diff --git a/internal/rpc/msg/server.go b/internal/rpc/msg/server.go
index 88be287fd..9b1965b00 100644
--- a/internal/rpc/msg/server.go
+++ b/internal/rpc/msg/server.go
@@ -16,6 +16,7 @@ package msg
 
 import (
 	"context"
+	"github.com/openimsdk/open-im-server/v3/pkg/rpccache"
 
 	"google.golang.org/grpc"
 
@@ -34,12 +35,13 @@ import (
 type (
 	MessageInterceptorChain []MessageInterceptorFunc
 	msgServer               struct {
-		RegisterCenter         discoveryregistry.SvcDiscoveryRegistry
-		MsgDatabase            controller.CommonMsgDatabase
-		Group                  *rpcclient.GroupRpcClient
-		User                   *rpcclient.UserRpcClient
-		Conversation           *rpcclient.ConversationRpcClient
-		friend                 *rpcclient.FriendRpcClient
+		RegisterCenter discoveryregistry.SvcDiscoveryRegistry
+		MsgDatabase    controller.CommonMsgDatabase
+		Group          *rpcclient.GroupRpcClient
+		User           *rpcclient.UserRpcClient
+		Conversation   *rpcclient.ConversationRpcClient
+		friend         *rpccache.FriendLocalCache
+		//friend                 *rpcclient.FriendRpcClient
 		GroupLocalCache        *localcache.GroupLocalCache
 		ConversationLocalCache *localcache.ConversationLocalCache
 		Handlers               MessageInterceptorChain
@@ -79,7 +81,6 @@ func Start(client discoveryregistry.SvcDiscoveryRegistry, server *grpc.Server) e
 	conversationClient := rpcclient.NewConversationRpcClient(client)
 	userRpcClient := rpcclient.NewUserRpcClient(client)
 	groupRpcClient := rpcclient.NewGroupRpcClient(client)
-	friendRpcClient := rpcclient.NewFriendRpcClient(client)
 	msgDatabase := controller.NewCommonMsgDatabase(msgDocModel, cacheModel)
 	s := &msgServer{
 		Conversation:           &conversationClient,
@@ -89,7 +90,7 @@ func Start(client discoveryregistry.SvcDiscoveryRegistry, server *grpc.Server) e
 		RegisterCenter:         client,
 		GroupLocalCache:        localcache.NewGroupLocalCache(&groupRpcClient),
 		ConversationLocalCache: localcache.NewConversationLocalCache(&conversationClient),
-		friend:                 &friendRpcClient,
+		friend:                 rpccache.NewFriendLocalCache(rpcclient.NewFriendRpcClient(client)),
 	}
 	s.notificationSender = rpcclient.NewNotificationSender(rpcclient.WithLocalSendMsg(s.SendMsg))
 	s.addInterceptorHandler(MessageHasReadEnabled)
diff --git a/pkg/common/cachekey/black.go b/pkg/common/cachekey/black.go
new file mode 100644
index 000000000..841e10c6a
--- /dev/null
+++ b/pkg/common/cachekey/black.go
@@ -0,0 +1,15 @@
+package cachekey
+
+const (
+	blackIDsKey = "BLACK_IDS:"
+	isBlackKey  = "IS_BLACK:"
+)
+
+func GetBlackIDsKey(ownerUserID string) string {
+	return blackIDsKey + ownerUserID
+
+}
+
+func GetIsBlackIDsKey(possibleBlackUserID, userID string) string {
+	return isBlackKey + possibleBlackUserID + "-" + userID
+}
diff --git a/pkg/common/cachekey/conversation.go b/pkg/common/cachekey/conversation.go
new file mode 100644
index 000000000..eb5b83f0e
--- /dev/null
+++ b/pkg/common/cachekey/conversation.go
@@ -0,0 +1,48 @@
+package cachekey
+
+import "time"
+
+const (
+	conversationKey                          = "CONVERSATION:"
+	conversationIDsKey                       = "CONVERSATION_IDS:"
+	conversationIDsHashKey                   = "CONVERSATION_IDS_HASH:"
+	conversationHasReadSeqKey                = "CONVERSATION_HAS_READ_SEQ:"
+	recvMsgOptKey                            = "RECV_MSG_OPT:"
+	superGroupRecvMsgNotNotifyUserIDsKey     = "SUPER_GROUP_RECV_MSG_NOT_NOTIFY_USER_IDS:"
+	superGroupRecvMsgNotNotifyUserIDsHashKey = "SUPER_GROUP_RECV_MSG_NOT_NOTIFY_USER_IDS_HASH:"
+	conversationNotReceiveMessageUserIDsKey  = "CONVERSATION_NOT_RECEIVE_MESSAGE_USER_IDS:"
+
+	conversationExpireTime = time.Second * 60 * 60 * 12
+)
+
+func GetConversationKey(ownerUserID, conversationID string) string {
+	return conversationKey + ownerUserID + ":" + conversationID
+}
+
+func GetConversationIDsKey(ownerUserID string) string {
+	return conversationIDsKey + ownerUserID
+}
+
+func GetSuperGroupRecvNotNotifyUserIDsKey(groupID string) string {
+	return superGroupRecvMsgNotNotifyUserIDsKey + groupID
+}
+
+func GetRecvMsgOptKey(ownerUserID, conversationID string) string {
+	return recvMsgOptKey + ownerUserID + ":" + conversationID
+}
+
+func GetSuperGroupRecvNotNotifyUserIDsHashKey(groupID string) string {
+	return superGroupRecvMsgNotNotifyUserIDsHashKey + groupID
+}
+
+func GetConversationHasReadSeqKey(ownerUserID, conversationID string) string {
+	return conversationHasReadSeqKey + ownerUserID + ":" + conversationID
+}
+
+func GetConversationNotReceiveMessageUserIDsKey(conversationID string) string {
+	return conversationNotReceiveMessageUserIDsKey + conversationID
