diff --git a/storage/keydb/storage.go b/storage/keydb/storage.go
index d5fddd0..b7b51fd 100644
--- a/storage/keydb/storage.go
+++ b/storage/keydb/storage.go
@@ -126,19 +126,19 @@ func (s *store) delPeer(ctx context.Context, infoHashKey, peerID string) error {
 }
 
 func (s *store) PutSeeder(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
-	return s.addPeer(ctx, r.InfoHashKey(ih.RawString(), true, peer.Addr().Is6()), r.PackPeer(peer))
+	return s.addPeer(ctx, r.InfoHashKey(ih.RawString(), true, peer.Addr().Is6(), ""), r.PackPeer(peer))
 }
 
 func (s *store) DeleteSeeder(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
-	return s.delPeer(ctx, r.InfoHashKey(ih.RawString(), true, peer.Addr().Is6()), r.PackPeer(peer))
+	return s.delPeer(ctx, r.InfoHashKey(ih.RawString(), true, peer.Addr().Is6(), ""), r.PackPeer(peer))
 }
 
 func (s *store) PutLeecher(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
-	return s.addPeer(ctx, r.InfoHashKey(ih.RawString(), false, peer.Addr().Is6()), r.PackPeer(peer))
+	return s.addPeer(ctx, r.InfoHashKey(ih.RawString(), false, peer.Addr().Is6(), ""), r.PackPeer(peer))
 }
 
 func (s *store) DeleteLeecher(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
-	return s.delPeer(ctx, r.InfoHashKey(ih.RawString(), false, peer.Addr().Is6()), r.PackPeer(peer))
+	return s.delPeer(ctx, r.InfoHashKey(ih.RawString(), false, peer.Addr().Is6(), ""), r.PackPeer(peer))
 }
 
 func (s *store) GraduateLeecher(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) (err error) {
@@ -147,8 +147,8 @@ func (s *store) GraduateLeecher(ctx context.Context, ih bittorrent.InfoHash, pee
 		Object("peer", peer).
 		Msg("graduate leecher")
 	infoHash, peerID := ih.RawString(), r.PackPeer(peer)
-	ihSeederKey := r.InfoHashKey(infoHash, true, peer.Addr().Is6())
-	ihLeecherKey := r.InfoHashKey(infoHash, false, peer.Addr().Is6())
+	ihSeederKey := r.InfoHashKey(infoHash, true, peer.Addr().Is6(), "")
+	ihLeecherKey := r.InfoHashKey(infoHash, false, peer.Addr().Is6(), "")
 	var moved bool
 	if moved, err = s.SMove(ctx, ihLeecherKey, ihSeederKey, peerID).Result(); err == nil {
 		if !moved {
diff --git a/storage/mdb/storage.go b/storage/mdb/storage.go
index ee57362..2cb3bed 100644
--- a/storage/mdb/storage.go
+++ b/storage/mdb/storage.go
@@ -30,10 +30,6 @@ func init() {
 type builder struct{}
 
 func (b builder) NewDataStorage(icfg conf.MapConfig) (storage.DataStorage, error) {
-	return b.NewPeerStorage(icfg)
-}
-
-func (builder) NewPeerStorage(icfg conf.MapConfig) (storage.PeerStorage, error) {
 	var cfg config
 	if err := icfg.Unmarshal(&cfg); err != nil {
 		return nil, err
@@ -41,6 +37,10 @@ func (builder) NewPeerStorage(icfg conf.MapConfig) (storage.PeerStorage, error)
 	return newStorage(cfg)
 }
 
+func (builder) NewPeerStorage(_ conf.MapConfig) (storage.PeerStorage, error) {
+	panic("lmdb peer storage not implemented")
+}
+
 type config struct {
 	Path        string
 	Mode        uint32
@@ -120,9 +120,10 @@ func newStorage(cfg config) (*mdb, error) {
 			return
 		}
 		if len(cfg.PeersDBName) > 0 {
-			peersDB, err = txn.CreateDBI(cfg.PeersDBName)
+			peersDB, err = txn.OpenDBI(cfg.PeersDBName, lmdb.Create|lmdb.DupSort|lmdb.DupFixed)
+
 		} else {
-			peersDB, err = txn.OpenRoot(0)
+			peersDB, err = txn.OpenRoot(lmdb.DupSort | lmdb.DupFixed)
 		}
 		return
 	}); err != nil {
@@ -155,14 +156,31 @@ func composeKey(ctx, key string) []byte {
 	return res
 }
 
