diff --git a/internal/utils/agents/agent_ip.go b/internal/utils/agents/agent_ip.go
index 3283d24..81e0aab 100644
--- a/internal/utils/agents/agent_ip.go
+++ b/internal/utils/agents/agent_ip.go
@@ -3,7 +3,7 @@
 package agents
 
 type AgentIP struct {
-	Id        int64
-	IP        string
-	AgentCode string
+	Id        int64  `json:"id"`
+	IP        string `json:"ip"`
+	AgentCode string `json:"agentCode"`
 }
diff --git a/internal/utils/agents/db.go b/internal/utils/agents/db.go
index 55a34d7..7ffa388 100644
--- a/internal/utils/agents/db.go
+++ b/internal/utils/agents/db.go
@@ -1,160 +1,9 @@
-// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+// Copyright 2024 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
 
 package agents
 
-import (
-	"errors"
-	"github.com/TeaOSLab/EdgeNode/internal/events"
-	"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
-	"github.com/TeaOSLab/EdgeNode/internal/utils/dbs"
-	"github.com/iwind/TeaGo/Tea"
-	"github.com/iwind/TeaGo/types"
-	"log"
-	"os"
-	"path/filepath"
-	"strings"
-)
-
-const (
-	tableAgentIPs = "agentIPs"
-)
-
-type DB struct {
-	db   *dbs.DB
-	path string
-
-	insertAgentIPStmt *dbs.Stmt
-	listAgentIPsStmt  *dbs.Stmt
-}
-
-func NewDB(path string) *DB {
-	var db = &DB{path: path}
-
-	events.OnClose(func() {
-		_ = db.Close()
-	})
-
-	return db
-}
-
-func (this *DB) Init() error {
-	// 检查目录是否存在
-	var dir = filepath.Dir(this.path)
-
-	_, err := os.Stat(dir)
-	if err != nil {
-		err = os.MkdirAll(dir, 0777)
-		if err != nil {
-			return err
-		}
-		remotelogs.Println("DB", "create database dir '"+dir+"'")
-	}
-
-	// TODO 思考 data.db 的数据安全性
-	db, err := dbs.OpenWriter("file:" + this.path + "?cache=shared&mode=rwc&_journal_mode=WAL&_locking_mode=EXCLUSIVE")
-	if err != nil {
-		return err
-	}
-	db.SetMaxOpenConns(1)
-
-	/**_, err = db.Exec("VACUUM")
-	if err != nil {
-		return err
-	}**/
-
-	_, err = db.Exec(`CREATE TABLE IF NOT EXISTS "` + tableAgentIPs + `" (
-  "id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
-  "ip" varchar(64),
-  "agentCode" varchar(128)
-);`)
-	if err != nil {
-		return err
-	}
-
-	// 预编译语句
-
-	// agent ip record statements
-	this.insertAgentIPStmt, err = db.Prepare(`INSERT INTO "` + tableAgentIPs + `" ("id", "ip", "agentCode") VALUES (?, ?, ?)`)
-	if err != nil {
-		return err
-	}
-
-	this.listAgentIPsStmt, err = db.Prepare(`SELECT "id", "ip", "agentCode" FROM "` + tableAgentIPs + `" ORDER BY "id" ASC LIMIT ? OFFSET ?`)
-	if err != nil {
-		return err
-	}
-
-	this.db = db
-
-	return nil
-}
-
-func (this *DB) InsertAgentIP(ipId int64, ip string, agentCode string) error {
-	if this.db == nil {
-		return errors.New("db should not be nil")
-	}
-
-	_, err := this.insertAgentIPStmt.Exec(ipId, ip, agentCode)
-	if err != nil {
-		// 不提示ID重复错误
-		if strings.Contains(err.Error(), "UNIQUE constraint") {
-			return nil
-		}
-
-		return err
-	}
-
-	return nil
-}
-
-func (this *DB) ListAgentIPs(offset int64, size int64) (agentIPs []*AgentIP, err error) {
-	if this.db == nil {
-		return nil, errors.New("db should not be nil")
-	}
-	rows, err := this.listAgentIPsStmt.Query(size, offset)
-	if err != nil {
-		return nil, err
-	}
-	defer func() {
-		_ = rows.Close()
-	}()
-	for rows.Next() {
-		var agentIP = &AgentIP{}
-		err = rows.Scan(&agentIP.Id, &agentIP.IP, &agentIP.AgentCode)
-		if err != nil {
-			return nil, err
-		}
-		agentIPs = append(agentIPs, agentIP)
-	}
-	return
-}
-
-func (this *DB) Close() error {
-	if this.db == nil {
-		return nil
-	}
-
-	for _, stmt := range []*dbs.Stmt{
