diff --git a/netty/service/src/main/java/cn/bunny/service/netty/demo3/ByteBufSlice.java b/netty/service/src/main/java/cn/bunny/service/netty/demo3/ByteBufSlice.java
new file mode 100644
index 0000000..9212bc9
--- /dev/null
+++ b/netty/service/src/main/java/cn/bunny/service/netty/demo3/ByteBufSlice.java
@@ -0,0 +1,35 @@
+package cn.bunny.service.netty.demo3;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufAllocator;
+
+import static cn.bunny.service.NettyLogUtil.log;
+
+public class ByteBufSlice {
+    public static void main(String[] args) {
+        ByteBuf buf = ByteBufAllocator.DEFAULT.buffer(10);
+        //          +-------------------------------------------------+
+        //          |  0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f |
+        // +--------+-------------------------------------------------+----------------+
+        // |00000000| 61 62 63 64 65 66 67 68 69 6a 6b 6c             |abcdefghijkl    |
+        // +--------+-------------------------------------------------+----------------+
+        buf.writeBytes(new byte[]{'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l'});
+        log(buf);
+
+        //          +-------------------------------------------------+
+        //          |  0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f |
+        // +--------+-------------------------------------------------+----------------+
+        // |00000000| 61 62 63 64 65                                  |abcde           |
+        // +--------+-------------------------------------------------+----------------+
+        ByteBuf buf1 = buf.slice(0, 5);
+        log(buf1);
+
+        //          +-------------------------------------------------+
+        //          |  0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f |
+        // +--------+-------------------------------------------------+----------------+
+        // |00000000| 66 67 68 69 6a                                  |fghij           |
+        // +--------+-------------------------------------------------+----------------+
+        ByteBuf buf2 = buf.slice(5, 5);
+        log(buf2);
+    }
+}