-func (m *mdb) Put(ctx context.Context, storeCtx string, values ...storage.Entry) error {
-	//TODO implement me
-	panic("implement me")
+func (m *mdb) Put(_ context.Context, storeCtx string, values ...storage.Entry) (err error) {
+	if len(values) > 0 {
+		err = m.Update(func(txn *lmdb.Txn) (err error) {
+			for _, kv := range values {
+				if err = txn.Put(m.dataDB, composeKey(storeCtx, kv.Key), kv.Value, 0); err != nil {
+					break
+				}
+			}
+			return
+		})
+	}
+	return
 }
 
-func (m *mdb) Contains(ctx context.Context, storeCtx string, key string) (bool, error) {
-	//TODO implement me
-	panic("implement me")
+func (m *mdb) Contains(_ context.Context, storeCtx string, key string) (contains bool, err error) {
+	err = m.View(func(txn *lmdb.Txn) (err error) {
+		_, err = txn.Get(m.dataDB, composeKey(storeCtx, key))
+		return
+	})
+	if err == nil {
+		contains = true
+	} else if lmdb.IsNotFound(err) {
+		err = nil
+	}
+	return
 }
 
 func ignoreNotFound(data []byte, err error) ([]byte, error) {
@@ -173,54 +191,63 @@ func ignoreNotFound(data []byte, err error) ([]byte, error) {
 }
 
 func (m *mdb) Load(_ context.Context, storeCtx string, key string) (v []byte, err error) {
-	err = m.Env.View(func(txn *lmdb.Txn) (err error) {
+	err = m.View(func(txn *lmdb.Txn) (err error) {
 		v, err = ignoreNotFound(txn.Get(m.dataDB, composeKey(storeCtx, key)))
 		return
 	})
 	return
 }
 
-func (m *mdb) Delete(ctx context.Context, storeCtx string, keys ...string) error {
+func (m *mdb) Delete(_ context.Context, storeCtx string, keys ...string) (err error) {
+	if len(keys) > 0 {
+		err = m.Update(func(txn *lmdb.Txn) (err error) {
+			for _, k := range keys {
+				if err = txn.Del(m.dataDB, composeKey(storeCtx, k), nil); err != nil {
+					break
+				}
+			}
+			return
+		})
+	}
+	return
+}
+
+func (m *mdb) PutSeeder(_ context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
 	//TODO implement me
 	panic("implement me")
 }
 
-func (m *mdb) PutSeeder(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
+func (m *mdb) DeleteSeeder(_ context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
 	//TODO implement me
 	panic("implement me")
 }
 
-func (m *mdb) DeleteSeeder(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
+func (m *mdb) PutLeecher(_ context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
 	//TODO implement me
 	panic("implement me")
 }
 
-func (m *mdb) PutLeecher(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
+func (m *mdb) DeleteLeecher(_ context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
 	//TODO implement me
 	panic("implement me")
 }
 
-func (m *mdb) DeleteLeecher(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
+func (m *mdb) GraduateLeecher(_ context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
 	//TODO implement me
 	panic("implement me")
 }
 
-func (m *mdb) GraduateLeecher(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
+func (m *mdb) AnnouncePeers(_ context.Context, ih bittorrent.InfoHash, forSeeder bool, numWant int, v6 bool) (peers []bittorrent.Peer, err error) {
 	//TODO implement me
 	panic("implement me")
 }
 
-func (m *mdb) AnnouncePeers(ctx context.Context, ih bittorrent.InfoHash, forSeeder bool, numWant int, v6 bool) (peers []bittorrent.Peer, err error) {
+func (m *mdb) ScrapeSwarm(_ context.Context, ih bittorrent.InfoHash) (leechers uint32, seeders uint32, snatched uint32, err error) {
 	//TODO implement me
 	panic("implement me")
 }
 
-func (m *mdb) ScrapeSwarm(ctx context.Context, ih bittorrent.InfoHash) (leechers uint32, seeders uint32, snatched uint32, err error) {
-	//TODO implement me
-	panic("implement me")
-}
-
-func (m *mdb) Ping(ctx context.Context) error {
+func (m *mdb) Ping(_ context.Context) error {
 	//TODO implement me
 	panic("implement me")
 }
diff --git a/storage/redis/storage.go b/storage/redis/storage.go
index 27e7b71..c6a6518 100644
--- a/storage/redis/storage.go
+++ b/storage/redis/storage.go
@@ -343,7 +343,7 @@ func NoResultErr(err error) error {
 }
 
 // InfoHashKey generates redis key for provided hash and flags
-func InfoHashKey(infoHash string, seeder, v6 bool) (infoHashKey string) {
+func InfoHashKey(infoHash string, seeder, v6 bool, suffix string) (infoHashKey string) {
 	var bm int
 	if seeder {
 		bm = 0b01
@@ -361,7 +361,7 @@ func InfoHashKey(infoHash string, seeder, v6 bool) (infoHashKey string) {
 	case 0b00:
 		infoHashKey = IH4LeecherKey
 	}
-	infoHashKey += infoHash
+	infoHashKey += infoHash + suffix
 	return
 }
 
