diff --git a/service-ai/service-ai-core/src/main/java/com/lanyuanxiaoyao/service/ai/core/configuration/SnowflakeId.java b/service-ai/service-ai-core/src/main/java/com/lanyuanxiaoyao/service/ai/core/configuration/SnowflakeId.java
new file mode 100644
index 0000000..59da9ee
--- /dev/null
+++ b/service-ai/service-ai-core/src/main/java/com/lanyuanxiaoyao/service/ai/core/configuration/SnowflakeId.java
@@ -0,0 +1,74 @@
+package com.lanyuanxiaoyao.service.ai.core.configuration;
+
+import java.time.Instant;
+
+/**
+ * 使用雪花算法作为ID生成器
+ *
+ * @author lanyuanxiaoyao
+ * @date 2024-11-14
+ */
+public class SnowflakeId {
+  /**
+   * 起始的时间戳
+   */
+  private final static long START_TIMESTAMP = 1;
+
+  /**
+   * 序列号占用的位数
+   */
+  private final static long SEQUENCE_BIT = 11;
+
+  /**
+   * 序列号最大值
+   */
+  private final static long MAX_SEQUENCE_BIT = ~(-1 << SEQUENCE_BIT);
+
+  /**
+   * 时间戳值向左位移
+   */
+  private final static long TIMESTAMP_OFFSET = SEQUENCE_BIT;
+
+  /**
+   * 序列号
+   */
+  private static long sequence = 0;
+  /**
+   * 上一次时间戳
+   */
+  private static long lastTimestamp = -1;
+
+  public static synchronized long next() {
+    long currentTimestamp = nowTimestamp();
+    if (currentTimestamp < lastTimestamp) {
+      throw new RuntimeException("Clock have moved backwards.");
+    }
+
+    if (currentTimestamp == lastTimestamp) {
+      // 相同毫秒内, 序列号自增
+      sequence = (sequence + 1) & MAX_SEQUENCE_BIT;
+      // 同一毫秒的序列数已经达到最大
+      if (sequence == 0) {
+        currentTimestamp = nextTimestamp();
+      }
+    } else {
+      // 不同毫秒内, 序列号置为0
+      sequence = 0;
+    }
+
+    lastTimestamp = currentTimestamp;
+    return (currentTimestamp - START_TIMESTAMP) << TIMESTAMP_OFFSET | sequence;
+  }
+
+  private static long nextTimestamp() {
+    long milli = nowTimestamp();
+    while (milli <= lastTimestamp) {
+      milli = nowTimestamp();
+    }
+    return milli;
+  }
+
+  private static long nowTimestamp() {
+    return Instant.now().toEpochMilli();
+  }
+}
diff --git a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/Group.java b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/Group.java
index 9540aeb..3d41dd4 100644
--- a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/Group.java
+++ b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/Group.java
@@ -8,7 +8,7 @@ import lombok.Data;
  */
 @Data
 public class Group {
-  private String id;
+  private Long id;
   private String name;
   private String status;
   private Long createdTime;
diff --git a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/EmbeddingContext.java b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/context/EmbeddingContext.java
similarity index 93%
rename from service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/EmbeddingContext.java
rename to service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/context/EmbeddingContext.java
index b85f588..f8d0d5e 100644
--- a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/EmbeddingContext.java
+++ b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/context/EmbeddingContext.java
@@ -1,4 +1,4 @@
-package com.lanyuanxiaoyao.service.ai.web.entity;
+package com.lanyuanxiaoyao.service.ai.web.entity.context;
 
 import java.util.List;
 import java.util.Map;
diff --git a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/vo/KnowledgeVO.java b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/vo/KnowledgeVO.java
index 699b0c0..a7d4bb2 100644
--- a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/vo/KnowledgeVO.java
+++ b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/vo/KnowledgeVO.java
@@ -8,8 +8,8 @@ import lombok.Data;
  */
 @Data
 public class KnowledgeVO {
-  private String id;
-  private String vectorSourceId;
+  private Long id;
+  private Long vectorSourceId;
   private String name;
   private String strategy;
   private Long size;
diff --git a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/DataFileService.java b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/DataFileService.java
index 8856a2b..d19b88b 100644
--- a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/DataFileService.java
+++ b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/DataFileService.java
@@ -1,7 +1,7 @@
 package com.lanyuanxiaoyao.service.ai.web.service;
 
 import club.kingon.sql.builder.SqlBuilder;
-import cn.hutool.core.util.IdUtil;
+import com.lanyuanxiaoyao.service.ai.core.configuration.SnowflakeId;
 import com.lanyuanxiaoyao.service.ai.web.entity.vo.DataFileVO;
 import com.lanyuanxiaoyao.service.common.Constants;
 import org.springframework.jdbc.core.JdbcTemplate;
@@ -44,7 +44,7 @@ public class DataFileService {
 
