冷门种子推荐，冷门种子下载不计入下载量，冷门种子自动化判断
Change-Id: Iba4d232d8408195c5af01d2f1686d171e3d5eeac
diff --git a/src/main/java/com/example/g8backend/service/PeerService.java b/src/main/java/com/example/g8backend/service/PeerService.java
new file mode 100644
index 0000000..5ae8651
--- /dev/null
+++ b/src/main/java/com/example/g8backend/service/PeerService.java
@@ -0,0 +1,13 @@
+package com.example.g8backend.service;
+
+import com.example.g8backend.entity.Peer;
+
+import java.util.List;
+
+public interface PeerService {
+ Peer getPeerByPK(String peerId, String infoHash, String passkey);
+
+ List<Peer> getPeerByInfoHashAndPeerId(String infoHash, String peerId);
+
+ void updatePeer(String passkey, String peerId, String infoHash, double uploaded, double downloaded);
+}