diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/api/RepositoryBranchApiController.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/api/RepositoryBranchApiController.java
index 10dd9081..1ec9d4cf 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/api/RepositoryBranchApiController.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/api/RepositoryBranchApiController.java
@@ -28,25 +28,24 @@ public class RepositoryBranchApiController extends BaseController<RepositoryBran
     @Resource
     private IRepositoryBranchService repositoryBranchService;
 
-    @Operation(summary = "同步Git分支", description = "支持三种同步模式：1)只传externalSystemId-全量同步 2)传externalSystemId+repoGroupId-同步仓库组 3)传externalSystemId+repoGroupId+repoProjectId-同步单个项目")
+    @Operation(summary = "同步Git分支", description = "异步同步，支持三种模式：1)只传externalSystemId-全量同步 2)传externalSystemId+repoGroupId-同步仓库组 3)传externalSystemId+repoGroupId+repoProjectId-同步单个项目")
     @PostMapping("/sync")
-    public Response<Integer> sync(
+    public Response<Void> sync(
         @Parameter(description = "外部系统ID", required = true) @RequestParam Long externalSystemId,
         @Parameter(description = "仓库组ID（可选）", required = false) @RequestParam(required = false) Long repoGroupId,
         @Parameter(description = "仓库项目ID（可选，传此参数时repoGroupId必传）", required = false) @RequestParam(required = false) Long repoProjectId
     ) {
-        Integer count;
         if (repoProjectId != null) {
             // 同步单个项目
-            count = repositoryBranchService.syncBranches(externalSystemId, repoGroupId, repoProjectId);
+            repositoryBranchService.syncBranches(externalSystemId, repoGroupId, repoProjectId);
         } else if (repoGroupId != null) {
             // 同步仓库组
-            count = repositoryBranchService.syncBranches(externalSystemId, repoGroupId);
+            repositoryBranchService.syncBranches(externalSystemId, repoGroupId);
         } else {
             // 全量同步
-            count = repositoryBranchService.syncBranches(externalSystemId);
+            repositoryBranchService.syncBranches(externalSystemId);
         }
-        return Response.success(count);
+        return Response.success();
     }
 
     @Override
diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/api/RepositoryGroupApiController.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/api/RepositoryGroupApiController.java
index b883c468..805d55ca 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/api/RepositoryGroupApiController.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/api/RepositoryGroupApiController.java
@@ -28,13 +28,13 @@ public class RepositoryGroupApiController extends BaseController<RepositoryGroup
     @Resource
     private IRepositoryGroupService repositoryGroupService;
 
-    @Operation(summary = "同步Git仓库组", description = "同步指定外部系统的所有仓库组")
+    @Operation(summary = "同步Git仓库组", description = "异步同步指定外部系统的所有仓库组，立即返回")
     @PostMapping("/sync")
-    public Response<Integer> sync(
+    public Response<Void> sync(
         @Parameter(description = "外部系统ID", required = true) @RequestParam Long externalSystemId
     ) {
-        Integer count = repositoryGroupService.syncGroups(externalSystemId);
-        return Response.success(count);
+        repositoryGroupService.syncGroups(externalSystemId);
+        return Response.success();
     }
 
     @Override
diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/api/RepositoryProjectApiController.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/api/RepositoryProjectApiController.java
index e223ce0b..6ff7037b 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/api/RepositoryProjectApiController.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/api/RepositoryProjectApiController.java
@@ -28,21 +28,20 @@ public class RepositoryProjectApiController extends BaseController<RepositoryPro
     @Resource
     private IRepositoryProjectService repositoryProjectService;
 
-    @Operation(summary = "同步Git项目", description = "支持两种同步模式：1)只传externalSystemId-全量同步 2)传externalSystemId+repoGroupId-同步单个仓库组")
+    @Operation(summary = "同步Git项目", description = "异步同步，支持两种模式：1)只传externalSystemId-全量同步 2)传externalSystemId+repoGroupId-同步单个仓库组")
     @PostMapping("/sync")
-    public Response<Integer> sync(
+    public Response<Void> sync(
         @Parameter(description = "外部系统ID", required = true) @RequestParam Long externalSystemId,
         @Parameter(description = "仓库组ID（可选）", required = false) @RequestParam(required = false) Long repoGroupId
     ) {
-        Integer count;
         if (repoGroupId != null) {
             // 同步单个仓库组
-            count = repositoryProjectService.syncProjects(externalSystemId, repoGroupId);
+            repositoryProjectService.syncProjects(externalSystemId, repoGroupId);
         } else {
             // 全量同步
-            count = repositoryProjectService.syncProjects(externalSystemId);
+            repositoryProjectService.syncProjects(externalSystemId);
         }
-        return Response.success(count);
+        return Response.success();
     }
 
