diff --git a/frontend/src/i18n/en/es.ts b/frontend/src/i18n/en/es.ts
index e171e2fa..da3cfa6d 100644
--- a/frontend/src/i18n/en/es.ts
+++ b/frontend/src/i18n/en/es.ts
@@ -59,7 +59,6 @@ export default {
         docJsonError: 'Document JSON Format Error',
         sortParams: 'Sort',
         otherParams: 'Other',
-        previewParams: 'Preview',
         closeIndexConfirm: 'This operation will close index [{name}]. Do you want to continue?',
         openIndexConfirm: 'This operation will open index [{name}]. Do you want to continue?',
         clearCacheConfirm: 'This operation will clear index [{name}] cache. Do you want to continue?',
diff --git a/frontend/src/i18n/zh-cn/es.ts b/frontend/src/i18n/zh-cn/es.ts
index b0ff288e..5d48b51e 100644
--- a/frontend/src/i18n/zh-cn/es.ts
+++ b/frontend/src/i18n/zh-cn/es.ts
@@ -58,7 +58,6 @@ export default {
         docJsonError: '文档JSON格式错误',
         sortParams: '排序',
         otherParams: '其他',
-        previewParams: '预览',
         closeIndexConfirm: '将会关闭索引：[{name}]。 确认继续吗？',
         openIndexConfirm: '将会打开索引：[{name}]。 确认继续吗？',
         clearCacheConfirm: '将会清除索引：[{name}]缓存。 确认继续吗？',
diff --git a/frontend/src/views/ops/es/component/EsSearch.vue b/frontend/src/views/ops/es/component/EsSearch.vue
index fbeb19b6..d7c34d2f 100644
--- a/frontend/src/views/ops/es/component/EsSearch.vue
+++ b/frontend/src/views/ops/es/component/EsSearch.vue
@@ -116,7 +116,6 @@
 
         <template #footer>
             <div>
-                <el-button size="small" @click="onPreviewParam" icon="view">{{ t('es.previewParams') }}</el-button>
                 <el-button size="small" @click="onClearParam" icon="refresh">{{ t('common.reset') }}</el-button>
                 <!-- <el-button size="small" @click="onSaveParam" type="primary" icon="check">{{ t('common.save') }}</el-button>-->
 
@@ -472,7 +471,7 @@ const onSaveParam = () => {
     // 保存查询条件
 };
 
-const onPreviewParam = () => {
+const onSearch = () => {
     parseParams();
     MonacoEditorBox({
         content: JSON.stringify(state.search, null, 2),
@@ -480,7 +479,10 @@ const onPreviewParam = () => {
         language: 'json',
         width: state.searchBoxWidth,
         canChangeLang: false,
-        options: { wordWrap: 'on', tabSize: 2, readOnly: true }, // 自动换行
+        options: { wordWrap: 'on', tabSize: 2, readOnly: false }, // 自动换行
+        confirmFn: (val: string) => {
+            emit('search', JSON.parse(val));
+        },
     });
 };
 
@@ -572,11 +574,6 @@ const parseParams = () => {
         delete state.search['minimum_should_match'];
     }
 };
-
-const onSearch = () => {
-    parseParams();
-    emit('search', state.search);
-};
 </script>
 
 <style lang="scss" scoped>
diff --git a/server/internal/es/application/es_instance.go b/server/internal/es/application/es_instance.go
index 7998c990..685a5c71 100644
--- a/server/internal/es/application/es_instance.go
+++ b/server/internal/es/application/es_instance.go
@@ -73,7 +73,7 @@ func (app *instanceAppImpl) GetPageList(condition *entity.InstanceQuery, orderBy
 }
 
 func (app *instanceAppImpl) DoConn(ctx context.Context, instanceId uint64, fn func(*esi.EsConn) error) error {
-	p, err := poolGroup.GetChanPool(fmt.Sprintf("es-%d", instanceId), func() (*esi.EsConn, error) {
+	p, err := poolGroup.GetCachePool(fmt.Sprintf("es-%d", instanceId), func() (*esi.EsConn, error) {
 		return app.createConn(context.Background(), instanceId)
 	})
 
diff --git a/server/pkg/pool/group.go b/server/pkg/pool/group.go
index 1f8119ed..3d4911c6 100644
--- a/server/pkg/pool/group.go
+++ b/server/pkg/pool/group.go
@@ -1,8 +1,11 @@
 package pool
 
 import (
+	"fmt"
 	"mayfly-go/pkg/logx"
+	"runtime"
 	"sync"
+	"time"
 
 	"golang.org/x/sync/singleflight"
 )
@@ -11,12 +14,16 @@ type PoolGroup[T Conn] struct {
 	mu          sync.RWMutex
 	poolGroup   map[string]Pool[T]
 	createGroup singleflight.Group
+	closingWg   sync.WaitGroup
+	closingMu   sync.Mutex
+	closingCh   chan struct{} // 添加关闭通道
 }
 
 func NewPoolGroup[T Conn]() *PoolGroup[T] {
 	return &PoolGroup[T]{
 		poolGroup:   make(map[string]Pool[T]),
 		createGroup: singleflight.Group{},
+		closingCh:   make(chan struct{}),
 	}
 }
 
