diff --git a/store/src/main/java/com/alibaba/otter/canal/store/memory/MemoryEventStoreWithBuffer.java b/store/src/main/java/com/alibaba/otter/canal/store/memory/MemoryEventStoreWithBuffer.java
index 6c6d08ff..5fdb0323 100644
--- a/store/src/main/java/com/alibaba/otter/canal/store/memory/MemoryEventStoreWithBuffer.java
+++ b/store/src/main/java/com/alibaba/otter/canal/store/memory/MemoryEventStoreWithBuffer.java
@@ -35,16 +35,16 @@ import com.alibaba.otter.canal.store.model.Events;
  */
 public class MemoryEventStoreWithBuffer extends AbstractCanalStoreScavenge implements CanalEventStore<Event>, CanalStoreScavenge {
 
-    private static final long INIT_SQEUENCE = -1;
+    private static final long INIT_SEQUENCE = -1;
     private int               bufferSize    = 16 * 1024;
     private int               bufferMemUnit = 1024;                         // memsize的单位，默认为1kb大小
     private int               indexMask;
     private Event[]           entries;
 
     // 记录下put/get/ack操作的三个下标
-    private AtomicLong        putSequence   = new AtomicLong(INIT_SQEUENCE); // 代表当前put操作最后一次写操作发生的位置
-    private AtomicLong        getSequence   = new AtomicLong(INIT_SQEUENCE); // 代表当前get操作读取的最后一条的位置
-    private AtomicLong        ackSequence   = new AtomicLong(INIT_SQEUENCE); // 代表当前ack操作的最后一条的位置
+    private AtomicLong        putSequence   = new AtomicLong(INIT_SEQUENCE); // 代表当前put操作最后一次写操作发生的位置
+    private AtomicLong        getSequence   = new AtomicLong(INIT_SEQUENCE); // 代表当前get操作读取的最后一条的位置
+    private AtomicLong        ackSequence   = new AtomicLong(INIT_SEQUENCE); // 代表当前ack操作的最后一条的位置
 
     // 记录下put/get/ack操作的三个memsize大小
     private AtomicLong        putMemSize    = new AtomicLong(0);
@@ -358,17 +358,17 @@ public class MemoryEventStoreWithBuffer extends AbstractCanalStoreScavenge imple
         lock.lock();
         try {
             long firstSeqeuence = ackSequence.get();
-            if (firstSeqeuence == INIT_SQEUENCE && firstSeqeuence < putSequence.get()) {
+            if (firstSeqeuence == INIT_SEQUENCE && firstSeqeuence < putSequence.get()) {
                 // 没有ack过数据
                 Event event = entries[getIndex(firstSeqeuence + 1)]; // 最后一次ack为-1，需要移动到下一条,included
                                                                      // = false
                 return CanalEventUtils.createPosition(event, false);
-            } else if (firstSeqeuence > INIT_SQEUENCE && firstSeqeuence < putSequence.get()) {
+            } else if (firstSeqeuence > INIT_SEQUENCE && firstSeqeuence < putSequence.get()) {
                 // ack未追上put操作
                 Event event = entries[getIndex(firstSeqeuence + 1)]; // 最后一次ack的位置数据
                                                                      // + 1
                 return CanalEventUtils.createPosition(event, true);
-            } else if (firstSeqeuence > INIT_SQEUENCE && firstSeqeuence == putSequence.get()) {
+            } else if (firstSeqeuence > INIT_SEQUENCE && firstSeqeuence == putSequence.get()) {
                 // 已经追上，store中没有数据
                 Event event = entries[getIndex(firstSeqeuence)]; // 最后一次ack的位置数据，和last为同一条，included
                                                                  // = false
@@ -387,10 +387,10 @@ public class MemoryEventStoreWithBuffer extends AbstractCanalStoreScavenge imple
         lock.lock();
         try {
             long latestSequence = putSequence.get();
-            if (latestSequence > INIT_SQEUENCE && latestSequence != ackSequence.get()) {
+            if (latestSequence > INIT_SEQUENCE && latestSequence != ackSequence.get()) {
                 Event event = entries[(int) putSequence.get() & indexMask]; // 最后一次写入的数据，最后一条未消费的数据
                 return CanalEventUtils.createPosition(event, true);
-            } else if (latestSequence > INIT_SQEUENCE && latestSequence == ackSequence.get()) {
+            } else if (latestSequence > INIT_SEQUENCE && latestSequence == ackSequence.get()) {
                 // ack已经追上了put操作
                 Event event = entries[(int) putSequence.get() & indexMask]; // 最后一次写入的数据，included
                                                                             // =
@@ -473,9 +473,9 @@ public class MemoryEventStoreWithBuffer extends AbstractCanalStoreScavenge imple
         final ReentrantLock lock = this.lock;
         lock.lock();
         try {
-            putSequence.set(INIT_SQEUENCE);
-            getSequence.set(INIT_SQEUENCE);
-            ackSequence.set(INIT_SQEUENCE);
+            putSequence.set(INIT_SEQUENCE);
+            getSequence.set(INIT_SEQUENCE);
+            ackSequence.set(INIT_SEQUENCE);
 
             putMemSize.set(0);
             getMemSize.set(0);