     @Override
diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/IRepositoryBranchService.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/IRepositoryBranchService.java
index 02ad885d..677b0272 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/IRepositoryBranchService.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/IRepositoryBranchService.java
@@ -11,31 +11,28 @@ import com.qqchen.deploy.backend.framework.service.IBaseService;
 public interface IRepositoryBranchService extends IBaseService<RepositoryBranch, RepositoryBranchDTO, RepositoryBranchQuery, Long> {
 
     /**
-     * 同步指定外部系统下的所有分支（全量同步）
+     * 同步指定外部系统下的所有分支（异步执行，全量同步）
      *
      * @param externalSystemId 外部系统ID
-     * @return 同步的分支数量
      */
-    Integer syncBranches(Long externalSystemId);
+    void syncBranches(Long externalSystemId);
 
     /**
-     * 同步指定仓库组下所有项目的分支
+     * 同步指定仓库组下所有项目的分支（异步执行）
      *
      * @param externalSystemId 外部系统ID
      * @param repoGroupId 仓库组ID
-     * @return 同步的分支数量
      */
-    Integer syncBranches(Long externalSystemId, Long repoGroupId);
+    void syncBranches(Long externalSystemId, Long repoGroupId);
 
     /**
-     * 同步指定项目的分支
+     * 同步指定项目的分支（异步执行）
      *
      * @param externalSystemId 外部系统ID
      * @param repoGroupId 仓库组ID
      * @param repoProjectId 仓库项目ID
-     * @return 同步的分支数量
      */
-    Integer syncBranches(Long externalSystemId, Long repoGroupId, Long repoProjectId);
+    void syncBranches(Long externalSystemId, Long repoGroupId, Long repoProjectId);
 
     /**
      * 统计指定外部系统下的分支数量
diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/IRepositoryGroupService.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/IRepositoryGroupService.java
index 88131a94..dd1d5d06 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/IRepositoryGroupService.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/IRepositoryGroupService.java
@@ -13,12 +13,11 @@ import java.util.List;
 public interface IRepositoryGroupService extends IBaseService<RepositoryGroup, RepositoryGroupDTO, RepositoryGroupQuery, Long> {
     
     /**
-     * 同步指定外部系统的所有仓库组（包含同步历史记录）
+     * 同步指定外部系统的所有仓库组（异步执行，包含同步历史记录）
      *
      * @param externalSystemId 外部系统ID
-     * @return 同步的仓库组数量
      */
-    Integer syncGroups(Long externalSystemId);
+    void syncGroups(Long externalSystemId);
 
     /**
      * 统计外部系统的仓库组数量
diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/IRepositoryProjectService.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/IRepositoryProjectService.java
index 80d28f90..e3b7a9f1 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/IRepositoryProjectService.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/IRepositoryProjectService.java
@@ -13,21 +13,19 @@ import java.util.List;
 public interface IRepositoryProjectService extends IBaseService<RepositoryProject, RepositoryProjectDTO, RepositoryProjectQuery, Long> {
 
     /**
-     * 同步指定外部系统下的所有项目（全量同步）
+     * 同步指定外部系统下的所有项目（异步执行，全量同步）
      *
      * @param externalSystemId 外部系统ID
-     * @return 同步的项目数量
      */
-    Integer syncProjects(Long externalSystemId);
+    void syncProjects(Long externalSystemId);
 
     /**
-     * 同步指定仓库组下的所有项目
+     * 同步指定仓库组下的所有项目（异步执行）
      *
      * @param externalSystemId 外部系统ID
      * @param repoGroupId 仓库组ID
-     * @return 同步的项目数量
      */
-    Integer syncProjects(Long externalSystemId, Long repoGroupId);
+    void syncProjects(Long externalSystemId, Long repoGroupId);
 
     /**
      * 统计指定外部系统下的项目数量
diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryBranchServiceImpl.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryBranchServiceImpl.java
index c32b7153..20e0a42e 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryBranchServiceImpl.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryBranchServiceImpl.java
@@ -21,6 +21,7 @@ import com.qqchen.deploy.backend.deploy.service.IRepositorySyncHistoryService;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.orm.ObjectOptimisticLockingFailureException;
+import org.springframework.scheduling.annotation.Async;
 import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -189,21 +190,24 @@ public class RepositoryBranchServiceImpl extends BaseServiceImpl<RepositoryBranc
     }
 