+}
+
+func GetUserConversationIDsHashKey(ownerUserID string) string {
+	return conversationIDsHashKey + ownerUserID
+}
diff --git a/pkg/common/cachekey/friend.go b/pkg/common/cachekey/friend.go
new file mode 100644
index 000000000..1f9d4e94f
--- /dev/null
+++ b/pkg/common/cachekey/friend.go
@@ -0,0 +1,27 @@
+package cachekey
+
+import "time"
+
+const (
+	friendExpireTime    = time.Second * 60 * 60 * 12
+	friendIDsKey        = "FRIEND_IDS:"
+	twoWayFriendsIDsKey = "COMMON_FRIENDS_IDS:"
+	friendKey           = "FRIEND_INFO:"
+	isFriendKey         = "IS_FRIEND:"
+)
+
+func GetFriendIDsKey(ownerUserID string) string {
+	return friendIDsKey + ownerUserID
+}
+
+func GetTwoWayFriendsIDsKey(ownerUserID string) string {
+	return twoWayFriendsIDsKey + ownerUserID
+}
+
+func GetFriendKey(ownerUserID, friendUserID string) string {
+	return friendKey + ownerUserID + "-" + friendUserID
+}
+
+func GetIsFriendKey(possibleFriendUserID, userID string) string {
+	return isFriendKey + possibleFriendUserID + "-" + userID
+}
diff --git a/pkg/common/cachekey/group.go b/pkg/common/cachekey/group.go
new file mode 100644
index 000000000..3e5431b83
--- /dev/null
+++ b/pkg/common/cachekey/group.go
@@ -0,0 +1,45 @@
+package cachekey
+
+import (
+	"strconv"
+	"time"
+)
+
+const (
+	groupExpireTime            = time.Second * 60 * 60 * 12
+	groupInfoKey               = "GROUP_INFO:"
+	groupMemberIDsKey          = "GROUP_MEMBER_IDS:"
+	groupMembersHashKey        = "GROUP_MEMBERS_HASH2:"
+	groupMemberInfoKey         = "GROUP_MEMBER_INFO:"
+	joinedGroupsKey            = "JOIN_GROUPS_KEY:"
+	groupMemberNumKey          = "GROUP_MEMBER_NUM_CACHE:"
+	groupRoleLevelMemberIDsKey = "GROUP_ROLE_LEVEL_MEMBER_IDS:"
+)
+
+func GetGroupInfoKey(groupID string) string {
+	return groupInfoKey + groupID
+}
+
+func GetJoinedGroupsKey(userID string) string {
+	return joinedGroupsKey + userID
+}
+
+func GetGroupMembersHashKey(groupID string) string {
+	return groupMembersHashKey + groupID
+}
+
+func GetGroupMemberIDsKey(groupID string) string {
+	return groupMemberIDsKey + groupID
+}
+
+func GetGroupMemberInfoKey(groupID, userID string) string {
+	return groupMemberInfoKey + groupID + "-" + userID
+}
+
+func GetGroupMemberNumKey(groupID string) string {
+	return groupMemberNumKey + groupID
+}
+
+func GetGroupRoleLevelMemberIDsKey(groupID string, roleLevel int32) string {
+	return groupRoleLevelMemberIDsKey + groupID + "-" + strconv.Itoa(int(roleLevel))
+}
diff --git a/pkg/common/cachekey/msg.go b/pkg/common/cachekey/msg.go
new file mode 100644
index 000000000..b19c4f473
--- /dev/null
+++ b/pkg/common/cachekey/msg.go
@@ -0,0 +1,23 @@
+package cachekey
+
+const (
+	maxSeq                 = "MAX_SEQ:"
+	minSeq                 = "MIN_SEQ:"
+	conversationUserMinSeq = "CON_USER_MIN_SEQ:"
+	hasReadSeq             = "HAS_READ_SEQ:"
+
+	//appleDeviceToken = "DEVICE_TOKEN"
+	getuiToken  = "GETUI_TOKEN"
+	getuiTaskID = "GETUI_TASK_ID"
+	//signalCache      = "SIGNAL_CACHE:"
+	//signalListCache  = "SIGNAL_LIST_CACHE:"
+	FCM_TOKEN = "FCM_TOKEN:"
+
+	messageCache            = "MESSAGE_CACHE:"
+	messageDelUserList      = "MESSAGE_DEL_USER_LIST:"
+	userDelMessagesList     = "USER_DEL_MESSAGES_LIST:"
+	sendMsgFailedFlag       = "SEND_MSG_FAILED_FLAG:"
+	userBadgeUnreadCountSum = "USER_BADGE_UNREAD_COUNT_SUM:"
+	exTypeKeyLocker         = "EX_LOCK:"
+	uidPidToken             = "UID_PID_TOKEN_STATUS:"
+)
diff --git a/pkg/common/cachekey/s3.go b/pkg/common/cachekey/s3.go
new file mode 100644
index 000000000..cbf8bfad5
--- /dev/null
+++ b/pkg/common/cachekey/s3.go
@@ -0,0 +1 @@
+package cachekey
diff --git a/pkg/common/cachekey/user.go b/pkg/common/cachekey/user.go
new file mode 100644
index 000000000..ed11641d5
--- /dev/null
+++ b/pkg/common/cachekey/user.go
@@ -0,0 +1,21 @@
+package cachekey
+
+import "time"
+
+const (
+	userExpireTime            = time.Second * 60 * 60 * 12
+	userInfoKey               = "USER_INFO:"
+	userGlobalRecvMsgOptKey   = "USER_GLOBAL_RECV_MSG_OPT_KEY:"
+	olineStatusKey            = "ONLINE_STATUS:"
+	userOlineStatusExpireTime = time.Second * 60 * 60 * 24
+	statusMod                 = 501
+	platformID                = "_PlatformIDSuffix"
+)
+
+func GetUserInfoKey(userID string) string {
+	return userInfoKey + userID
+}
+
+func GetUserGlobalRecvMsgOptKey(userID string) string {
+	return userGlobalRecvMsgOptKey + userID
+}
diff --git a/pkg/common/db/cache/black.go b/pkg/common/db/cache/black.go
index d1abe945c..f69b83afe 100644
--- a/pkg/common/db/cache/black.go
+++ b/pkg/common/db/cache/black.go
@@ -16,6 +16,7 @@ package cache
 
 import (
 	"context"
+	"github.com/openimsdk/open-im-server/v3/pkg/common/cachekey"
 	"time"
 