@@ -411,19 +411,19 @@ func PackPeer(p bittorrent.Peer) string {
 }
 
 func (ps *store) PutSeeder(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
-	return ps.putPeer(ctx, InfoHashKey(ih.RawString(), true, peer.Addr().Is6()), CountSeederKey, PackPeer(peer))
+	return ps.putPeer(ctx, InfoHashKey(ih.RawString(), true, peer.Addr().Is6(), ""), CountSeederKey, PackPeer(peer))
 }
 
 func (ps *store) DeleteSeeder(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
-	return ps.delPeer(ctx, InfoHashKey(ih.RawString(), true, peer.Addr().Is6()), CountSeederKey, PackPeer(peer))
+	return ps.delPeer(ctx, InfoHashKey(ih.RawString(), true, peer.Addr().Is6(), ""), CountSeederKey, PackPeer(peer))
 }
 
 func (ps *store) PutLeecher(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
-	return ps.putPeer(ctx, InfoHashKey(ih.RawString(), false, peer.Addr().Is6()), CountLeecherKey, PackPeer(peer))
+	return ps.putPeer(ctx, InfoHashKey(ih.RawString(), false, peer.Addr().Is6(), ""), CountLeecherKey, PackPeer(peer))
 }
 
 func (ps *store) DeleteLeecher(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
-	return ps.delPeer(ctx, InfoHashKey(ih.RawString(), false, peer.Addr().Is6()), CountLeecherKey, PackPeer(peer))
+	return ps.delPeer(ctx, InfoHashKey(ih.RawString(), false, peer.Addr().Is6(), ""), CountLeecherKey, PackPeer(peer))
 }
 
 func (ps *store) GraduateLeecher(ctx context.Context, ih bittorrent.InfoHash, peer bittorrent.Peer) error {
@@ -433,7 +433,7 @@ func (ps *store) GraduateLeecher(ctx context.Context, ih bittorrent.InfoHash, pe
 		Msg("graduate leecher")
 
 	infoHash, peerID, isV6 := ih.RawString(), PackPeer(peer), peer.Addr().Is6()
-	ihSeederKey, ihLeecherKey := InfoHashKey(infoHash, true, isV6), InfoHashKey(infoHash, false, isV6)
+	ihSeederKey, ihLeecherKey := InfoHashKey(infoHash, true, isV6, ""), InfoHashKey(infoHash, false, isV6, "")
 
 	return ps.tx(ctx, func(tx redis.Pipeliner) error {
 		deleted, err := tx.HDel(ctx, ihLeecherKey, peerID).Uint64()
@@ -516,10 +516,10 @@ func (ps *Connection) GetPeers(ctx context.Context, ih bittorrent.InfoHash, forS
 	infoHashKeys := make([]string, 1, 2)
 
 	if forSeeder {
-		infoHashKeys[0] = InfoHashKey(infoHash, false, isV6)
+		infoHashKeys[0] = InfoHashKey(infoHash, false, isV6, "")
 	} else {
-		infoHashKeys[0] = InfoHashKey(infoHash, true, isV6)
-		infoHashKeys = append(infoHashKeys, InfoHashKey(infoHash, false, isV6))
+		infoHashKeys[0] = InfoHashKey(infoHash, true, isV6, "")
+		infoHashKeys = append(infoHashKeys, InfoHashKey(infoHash, false, isV6, ""))
 	}
 
 	for _, infoHashKey := range infoHashKeys {
@@ -564,19 +564,19 @@ func (ps *Connection) ScrapeIH(ctx context.Context, ih bittorrent.InfoHash, coun
 	infoHash := ih.RawString()
 	var lc4, lc6, sc4, sc6, dc int64
 
-	lc4, err = countFn(ctx, InfoHashKey(infoHash, false, false)).Result()
+	lc4, err = countFn(ctx, InfoHashKey(infoHash, false, false, "")).Result()
 	if err = NoResultErr(err); err != nil {
 		return
 	}
-	lc6, err = countFn(ctx, InfoHashKey(infoHash, false, true)).Result()
+	lc6, err = countFn(ctx, InfoHashKey(infoHash, false, true, "")).Result()
 	if err = NoResultErr(err); err != nil {
 		return
 	}
-	sc4, err = countFn(ctx, InfoHashKey(infoHash, true, false)).Result()
+	sc4, err = countFn(ctx, InfoHashKey(infoHash, true, false, "")).Result()
 	if err = NoResultErr(err); err != nil {
 		return
 	}
-	sc6, err = countFn(ctx, InfoHashKey(infoHash, true, true)).Result()
+	sc6, err = countFn(ctx, InfoHashKey(infoHash, true, true, "")).Result()
 	if err = NoResultErr(err); err != nil {
 		return
 	}