
@@ -42,7 +42,7 @@ export class RedisMutexLocker implements ILocker {
 
   async lock(owner: string, key: string): Promise<Lock> {
     const lockKey = `MutexLock:${key}`;
-    this.logger.debug(`Client ${owner} is trying to lock resource ${key}`);
+    this.logger.verbose(`Client ${owner} is trying to lock resource ${key}`);
 
     const success = await this.redis.sendCommand(
       new Command('EVAL', [lockScript, '1', lockKey, owner])