 	"github.com/dtm-labs/rockscache"
@@ -71,7 +72,7 @@ func (b *BlackCacheRedis) NewCache() BlackCache {
 }
 
 func (b *BlackCacheRedis) getBlackIDsKey(ownerUserID string) string {
-	return blackIDsKey + ownerUserID
+	return cachekey.GetBlackIDsKey(ownerUserID)
 }
 
 func (b *BlackCacheRedis) GetBlackIDs(ctx context.Context, userID string) (blackIDs []string, err error) {
diff --git a/pkg/common/db/cache/conversation.go b/pkg/common/db/cache/conversation.go
index a7018bc18..cf638f38f 100644
--- a/pkg/common/db/cache/conversation.go
+++ b/pkg/common/db/cache/conversation.go
@@ -17,6 +17,7 @@ package cache
 import (
 	"context"
 	"errors"
+	"github.com/openimsdk/open-im-server/v3/pkg/common/cachekey"
 	"math/big"
 	"strings"
 	"time"
@@ -30,14 +31,14 @@ import (
 )
 
 const (
-	conversationKey                          = "CONVERSATION:"
-	conversationIDsKey                       = "CONVERSATION_IDS:"
-	conversationIDsHashKey                   = "CONVERSATION_IDS_HASH:"
-	conversationHasReadSeqKey                = "CONVERSATION_HAS_READ_SEQ:"
-	recvMsgOptKey                            = "RECV_MSG_OPT:"
-	superGroupRecvMsgNotNotifyUserIDsKey     = "SUPER_GROUP_RECV_MSG_NOT_NOTIFY_USER_IDS:"
-	superGroupRecvMsgNotNotifyUserIDsHashKey = "SUPER_GROUP_RECV_MSG_NOT_NOTIFY_USER_IDS_HASH:"
-	conversationNotReceiveMessageUserIDsKey  = "CONVERSATION_NOT_RECEIVE_MESSAGE_USER_IDS:"
+	//conversationKey                          = "CONVERSATION:"
+	//conversationIDsKey                       = "CONVERSATION_IDS:"
+	//conversationIDsHashKey                   = "CONVERSATION_IDS_HASH:"
+	//conversationHasReadSeqKey                = "CONVERSATION_HAS_READ_SEQ:"
+	//recvMsgOptKey                            = "RECV_MSG_OPT:"
+	//superGroupRecvMsgNotNotifyUserIDsKey     = "SUPER_GROUP_RECV_MSG_NOT_NOTIFY_USER_IDS:"
+	//superGroupRecvMsgNotNotifyUserIDsHashKey = "SUPER_GROUP_RECV_MSG_NOT_NOTIFY_USER_IDS_HASH:"
+	//conversationNotReceiveMessageUserIDsKey  = "CONVERSATION_NOT_RECEIVE_MESSAGE_USER_IDS:"
 
 	conversationExpireTime = time.Second * 60 * 60 * 12
 )
@@ -125,31 +126,35 @@ func (c *ConversationRedisCache) NewCache() ConversationCache {
 }
 
 func (c *ConversationRedisCache) getConversationKey(ownerUserID, conversationID string) string {
-	return conversationKey + ownerUserID + ":" + conversationID
+	return cachekey.GetConversationKey(ownerUserID, conversationID)
 }
 
 func (c *ConversationRedisCache) getConversationIDsKey(ownerUserID string) string {
-	return conversationIDsKey + ownerUserID
+	return cachekey.GetConversationIDsKey(ownerUserID)
 }
 
 func (c *ConversationRedisCache) getSuperGroupRecvNotNotifyUserIDsKey(groupID string) string {
-	return superGroupRecvMsgNotNotifyUserIDsKey + groupID
+	return cachekey.GetSuperGroupRecvNotNotifyUserIDsKey(groupID)
 }
 
 func (c *ConversationRedisCache) getRecvMsgOptKey(ownerUserID, conversationID string) string {
-	return recvMsgOptKey + ownerUserID + ":" + conversationID
+	return cachekey.GetRecvMsgOptKey(ownerUserID, conversationID)
 }
 
 func (c *ConversationRedisCache) getSuperGroupRecvNotNotifyUserIDsHashKey(groupID string) string {
-	return superGroupRecvMsgNotNotifyUserIDsHashKey + groupID
+	return cachekey.GetSuperGroupRecvNotNotifyUserIDsHashKey(groupID)
 }
 
 func (c *ConversationRedisCache) getConversationHasReadSeqKey(ownerUserID, conversationID string) string {
-	return conversationHasReadSeqKey + ownerUserID + ":" + conversationID
+	return cachekey.GetConversationHasReadSeqKey(ownerUserID, conversationID)
 }
 
 func (c *ConversationRedisCache) getConversationNotReceiveMessageUserIDsKey(conversationID string) string {
-	return conversationNotReceiveMessageUserIDsKey + conversationID
+	return cachekey.GetConversationNotReceiveMessageUserIDsKey(conversationID)
+}
+
+func (c *ConversationRedisCache) getUserConversationIDsHashKey(ownerUserID string) string {
+	return cachekey.GetUserConversationIDsHashKey(ownerUserID)
 }
 
 func (c *ConversationRedisCache) GetUserConversationIDs(ctx context.Context, ownerUserID string) ([]string, error) {
@@ -169,10 +174,6 @@ func (c *ConversationRedisCache) DelConversationIDs(userIDs ...string) Conversat
 	return cache
 }
 