     @Override
+    @Async
     @Transactional(rollbackFor = Exception.class)
-    public Integer syncBranches(Long externalSystemId) {
-        return doSyncBranches(externalSystemId, null, null);
+    public void syncBranches(Long externalSystemId) {
+        doSyncBranches(externalSystemId, null, null);
     }
 
     @Override
+    @Async
     @Transactional(rollbackFor = Exception.class)
-    public Integer syncBranches(Long externalSystemId, Long repoGroupId) {
-        return doSyncBranches(externalSystemId, repoGroupId, null);
+    public void syncBranches(Long externalSystemId, Long repoGroupId) {
+        doSyncBranches(externalSystemId, repoGroupId, null);
     }
 
     @Override
+    @Async
     @Transactional(rollbackFor = Exception.class)
-    public Integer syncBranches(Long externalSystemId, Long repoGroupId, Long repoProjectId) {
-        return doSyncBranches(externalSystemId, repoGroupId, repoProjectId);
+    public void syncBranches(Long externalSystemId, Long repoGroupId, Long repoProjectId) {
+        doSyncBranches(externalSystemId, repoGroupId, repoProjectId);
     }
 
     /**
@@ -212,9 +216,8 @@ public class RepositoryBranchServiceImpl extends BaseServiceImpl<RepositoryBranc
      * @param externalSystemId 外部系统ID
      * @param repoGroupId 仓库组ID（可选）
      * @param repoProjectId 仓库项目ID（可选）
-     * @return 同步的分支数量
      */
-    private Integer doSyncBranches(Long externalSystemId, Long repoGroupId, Long repoProjectId) {
+    private void doSyncBranches(Long externalSystemId, Long repoGroupId, Long repoProjectId) {
         // 1. 创建同步历史记录
         RepositorySyncHistoryDTO syncHistory = repositorySyncHistoryService.createSyncHistory(externalSystemId, RepositorySyncType.BRANCH);
 
@@ -240,7 +243,7 @@ public class RepositoryBranchServiceImpl extends BaseServiceImpl<RepositoryBranc
             if (projects.isEmpty()) {
                 log.info("No projects found to sync");
                 repositorySyncHistoryService.updateSyncHistory(syncHistory.getId(), ExternalSystemSyncStatus.SUCCESS, null);
-                return 0;
+                return;
             }
             log.info("Found {} projects to sync", projects.size());
 
@@ -339,7 +342,7 @@ public class RepositoryBranchServiceImpl extends BaseServiceImpl<RepositoryBranc
 
             log.info("Successfully synchronized {} branches for external system: {}",
                 totalSyncedBranches.get(), externalSystem.getName());
-            return totalSyncedBranches.get();
+            
         } catch (Exception e) {
             // 9. 更新同步历史为失败
             log.error("Failed to sync branches", e);
diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryGroupServiceImpl.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryGroupServiceImpl.java
index c58fe232..43f1d6c8 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryGroupServiceImpl.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryGroupServiceImpl.java
@@ -19,6 +19,7 @@ import com.qqchen.deploy.backend.framework.exception.BusinessException;
 import com.qqchen.deploy.backend.framework.service.impl.BaseServiceImpl;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.scheduling.annotation.Async;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -52,8 +53,9 @@ public class RepositoryGroupServiceImpl extends BaseServiceImpl<RepositoryGroup,
     private IRepositorySyncHistoryService repositorySyncHistoryService;
 
     @Override
+    @Async
     @Transactional(rollbackFor = Exception.class)
-    public Integer syncGroups(Long externalSystemId) {
+    public void syncGroups(Long externalSystemId) {
         // 1. 创建同步历史记录
         RepositorySyncHistoryDTO groupHistory = repositorySyncHistoryService.createSyncHistory(externalSystemId, RepositorySyncType.GROUP);
 
@@ -67,7 +69,7 @@ public class RepositoryGroupServiceImpl extends BaseServiceImpl<RepositoryGroup,
             if (remoteGroups.isEmpty()) {
                 log.info("No groups found in remote git system: {}", externalSystem.getName());
                 repositorySyncHistoryService.updateSyncHistory(groupHistory.getId(), ExternalSystemSyncStatus.SUCCESS, null);
-                return 0;
+                return;
             }
 
