diff --git a/scheduler/src/main/java/com/zfoo/scheduler/manager/SchedulerBus.java b/scheduler/src/main/java/com/zfoo/scheduler/manager/SchedulerBus.java
index 320c54f8..416c93e2 100644
--- a/scheduler/src/main/java/com/zfoo/scheduler/manager/SchedulerBus.java
+++ b/scheduler/src/main/java/com/zfoo/scheduler/manager/SchedulerBus.java
@@ -13,7 +13,6 @@
 
 package com.zfoo.scheduler.manager;
 
-import com.zfoo.protocol.collection.CollectionUtils;
 import com.zfoo.scheduler.SchedulerContext;
 import com.zfoo.scheduler.model.vo.SchedulerDefinition;
 import com.zfoo.scheduler.timeWheelUtils.Timer;
@@ -22,8 +21,6 @@ import com.zfoo.scheduler.util.TimeUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.List;
-import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
@@ -98,22 +95,6 @@ public abstract class SchedulerBus {
         }, delay, unit);
     }
 
-    /**
-     * cron表达式执行的任务
-     */
-    public static void scheduleCron(Runnable runnable, String cron) {
-        if (SchedulerContext.isStop()) {
-            return;
-        }
-
-        SchedulerDefinition scheduler = SchedulerDefinition.valueOf(cron, runnable);
-        var timerTask = new TimerTask(scheduler.getTriggerTimestamp(), () -> {
-            scheduler.getScheduler().invoke();
-            refreshTask(scheduler);
-        });
-        timer.addTask(timerTask);
-    }
-
     public static void refreshTask(SchedulerDefinition schedulerDefinition) {
         var timestamp = TimeUtils.currentTimeMillis();
         var nextTriggerTimestamp = TimeUtils.getNextTimestampByCronExpression(schedulerDefinition.getCronExpression(), timestamp);
diff --git a/util/src/main/java/com/zfoo/util/security/IdUtils.java b/util/src/main/java/com/zfoo/util/security/IdUtils.java
index 4e81c899..d5898348 100644
--- a/util/src/main/java/com/zfoo/util/security/IdUtils.java
+++ b/util/src/main/java/com/zfoo/util/security/IdUtils.java
@@ -25,7 +25,7 @@ public abstract class IdUtils {
     private static final AtomicInteger ATOMIC_INTEGER = new AtomicInteger(0);
 
     /**
-     * 本地int的id，如果达到最大值则重新从最小值重新计算
+     * 获取本地int的唯一id，如果达到最大值则重新从最小值重新计算，线程安全
      */
     public static int getLocalIntId() {
         return ATOMIC_INTEGER.incrementAndGet();