-func (c *ConversationRedisCache) getUserConversationIDsHashKey(ownerUserID string) string {
-	return conversationIDsHashKey + ownerUserID
-}
-
 func (c *ConversationRedisCache) GetUserConversationIDsHash(ctx context.Context, ownerUserID string) (hash uint64, err error) {
 	return getCache(
 		ctx,
diff --git a/pkg/common/db/cache/friend.go b/pkg/common/db/cache/friend.go
index 1708f7664..4805271a3 100644
--- a/pkg/common/db/cache/friend.go
+++ b/pkg/common/db/cache/friend.go
@@ -16,6 +16,7 @@ package cache
 
 import (
 	"context"
+	"github.com/openimsdk/open-im-server/v3/pkg/common/cachekey"
 	"time"
 
 	"github.com/dtm-labs/rockscache"
@@ -27,10 +28,10 @@ import (
 )
 
 const (
-	friendExpireTime    = time.Second * 60 * 60 * 12
-	friendIDsKey        = "FRIEND_IDS:"
-	TwoWayFriendsIDsKey = "COMMON_FRIENDS_IDS:"
-	friendKey           = "FRIEND_INFO:"
+	friendExpireTime = time.Second * 60 * 60 * 12
+	//friendIDsKey        = "FRIEND_IDS:"
+	//TwoWayFriendsIDsKey = "COMMON_FRIENDS_IDS:"
+	//friendKey           = "FRIEND_INFO:"
 )
 
 // FriendCache is an interface for caching friend-related data.
@@ -78,17 +79,17 @@ func (f *FriendCacheRedis) NewCache() FriendCache {
 
 // getFriendIDsKey returns the key for storing friend IDs in the cache.
 func (f *FriendCacheRedis) getFriendIDsKey(ownerUserID string) string {
-	return friendIDsKey + ownerUserID
+	return cachekey.GetFriendIDsKey(ownerUserID)
 }
 
 // getTwoWayFriendsIDsKey returns the key for storing two-way friend IDs in the cache.
 func (f *FriendCacheRedis) getTwoWayFriendsIDsKey(ownerUserID string) string {
-	return TwoWayFriendsIDsKey + ownerUserID
+	return cachekey.GetTwoWayFriendsIDsKey(ownerUserID)
 }
 
 // getFriendKey returns the key for storing friend info in the cache.
 func (f *FriendCacheRedis) getFriendKey(ownerUserID, friendUserID string) string {
-	return friendKey + ownerUserID + "-" + friendUserID
+	return cachekey.GetFriendKey(ownerUserID, friendUserID)
 }
 
 // GetFriendIDs retrieves friend IDs from the cache or the database if not found.
diff --git a/pkg/common/db/cache/group.go b/pkg/common/db/cache/group.go
index 57fcf1a9b..58c42ccfd 100644
--- a/pkg/common/db/cache/group.go
+++ b/pkg/common/db/cache/group.go
@@ -17,7 +17,7 @@ package cache
 import (
 	"context"
 	"fmt"
-	"strconv"
+	"github.com/openimsdk/open-im-server/v3/pkg/common/cachekey"
 	"time"
 
 	"github.com/OpenIMSDK/protocol/constant"
@@ -34,15 +34,14 @@ import (
 )
 
 const (
-	groupExpireTime     = time.Second * 60 * 60 * 12
-	groupInfoKey        = "GROUP_INFO:"
-	groupMemberIDsKey   = "GROUP_MEMBER_IDS:"
-	groupMembersHashKey = "GROUP_MEMBERS_HASH2:"
-	groupMemberInfoKey  = "GROUP_MEMBER_INFO:"
-	//groupOwnerInfoKey   = "GROUP_OWNER_INFO:".
-	joinedGroupsKey            = "JOIN_GROUPS_KEY:"
-	groupMemberNumKey          = "GROUP_MEMBER_NUM_CACHE:"
-	groupRoleLevelMemberIDsKey = "GROUP_ROLE_LEVEL_MEMBER_IDS:"
+	groupExpireTime = time.Second * 60 * 60 * 12
+	//groupInfoKey        = "GROUP_INFO:"
+	//groupMemberIDsKey   = "GROUP_MEMBER_IDS:"
+	//groupMembersHashKey = "GROUP_MEMBERS_HASH2:"
+	//groupMemberInfoKey  = "GROUP_MEMBER_INFO:"
+	//joinedGroupsKey            = "JOIN_GROUPS_KEY:"
+	//groupMemberNumKey          = "GROUP_MEMBER_NUM_CACHE:"
+	//groupRoleLevelMemberIDsKey = "GROUP_ROLE_LEVEL_MEMBER_IDS:"
 )
 
 type GroupHash interface {
@@ -126,31 +125,31 @@ func (g *GroupCacheRedis) NewCache() GroupCache {
 }
 
 func (g *GroupCacheRedis) getGroupInfoKey(groupID string) string {
-	return groupInfoKey + groupID
+	return cachekey.GetGroupInfoKey(groupID)
 }
 
 func (g *GroupCacheRedis) getJoinedGroupsKey(userID string) string {
-	return joinedGroupsKey + userID
+	return cachekey.GetJoinedGroupsKey(userID)
 }
 
 func (g *GroupCacheRedis) getGroupMembersHashKey(groupID string) string {
-	return groupMembersHashKey + groupID
+	return cachekey.GetGroupMembersHashKey(groupID)
 }
 
 func (g *GroupCacheRedis) getGroupMemberIDsKey(groupID string) string {
-	return groupMemberIDsKey + groupID
+	return cachekey.GetGroupMemberIDsKey(groupID)
 }
 
 func (g *GroupCacheRedis) getGroupMemberInfoKey(groupID, userID string) string {
-	return groupMemberInfoKey + groupID + "-" + userID
+	return cachekey.GetGroupMemberInfoKey(groupID, userID)
 }
 
 func (g *GroupCacheRedis) getGroupMemberNumKey(groupID string) string {
-	return groupMemberNumKey + groupID
+	return cachekey.GetGroupMemberNumKey(groupID)
 }
 