             // 4. 获取本地已存在的仓库组
@@ -106,7 +108,6 @@ public class RepositoryGroupServiceImpl extends BaseServiceImpl<RepositoryGroup,
             
             log.info("Successfully synchronized {} groups for external system: {}", 
                 savedGroups.size(), externalSystem.getName());
-            return savedGroups.size();
             
         } catch (Exception e) {
             // 8. 更新同步历史记录为失败
diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryProjectServiceImpl.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryProjectServiceImpl.java
index 2138cc17..4696853f 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryProjectServiceImpl.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/RepositoryProjectServiceImpl.java
@@ -22,6 +22,7 @@ import com.qqchen.deploy.backend.framework.service.impl.BaseServiceImpl;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.orm.ObjectOptimisticLockingFailureException;
+import org.springframework.scheduling.annotation.Async;
 import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -98,15 +99,17 @@ public class RepositoryProjectServiceImpl extends BaseServiceImpl<RepositoryProj
     }
 
     @Override
+    @Async
     @Transactional(rollbackFor = Exception.class)
-    public Integer syncProjects(Long externalSystemId) {
-        return doSyncProjects(externalSystemId, null);
+    public void syncProjects(Long externalSystemId) {
+        doSyncProjects(externalSystemId, null);
     }
 
     @Override
+    @Async
     @Transactional(rollbackFor = Exception.class)
-    public Integer syncProjects(Long externalSystemId, Long repoGroupId) {
-        return doSyncProjects(externalSystemId, repoGroupId);
+    public void syncProjects(Long externalSystemId, Long repoGroupId) {
+        doSyncProjects(externalSystemId, repoGroupId);
     }
 
     /**
@@ -114,9 +117,8 @@ public class RepositoryProjectServiceImpl extends BaseServiceImpl<RepositoryProj
      *
      * @param externalSystemId 外部系统ID
      * @param repoGroupId 仓库组ID（可选）
-     * @return 同步的项目数量
      */
-    private Integer doSyncProjects(Long externalSystemId, Long repoGroupId) {
+    private void doSyncProjects(Long externalSystemId, Long repoGroupId) {
         // 1. 创建同步历史记录
         RepositorySyncHistoryDTO projectHistory = repositorySyncHistoryService.createSyncHistory(externalSystemId, RepositorySyncType.PROJECT);
 
@@ -139,7 +141,7 @@ public class RepositoryProjectServiceImpl extends BaseServiceImpl<RepositoryProj
             if (groups.isEmpty()) {
                 log.info("No groups found for external system: {}", externalSystem.getName());
                 repositorySyncHistoryService.updateSyncHistory(projectHistory.getId(), ExternalSystemSyncStatus.SUCCESS, null);
-                return 0;
+                return;
             }
             log.info("Found {} groups to sync", groups.size());
 
@@ -251,7 +253,7 @@ public class RepositoryProjectServiceImpl extends BaseServiceImpl<RepositoryProj
             
             log.info("Successfully synced projects. Added {} new projects, processed {} total projects",
                 totalCount.get(), processedProjectIds.size());
-            return totalCount.get();
+            
         } catch (Exception e) {
             // 8. 更新同步历史记录为失败
             repositorySyncHistoryService.updateSyncHistory(projectHistory.getId(), ExternalSystemSyncStatus.FAILED, e.getMessage());
diff --git a/backend/src/main/resources/application.yml b/backend/src/main/resources/application.yml
index 4f1437d2..8149dd65 100644
--- a/backend/src/main/resources/application.yml
+++ b/backend/src/main/resources/application.yml
@@ -61,18 +61,13 @@ spring:
     drop-first: false
     default-schema: deploy-ease-platform
     contexts: default
-  redis:
-    host: 172.22.222.111
-    port: 6379
-    password: Qichen5210523...
-    database: 7
-    timeout: 6000ms
-    lettuce:
-      pool:
-        max-active: 8      # 连接池最大连接数
-        max-idle: 8        # 连接池最大空闲连接数
-        min-idle: 0        # 连接池最小空闲连接数
-        max-wait: -1ms     # 连接池最大阻塞等待时间
+  data:
+    redis:
+      host: 172.22.222.111
+      password: Qichen5210523...
+      port: 6379
+      database: 7
+      timeout: 6000ms
 flowable:
   database-schema-update: true
 #  id-generator: org.flowable.common.engine.impl.db.DbIdGenerator