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Change-Id: Iba4d232d8408195c5af01d2f1686d171e3d5eeac
diff --git a/src/main/java/com/example/g8backend/mapper/PeerMapper.java b/src/main/java/com/example/g8backend/mapper/PeerMapper.java
index f0b9b85..bd96863 100644
--- a/src/main/java/com/example/g8backend/mapper/PeerMapper.java
+++ b/src/main/java/com/example/g8backend/mapper/PeerMapper.java
@@ -8,8 +8,10 @@
 
 @Mapper
 public interface PeerMapper extends BaseMapper<Peer> {
-    // get peer by primary key(peerId, infoHash, passkey)
+    List<String> selectAllInfoHashesWithPeers();
+    Long countRecentActivity(String infoHash);
     Peer getPeerByPK(String peerId, String infoHash, String passkey);
     List<Peer> getPeerByInfoHashAndPeerId(String infoHash, String peerId);
-    void updatePeer(String passkey, String peerId, String info_hash, double uploaded, double downloaded);
+    void updatePeer(String passkey, String peerId, String infoHash, double uploaded, double downloaded);
 }
+