 func (g *GroupCacheRedis) getGroupRoleLevelMemberIDsKey(groupID string, roleLevel int32) string {
-	return groupRoleLevelMemberIDsKey + groupID + "-" + strconv.Itoa(int(roleLevel))
+	return cachekey.GetGroupRoleLevelMemberIDsKey(groupID, roleLevel)
 }
 
 func (g *GroupCacheRedis) GetGroupIndex(group *relationtb.GroupModel, keys []string) (int, error) {
diff --git a/pkg/common/db/cache/msg.go b/pkg/common/db/cache/msg.go
index 5cd3cb22c..c1749e719 100644
--- a/pkg/common/db/cache/msg.go
+++ b/pkg/common/db/cache/msg.go
@@ -44,12 +44,12 @@ const (
 	conversationUserMinSeq = "CON_USER_MIN_SEQ:"
 	hasReadSeq             = "HAS_READ_SEQ:"
 
-	appleDeviceToken = "DEVICE_TOKEN"
-	getuiToken       = "GETUI_TOKEN"
-	getuiTaskID      = "GETUI_TASK_ID"
-	signalCache      = "SIGNAL_CACHE:"
-	signalListCache  = "SIGNAL_LIST_CACHE:"
-	FCM_TOKEN        = "FCM_TOKEN:"
+	//appleDeviceToken = "DEVICE_TOKEN"
+	getuiToken  = "GETUI_TOKEN"
+	getuiTaskID = "GETUI_TASK_ID"
+	//signalCache      = "SIGNAL_CACHE:"
+	//signalListCache  = "SIGNAL_LIST_CACHE:"
+	FCM_TOKEN = "FCM_TOKEN:"
 
 	messageCache            = "MESSAGE_CACHE:"
 	messageDelUserList      = "MESSAGE_DEL_USER_LIST:"
@@ -148,6 +148,10 @@ func (c *msgCache) getHasReadSeqKey(conversationID string, userID string) string
 	return hasReadSeq + userID + ":" + conversationID
 }
 
+func (c *msgCache) getConversationUserMinSeqKey(conversationID, userID string) string {
+	return conversationUserMinSeq + conversationID + "u:" + userID
+}
+
 func (c *msgCache) setSeq(ctx context.Context, conversationID string, seq int64, getkey func(conversationID string) string) error {
 	return utils.Wrap1(c.rdb.Set(ctx, getkey(conversationID), seq, 0).Err())
 }
@@ -209,10 +213,6 @@ func (c *msgCache) GetMinSeq(ctx context.Context, conversationID string) (int64,
 	return c.getSeq(ctx, conversationID, c.getMinSeqKey)
 }
 
-func (c *msgCache) getConversationUserMinSeqKey(conversationID, userID string) string {
-	return conversationUserMinSeq + conversationID + "u:" + userID
-}
-
 func (c *msgCache) GetConversationUserMinSeq(ctx context.Context, conversationID string, userID string) (int64, error) {
 	return utils.Wrap2(c.rdb.Get(ctx, c.getConversationUserMinSeqKey(conversationID, userID)).Int64())
 }
diff --git a/pkg/common/db/cache/user.go b/pkg/common/db/cache/user.go
index 979bd06e4..14ed7988e 100644
--- a/pkg/common/db/cache/user.go
+++ b/pkg/common/db/cache/user.go
@@ -18,6 +18,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"github.com/openimsdk/open-im-server/v3/pkg/common/cachekey"
 	"hash/crc32"
 	"strconv"
 	"time"
@@ -36,8 +37,8 @@ import (
 )
 
 const (
-	userExpireTime            = time.Second * 60 * 60 * 12
-	userInfoKey               = "USER_INFO:"
+	userExpireTime = time.Second * 60 * 60 * 12
+	//userInfoKey               = "USER_INFO:"
 	userGlobalRecvMsgOptKey   = "USER_GLOBAL_RECV_MSG_OPT_KEY:"
 	olineStatusKey            = "ONLINE_STATUS:"
 	userOlineStatusExpireTime = time.Second * 60 * 60 * 24
@@ -93,18 +94,17 @@ func (u *UserCacheRedis) NewCache() UserCache {
 }
 
 func (u *UserCacheRedis) getUserInfoKey(userID string) string {
-	return userInfoKey + userID
+	return cachekey.GetUserInfoKey(userID)
 }
 
 func (u *UserCacheRedis) getUserGlobalRecvMsgOptKey(userID string) string {
-	return userGlobalRecvMsgOptKey + userID
+	return cachekey.GetUserGlobalRecvMsgOptKey(userID)
 }
 
 func (u *UserCacheRedis) GetUserInfo(ctx context.Context, userID string) (userInfo *relationtb.UserModel, err error) {
 	return getCache(ctx, u.rcClient, u.getUserInfoKey(userID), u.expireTime, func(ctx context.Context) (*relationtb.UserModel, error) {
 		return u.userDB.Take(ctx, userID)
-	},
-	)
+	})
 }
 