@@ -86,28 +93,92 @@ func (pg *PoolGroup[T]) Get(key string) (Pool[T], bool) {
 	return nil, false
 }
 
+// 添加一个异步关闭的辅助函数
+func (pg *PoolGroup[T]) asyncClose(pool Pool[T], key string) {
+	pg.closingMu.Lock()
+	pg.closingWg.Add(1)
+	pg.closingMu.Unlock()
+
+	go func() {
+		defer func() {
+			pg.closingMu.Lock()
+			pg.closingWg.Done()
+			pg.closingMu.Unlock()
+		}()
+
+		// 设置超时检测
+		done := make(chan struct{})
+		go func() {
+			pool.Close()
+			close(done)
+		}()
+
+		// 等待关闭完成或超时
+		select {
+		case <-done:
+			logx.Infof("pool group - pool closed successfully, key: %s", key)
+		case <-time.After(5 * time.Second):
+			logx.Errorf("pool group - pool close timeout, possible deadlock detected, key: %s", key)
+			// 打印当前 goroutine 的堆栈信息
+			buf := make([]byte, 1<<16)
+			runtime.Stack(buf, true)
+			logx.Errorf("pool group - goroutine stack trace:\n%s", buf)
+		}
+	}()
+}
+
 func (pg *PoolGroup[T]) Close(key string) error {
 	pg.mu.Lock()
-	defer pg.mu.Unlock()
-
 	if p, ok := pg.poolGroup[key]; ok {
-		logx.Infof("pool group - close pool, key: %s", key)
-		p.Close()
+		logx.Infof("pool group - closing pool, key: %s", key)
 		pg.createGroup.Forget(key)
 		delete(pg.poolGroup, key)
+		pg.mu.Unlock()
+		pg.asyncClose(p, key)
+		return nil
 	}
+	pg.mu.Unlock()
 	return nil
 }
 
 func (pg *PoolGroup[T]) CloseAll() {
 	pg.mu.Lock()
-	defer pg.mu.Unlock()
-
-	for key := range pg.poolGroup {
-		pg.poolGroup[key].Close()
-		pg.createGroup.Forget(key)
+	pools := make(map[string]Pool[T], len(pg.poolGroup))
+	for k, v := range pg.poolGroup {
+		pools[k] = v
 	}
 	pg.poolGroup = make(map[string]Pool[T])
+	pg.mu.Unlock()
+
+	// 异步关闭所有池
+	for key, pool := range pools {
+		pg.asyncClose(pool, key)
+	}
+}
+
+// 添加一个用于监控连接池关闭状态的方法
+func (pg *PoolGroup[T]) WaitForClose(timeout time.Duration) error {
+	// 创建一个新的通道用于通知等待完成
+	done := make(chan struct{})
+
+	// 启动一个 goroutine 来等待所有关闭操作完成
+	go func() {
+		pg.closingWg.Wait()
+		close(done)
+	}()
+
+	// 等待完成或超时
+	select {
+	case <-done:
+		return nil
+	case <-time.After(timeout):
+		// 在超时时打印当前状态
+		pg.mu.RLock()
+		remainingPools := len(pg.poolGroup)
+		pg.mu.RUnlock()
+		logx.Errorf("pool group - close timeout, remaining pools: %d", remainingPools)
+		return fmt.Errorf("wait for pool group close timeout after %v", timeout)
+	}
 }
 
 func (pg *PoolGroup[T]) AllPool() map[string]Pool[T] {
diff --git a/server/pkg/pool/pool_test.go b/server/pkg/pool/pool_test.go
index 9fee9382..fd5763fa 100644
--- a/server/pkg/pool/pool_test.go
+++ b/server/pkg/pool/pool_test.go
@@ -183,11 +183,11 @@ func TestCachePool_Basic(t *testing.T) {
 
 	ctx := context.Background()
 	conn1, _ := pool.Get(ctx)
+	_ = pool.Put(conn1)
 	conn2, _ := pool.Get(ctx)
 	if conn1 != conn2 {
 		t.Fatal("缓存池应复用同一连接")
 	}
-	_ = pool.Put(conn1)
 	_ = pool.Put(conn2)
 	pool.Close()
 }
@@ -564,6 +564,12 @@ func TestPoolGroup_ConcurrentAccess(t *testing.T) {
 	}
 	wg.Wait()
 
+	// 等待所有池关闭完成
+	err := group.WaitForClose(10 * time.Second)
+	if err != nil {
+		t.Errorf("等待池关闭超时: %v", err)
+	}
+
 	// 验证所有池都已关闭
 	pools = group.AllPool()
 	if len(pools) != 0 {
@@ -597,6 +603,12 @@ func TestPoolGroup_ConcurrentClose(t *testing.T) {
 	}
 	wg.Wait()
 
+	// 等待所有池关闭完成
+	err := group.WaitForClose(10 * time.Second)
+	if err != nil {
+		t.Errorf("等待池关闭超时: %v", err)
+	}
+
 	// 验证所有池都已关闭
 	pools := group.AllPool()
 	if len(pools) != 0 {