   @Transactional(rollbackFor = Exception.class)
   public Long initialDataFile(String filename) {
-    long id = IdUtil.getSnowflakeNextId();
+    long id = SnowflakeId.next();
     template.update(
         SqlBuilder.insertInto(DATA_FILE_TABLE_NAME, "id", "filename")
             .values()
diff --git a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/EmbeddingService.java b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/EmbeddingService.java
index 6cdd3fa..49588ff 100644
--- a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/EmbeddingService.java
+++ b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/EmbeddingService.java
@@ -4,8 +4,8 @@ import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.lang.Pair;
 import cn.hutool.core.util.IdUtil;
 import cn.hutool.core.util.StrUtil;
-import com.lanyuanxiaoyao.service.ai.web.entity.EmbeddingContext;
 import com.lanyuanxiaoyao.service.ai.web.entity.Knowledge;
+import com.lanyuanxiaoyao.service.ai.web.entity.context.EmbeddingContext;
 import com.lanyuanxiaoyao.service.ai.web.entity.vo.DataFileVO;
 import com.lanyuanxiaoyao.service.ai.web.service.knowledge.GroupService;
 import com.lanyuanxiaoyao.service.ai.web.service.knowledge.KnowledgeBaseService;
diff --git a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/knowledge/GroupService.java b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/knowledge/GroupService.java
index 444bd86..1c1c9cf 100644
--- a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/knowledge/GroupService.java
+++ b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/knowledge/GroupService.java
@@ -3,7 +3,7 @@ package com.lanyuanxiaoyao.service.ai.web.service.knowledge;
 import club.kingon.sql.builder.SqlBuilder;
 import club.kingon.sql.builder.entry.Alias;
 import club.kingon.sql.builder.entry.Column;
-import cn.hutool.core.util.IdUtil;
+import com.lanyuanxiaoyao.service.ai.core.configuration.SnowflakeId;
 import com.lanyuanxiaoyao.service.ai.web.entity.Group;
 import com.lanyuanxiaoyao.service.common.Constants;
 import io.qdrant.client.ConditionFactory;
@@ -28,7 +28,7 @@ public class GroupService {
   public static final String GROUP_TABLE_NAME = Constants.DATABASE_NAME + ".service_ai_group";
   private static final RowMapper<Group> groupMapper = (rs, row) -> {
     Group vo = new Group();
-    vo.setId(String.valueOf(rs.getLong(1)));
+    vo.setId(rs.getLong(1));
     vo.setName(rs.getString(2));
     vo.setStatus(rs.getString(3));
     vo.setCreatedTime(rs.getTimestamp(4).getTime());
@@ -57,7 +57,7 @@ public class GroupService {
 
   @Transactional(rollbackFor = Exception.class)
   public Long add(Long knowledgeId, String name) {
-    long id = IdUtil.getSnowflakeNextId();
+    long id = SnowflakeId.next();
     template.update(
         SqlBuilder.insertInto(GROUP_TABLE_NAME, "id", "knowledge_id", "name", "status")
             .values()
diff --git a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/knowledge/KnowledgeBaseService.java b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/knowledge/KnowledgeBaseService.java
index 7a4f5be..30667bf 100644
--- a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/knowledge/KnowledgeBaseService.java
+++ b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/knowledge/KnowledgeBaseService.java
@@ -1,9 +1,9 @@
 package com.lanyuanxiaoyao.service.ai.web.service.knowledge;
 
 import club.kingon.sql.builder.SqlBuilder;
-import cn.hutool.core.util.IdUtil;
 import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.core.util.StrUtil;
+import com.lanyuanxiaoyao.service.ai.core.configuration.SnowflakeId;
 import com.lanyuanxiaoyao.service.ai.web.entity.Knowledge;
 import com.lanyuanxiaoyao.service.ai.web.entity.vo.KnowledgeVO;
 import com.lanyuanxiaoyao.service.common.Constants;
@@ -79,8 +79,8 @@ public class KnowledgeBaseService {
       throw new RuntimeException("名称已存在");
     }
 
-    long id = IdUtil.getSnowflakeNextId();
-    long vectorSourceId = IdUtil.getSnowflakeNextId();
+    long id = SnowflakeId.next();
+    long vectorSourceId = SnowflakeId.next();
     template.update(
         SqlBuilder.insertInto(KNOWLEDGE_TABLE_NAME, "id", "vector_source_id", "name", "strategy")
             .values()
@@ -124,8 +124,8 @@ public class KnowledgeBaseService {
           try {
             Collections.CollectionInfo info = client.getCollectionInfoAsync(String.valueOf(knowledge.getVectorSourceId())).get();
             KnowledgeVO vo = new KnowledgeVO();
-            vo.setId(String.valueOf(knowledge.getId()));
-            vo.setVectorSourceId(String.valueOf(knowledge.getVectorSourceId()));
+            vo.setId(knowledge.getId());
+            vo.setVectorSourceId(knowledge.getVectorSourceId());
             vo.setName(knowledge.getName());
             vo.setPoints(info.getPointsCount());
             vo.setSegments(info.getSegmentsCount());
diff --git a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/node/EmbeddingNodes.java b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/node/EmbeddingNodes.java
index 8c02fd0..9842180 100644
--- a/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/node/EmbeddingNodes.java
+++ b/service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/service/node/EmbeddingNodes.java
@@ -4,7 +4,7 @@ import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.lang.Assert;
 import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.core.util.StrUtil;
-import com.lanyuanxiaoyao.service.ai.web.entity.EmbeddingContext;
+import com.lanyuanxiaoyao.service.ai.web.entity.context.EmbeddingContext;
 import com.yomahub.liteflow.annotation.LiteflowComponent;
 import com.yomahub.liteflow.annotation.LiteflowMethod;
 import com.yomahub.liteflow.core.NodeComponent;