 func (u *UserCacheRedis) GetUsersInfo(ctx context.Context, userIDs []string) ([]*relationtb.UserModel, error) {
diff --git a/pkg/common/localcache/business.go b/pkg/common/localcache/business.go
new file mode 100644
index 000000000..221eb2664
--- /dev/null
+++ b/pkg/common/localcache/business.go
@@ -0,0 +1,69 @@
+package localcache
+
+import (
+	"context"
+	"encoding/json"
+	"github.com/OpenIMSDK/tools/log"
+	"github.com/dtm-labs/rockscache"
+	"github.com/redis/go-redis/v9"
+)
+
+func WithRedisDeleteSubscribe(topic string, cli redis.UniversalClient) Option {
+	return WithDeleteLocal(func(fn func(key ...string)) {
+		if fn == nil {
+			log.ZDebug(context.Background(), "WithRedisDeleteSubscribe fn is nil", "topic", topic)
+			return
+		}
+		msg := cli.Subscribe(context.Background(), topic).Channel()
+		for m := range msg {
+			var key []string
+			if err := json.Unmarshal([]byte(m.Payload), &key); err != nil {
+				log.ZError(context.Background(), "WithRedisDeleteSubscribe json unmarshal error", err, "topic", topic, "payload", m.Payload)
+				continue
+			}
+			if len(key) == 0 {
+				continue
+			}
+			fn(key...)
+		}
+	})
+}
+
+func WithRedisDeletePublish(topic string, cli redis.UniversalClient) Option {
+	return WithDeleteKeyBefore(func(ctx context.Context, key ...string) {
+		data, err := json.Marshal(key)
+		if err != nil {
+			log.ZError(ctx, "json marshal error", err, "topic", topic, "key", key)
+			return
+		}
+		if err := cli.Publish(ctx, topic, data).Err(); err != nil {
+			log.ZError(ctx, "redis publish error", err, "topic", topic, "key", key)
+		} else {
+			log.ZDebug(ctx, "redis publish success", "topic", topic, "key", key)
+		}
+	})
+}
+
+func WithRedisDelete(cli redis.UniversalClient) Option {
+	return WithDeleteKeyBefore(func(ctx context.Context, key ...string) {
+		for _, s := range key {
+			if err := cli.Del(ctx, s).Err(); err != nil {
+				log.ZError(ctx, "redis delete error", err, "key", s)
+			} else {
+				log.ZDebug(ctx, "redis delete success", "key", s)
+			}
+		}
+	})
+}
+
+func WithRocksCacheDelete(cli *rockscache.Client) Option {
+	return WithDeleteKeyBefore(func(ctx context.Context, key ...string) {
+		for _, k := range key {
+			if err := cli.TagAsDeleted2(ctx, k); err != nil {
+				log.ZError(ctx, "rocksdb delete error", err, "key", k)
+			} else {
+				log.ZDebug(ctx, "rocksdb delete success", "key", k)
+			}
+		}
+	})
+}
diff --git a/pkg/common/localcache/cache.go b/pkg/common/localcache/cache.go
new file mode 100644
index 000000000..f70f9435b
--- /dev/null
+++ b/pkg/common/localcache/cache.go
@@ -0,0 +1,66 @@
+package localcache
+
+import (
+	"context"
+	"github.com/openimsdk/open-im-server/v3/pkg/common/localcache/local"
+)
+
+type Cache[V any] interface {
+	Get(ctx context.Context, key string, fetch func(ctx context.Context) (V, error)) (V, error)
+	Del(ctx context.Context, key ...string)
+}
+
+func New[V any](opts ...Option) Cache[V] {
+	opt := defaultOption()
+	for _, o := range opts {
+		o(opt)
+	}
+	if opt.enable {
+		lc := local.NewCache[V](opt.localSlotNum, opt.localSlotSize, opt.localSuccessTTL, opt.localFailedTTL, opt.target)
+		c := &cache[V]{
+			opt:   opt,
+			local: lc,
+		}
+		go func() {
+			c.opt.delCh(c.del)
+		}()
+		return c
+	} else {
+		return &cache[V]{
+			opt: opt,
+		}
+	}
+}
+
+type cache[V any] struct {
+	opt   *option
+	local local.Cache[V]
+}
+
+func (c *cache[V]) del(key ...string) {
+	for _, k := range key {
+		c.local.Del(k)
+	}
+}
+
+func (c *cache[V]) Get(ctx context.Context, key string, fetch func(ctx context.Context) (V, error)) (V, error) {
+	if c.opt.enable {
+		return c.local.Get(key, func() (V, error) {
+			return fetch(ctx)
+		})
+	} else {
+		return fetch(ctx)
+	}
+}
+
+func (c *cache[V]) Del(ctx context.Context, key ...string) {
+	if len(key) == 0 {
+		return
+	}
+	for _, fn := range c.opt.delFn {
+		fn(ctx, key...)
+	}
+	if c.opt.enable {
+		c.del(key...)
+	}
+}
diff --git a/pkg/common/localcache/local/cache.go b/pkg/common/localcache/local/cache.go
new file mode 100644
index 000000000..a957166fe
--- /dev/null
+++ b/pkg/common/localcache/local/cache.go
@@ -0,0 +1,51 @@
+package local
+
+import (
+	"hash/fnv"
+	"time"
+	"unsafe"
+)
+
+type Cache[V any] interface {
+	Get(key string, fetch func() (V, error)) (V, error)
+	Del(key string) bool
+}
+
+func NewCache[V any](slotNum, slotSize int, successTTL, failedTTL time.Duration, target Target) Cache[V] {
+	c := &cache[V]{
+		n:      uint64(slotNum),
+		slots:  make([]*LRU[string, V], slotNum),
+		target: target,
+	}
+	for i := 0; i < slotNum; i++ {
+		c.slots[i] = NewLRU[string, V](slotSize, successTTL, failedTTL, c.target)
+	}
+	return c
+}
+
+type cache[V any] struct {
+	n      uint64
+	slots  []*LRU[string, V]
+	target Target
+}
+
+func (c *cache[V]) index(s string) uint64 {
+	h := fnv.New64a()
+	_, _ = h.Write(*(*[]byte)(unsafe.Pointer(&s)))
+	//_, _ = h.Write([]byte(s))
+	return h.Sum64() % c.n
+}
+
+func (c *cache[V]) Get(key string, fetch func() (V, error)) (V, error) {
+	return c.slots[c.index(key)].Get(key, fetch)
+}
+
+func (c *cache[V]) Del(key string) bool {
+	if c.slots[c.index(key)].Del(key) {
+		c.target.IncrDelHit()
+		return true
+	} else {
+		c.target.IncrDelNotFound()
+		return false
+	}
+}
diff --git a/pkg/common/localcache/local/lru.go b/pkg/common/localcache/local/lru.go
new file mode 100644
index 000000000..0befdfcab
--- /dev/null
+++ b/pkg/common/localcache/local/lru.go
@@ -0,0 +1,76 @@
+package local
+
+import (
+	"github.com/hashicorp/golang-lru/v2/simplelru"
+	"sync"
+	"time"
+)
+
+type waitItem[V any] struct {
+	lock    sync.Mutex
+	expires int64
+	active  bool
+	err     error
+	value   V
+}
+
+func NewLRU[K comparable, V any](size int, successTTL, failedTTL time.Duration, target Target) *LRU[K, V] {
+	core, err := simplelru.NewLRU[K, *waitItem[V]](size, nil)
+	if err != nil {
+		panic(err)
+	}
+	return &LRU[K, V]{
+		core:       core,
+		successTTL: successTTL,
+		failedTTL:  failedTTL,
+		target:     target,
+	}
+}
+
+type LRU[K comparable, V any] struct {
+	lock       sync.Mutex
+	core       *simplelru.LRU[K, *waitItem[V]]
+	successTTL time.Duration
+	failedTTL  time.Duration
+	target     Target
+}
+
+func (x *LRU[K, V]) Get(key K, fetch func() (V, error)) (V, error) {
+	x.lock.Lock()
+	v, ok := x.core.Get(key)
+	if ok {
+		x.lock.Unlock()
+		v.lock.Lock()
+		expires, value, err := v.expires, v.value, v.err
+		if expires != 0 && expires > time.Now().UnixMilli() {
+			v.lock.Unlock()
+			x.target.IncrGetHit()
+			return value, err
+		}
+	} else {
+		v = &waitItem[V]{}
+		x.core.Add(key, v)
+		v.lock.Lock()
+		x.lock.Unlock()
+	}
+	defer v.lock.Unlock()
+	if v.expires > time.Now().UnixMilli() {
+		return v.value, v.err
+	}
+	v.value, v.err = fetch()
+	if v.err == nil {
+		v.expires = time.Now().Add(x.successTTL).UnixMilli()
+		x.target.IncrGetSuccess()
+	} else {
+		v.expires = time.Now().Add(x.failedTTL).UnixMilli()
+		x.target.IncrGetFailed()
+	}
+	return v.value, v.err
+}
+
+func (x *LRU[K, V]) Del(key K) bool {
+	x.lock.Lock()
+	ok := x.core.Remove(key)
+	x.lock.Unlock()
+	return ok
+}
diff --git a/pkg/common/localcache/local/lru_test.go b/pkg/common/localcache/local/lru_test.go
new file mode 100644
index 000000000..adbd52277
--- /dev/null
+++ b/pkg/common/localcache/local/lru_test.go
@@ -0,0 +1,95 @@
+package local
+
+import (
+	"fmt"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+)
+
+type cacheTarget struct {
+	getHit      int64
+	getSuccess  int64
+	getFailed   int64
+	delHit      int64
+	delNotFound int64
+}
+
+func (r *cacheTarget) IncrGetHit() {
+	atomic.AddInt64(&r.getHit, 1)
+}
+
+func (r *cacheTarget) IncrGetSuccess() {
+	atomic.AddInt64(&r.getSuccess, 1)
+}
+
+func (r *cacheTarget) IncrGetFailed() {
+	atomic.AddInt64(&r.getFailed, 1)
+}
+
+func (r *cacheTarget) IncrDelHit() {
+	atomic.AddInt64(&r.delHit, 1)
+}
+
+func (r *cacheTarget) IncrDelNotFound() {
+	atomic.AddInt64(&r.delNotFound, 1)
+}
+
+func (r *cacheTarget) String() string {
+	return fmt.Sprintf("getHit: %d, getSuccess: %d, getFailed: %d, delHit: %d, delNotFound: %d", r.getHit, r.getSuccess, r.getFailed, r.delHit, r.delNotFound)
+}
+
+func TestName(t *testing.T) {
+	target := &cacheTarget{}
+	l := NewCache[string](100, 1000, time.Second*20, time.Second*5, target)
+	//l := NewLRU[string, string](1000, time.Second*20, time.Second*5, target)
+
+	fn := func(key string, n int, fetch func() (string, error)) {
+		for i := 0; i < n; i++ {
+			//v, err := l.Get(key, fetch)
+			//if err == nil {
+			//	t.Log("key", key, "value", v)
+			//} else {
+			//	t.Error("key", key, err)
+			//}
+			l.Get(key, fetch)
+			//time.Sleep(time.Second / 100)
+		}
+	}
+
+	tmp := make(map[string]struct{})
+
+	var wg sync.WaitGroup
+	for i := 0; i < 10000; i++ {
+		wg.Add(1)
+		key := fmt.Sprintf("key_%d", i%200)
+		tmp[key] = struct{}{}
+		go func() {
+			defer wg.Done()
+			//t.Log(key)
+			fn(key, 10000, func() (string, error) {
+				//time.Sleep(time.Second * 3)
+				//t.Log(time.Now(), "key", key, "fetch")
+				//if rand.Uint32()%5 == 0 {
+				//	return "value_" + key, nil
+				//}
+				//return "", errors.New("rand error")
+				return "value_" + key, nil
+			})
+		}()
+
+		//wg.Add(1)
+		//go func() {
+		//	defer wg.Done()
+		//	for i := 0; i < 10; i++ {
+		//		l.Del(key)
+		//		time.Sleep(time.Second / 3)
+		//	}
+		//}()
+	}
+	wg.Wait()
+	t.Log(len(tmp))
+	t.Log(target.String())
+
+}
diff --git a/pkg/common/localcache/local/target.go b/pkg/common/localcache/local/target.go
new file mode 100644
index 000000000..6cb134fb0
--- /dev/null
+++ b/pkg/common/localcache/local/target.go
@@ -0,0 +1,10 @@
+package local
+
+type Target interface {
+	IncrGetHit()
+	IncrGetSuccess()
+	IncrGetFailed()
+
+	IncrDelHit()
+	IncrDelNotFound()
+}
diff --git a/pkg/common/localcache/option.go b/pkg/common/localcache/option.go
new file mode 100644
index 000000000..01c9ce57d
--- /dev/null
+++ b/pkg/common/localcache/option.go
@@ -0,0 +1,113 @@
+package localcache
+
+import (
+	"context"
+	"github.com/openimsdk/open-im-server/v3/pkg/common/localcache/local"
+	"time"
+)
+
+func defaultOption() *option {
+	return &option{
+		enable:          true,
+		localSlotNum:    500,
+		localSlotSize:   20000,
+		localSuccessTTL: time.Minute,
+		localFailedTTL:  time.Second * 5,
+		delFn:           make([]func(ctx context.Context, key ...string), 0, 2),
+		target:          emptyTarget{},
+	}
+}
+
+type option struct {
+	enable          bool
+	localSlotNum    int
+	localSlotSize   int
+	localSuccessTTL time.Duration
+	localFailedTTL  time.Duration
+	delFn           []func(ctx context.Context, key ...string)
+	delCh           func(fn func(key ...string))
+	target          local.Target
+}
+
+type Option func(o *option)
+
+func WithDisable() Option {
+	return func(o *option) {
+		o.enable = false
+	}
+}
+
+func WithLocalSlotNum(localSlotNum int) Option {
+	if localSlotNum < 1 {
+		panic("localSlotNum should be greater than 0")
+	}
+	return func(o *option) {
+		o.localSlotNum = localSlotNum
+	}
+}
+
+func WithLocalSlotSize(localSlotSize int) Option {
+	if localSlotSize < 1 {
+		panic("localSlotSize should be greater than 0")
+	}
+	return func(o *option) {
+		o.localSlotSize = localSlotSize
+	}
+}
+
+func WithLocalSuccessTTL(localSuccessTTL time.Duration) Option {
+	if localSuccessTTL < 0 {
+		panic("localSuccessTTL should be greater than 0")
+	}
+	return func(o *option) {
+		o.localSuccessTTL = localSuccessTTL
+	}
+}
+
+func WithLocalFailedTTL(localFailedTTL time.Duration) Option {
+	if localFailedTTL < 0 {
+		panic("localFailedTTL should be greater than 0")
+	}
+	return func(o *option) {
+		o.localFailedTTL = localFailedTTL
+	}
+}
+
+func WithTarget(target local.Target) Option {
+	if target == nil {
+		panic("target should not be nil")
+	}
+	return func(o *option) {
+		o.target = target
+	}
+}
+
+func WithDeleteKeyBefore(fn func(ctx context.Context, key ...string)) Option {
+	if fn == nil {
+		panic("fn should not be nil")
+	}
+	return func(o *option) {
+		o.delFn = append(o.delFn, fn)
+	}
+}
+
+func WithDeleteLocal(fn func(fn func(key ...string))) Option {
+	if fn == nil {
+		panic("fn should not be nil")
+	}
+	return func(o *option) {
+		o.delCh = fn
+	}
+}
+
+type emptyTarget struct{}
+
+func (e emptyTarget) IncrGetHit() {}
+
+func (e emptyTarget) IncrGetSuccess() {}
+
+func (e emptyTarget) IncrGetFailed() {}
+
+func (e emptyTarget) IncrDelHit() {}
+
+func (e emptyTarget) IncrDelNotFound() {}
diff --git a/pkg/common/localcache/tool.go b/pkg/common/localcache/tool.go
new file mode 100644
index 000000000..ea3590823
--- /dev/null
+++ b/pkg/common/localcache/tool.go
@@ -0,0 +1,9 @@
+package localcache
+
+func AnyValue[V any](v any, err error) (V, error) {
+	if err != nil {
+		var zero V
+		return zero, err
+	}
+	return v.(V), nil
+}
diff --git a/pkg/rpccache/friend.go b/pkg/rpccache/friend.go
new file mode 100644
index 000000000..0585b2e9d
--- /dev/null
+++ b/pkg/rpccache/friend.go
@@ -0,0 +1,38 @@
+package rpccache
+
+import (
+	"context"
+	"github.com/openimsdk/open-im-server/v3/pkg/common/cachekey"
+	"github.com/openimsdk/open-im-server/v3/pkg/common/localcache"
+	"github.com/openimsdk/open-im-server/v3/pkg/rpcclient"
+)
+
+func NewFriendLocalCache(client rpcclient.FriendRpcClient) *FriendLocalCache {
+	return &FriendLocalCache{
+		local:  localcache.New[any](),
+		client: client,
+	}
+}
+
+type FriendLocalCache struct {
+	local  localcache.Cache[any]
+	client rpcclient.FriendRpcClient
+}
+
+func (f *FriendLocalCache) GetFriendIDs(ctx context.Context, ownerUserID string) ([]string, error) {
+	return localcache.AnyValue[[]string](f.local.Get(ctx, cachekey.GetFriendIDsKey(ownerUserID), func(ctx context.Context) (any, error) {
+		return f.client.GetFriendIDs(ctx, ownerUserID)
+	}))
+}
+
+func (f *FriendLocalCache) IsFriend(ctx context.Context, possibleFriendUserID, userID string) (bool, error) {
+	return localcache.AnyValue[bool](f.local.Get(ctx, cachekey.GetIsFriendKey(possibleFriendUserID, userID), func(ctx context.Context) (any, error) {
+		return f.client.IsFriend(ctx, possibleFriendUserID, userID)
+	}))
+}
+
+func (f *FriendLocalCache) IsBlocked(ctx context.Context, possibleBlackUserID, userID string) (bool, error) {
+	return localcache.AnyValue[bool](f.local.Get(ctx, cachekey.GetIsBlackIDsKey(possibleBlackUserID, userID), func(ctx context.Context) (any, error) {
+		return f.client.IsFriend(ctx, possibleBlackUserID, userID)
+	}))
+}