-		this.insertAgentIPStmt,
-		this.listAgentIPsStmt,
-	} {
-		if stmt != nil {
-			_ = stmt.Close()
-		}
-	}
-
-	return this.db.Close()
-}
-
-// 打印日志
-func (this *DB) log(args ...any) {
-	if !Tea.IsTesting() {
-		return
-	}
-	if len(args) == 0 {
-		return
-	}
-
-	args[0] = "[" + types.String(args[0]) + "]"
-	log.Println(args...)
+type DB interface {
+	Init() error
+	InsertAgentIP(ipId int64, ip string, agentCode string) error
+	ListAgentIPs(offset int64, size int64) (agentIPs []*AgentIP, err error)
 }
diff --git a/internal/utils/agents/db_kv.go b/internal/utils/agents/db_kv.go
new file mode 100644
index 0000000..ab52971
--- /dev/null
+++ b/internal/utils/agents/db_kv.go
@@ -0,0 +1,93 @@
+// Copyright 2024 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
+
+package agents
+
+import (
+	"errors"
+	"github.com/TeaOSLab/EdgeNode/internal/events"
+	"github.com/TeaOSLab/EdgeNode/internal/utils/kvstore"
+)
+
+type KVDB struct {
+	table   *kvstore.Table[*AgentIP]
+	encoder *AgentIPEncoder[*AgentIP]
+	lastKey string
+}
+
+func NewKVDB() *KVDB {
+	var db = &KVDB{}
+
+	events.OnClose(func() {
+		_ = db.Close()
+	})
+
+	return db
+}
+
+func (this *KVDB) Init() error {
+	store, err := kvstore.DefaultStore()
+	if err != nil {
+		return err
+	}
+
+	db, err := store.NewDB("agents")
+	if err != nil {
+		return err
+	}
+
+	{
+		this.encoder = &AgentIPEncoder[*AgentIP]{}
+		table, tableErr := kvstore.NewTable[*AgentIP]("agent_ips", this.encoder)
+		if tableErr != nil {
+			return tableErr
+		}
+		db.AddTable(table)
+		this.table = table
+	}
+
+	return nil
+}
+
+func (this *KVDB) InsertAgentIP(ipId int64, ip string, agentCode string) error {
+	if this.table == nil {
+		return errors.New("table should not be nil")
+	}
+
+	var item = &AgentIP{
+		Id:        ipId,
+		IP:        ip,
+		AgentCode: agentCode,
+	}
+	var key = this.encoder.EncodeKey(item)
+	return this.table.Set(key, item)
+}
+
+func (this *KVDB) ListAgentIPs(offset int64, size int64) (agentIPs []*AgentIP, err error) {
+	if this.table == nil {
+		return nil, errors.New("table should not be nil")
+	}
+
+	err = this.table.
+		Query().
+		Limit(int(size)).
+		Offset(this.lastKey).
+		FindAll(func(tx *kvstore.Tx[*AgentIP], item kvstore.Item[*AgentIP]) (goNext bool, err error) {
+			this.lastKey = item.Key
+			agentIPs = append(agentIPs, item.Value)
+			return true, nil
+		})
+
+	return
+}
+
+func (this *KVDB) Close() error {
+	return nil
+}
+
+func (this *KVDB) Flush() error {
+	if this.table == nil {
+		return errors.New("table should not be nil")
+	}
+
+	return this.table.DB().Store().Flush()
+}
diff --git a/internal/utils/agents/db_kv_objects.go b/internal/utils/agents/db_kv_objects.go
new file mode 100644
index 0000000..25f263b
--- /dev/null
+++ b/internal/utils/agents/db_kv_objects.go
@@ -0,0 +1,36 @@
+// Copyright 2024 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
+
+package agents
+
+import (
+	"encoding/binary"
+	"encoding/json"
+	"errors"
+)
+
+type AgentIPEncoder[T interface{ *AgentIP }] struct {
+}
+
+func (this *AgentIPEncoder[T]) Encode(value T) ([]byte, error) {
+	return json.Marshal(value)
+}
+
+func (this *AgentIPEncoder[T]) EncodeField(value T, fieldName string) ([]byte, error) {
+	return nil, errors.New("invalid field name '" + fieldName + "'")
+}
+
+func (this *AgentIPEncoder[T]) Decode(valueBytes []byte) (value T, err error) {
+	err = json.Unmarshal(valueBytes, &value)
+	return
+}
+
+// EncodeKey generate key for ip item
+func (this *AgentIPEncoder[T]) EncodeKey(item *AgentIP) string {
+	var b = make([]byte, 8)
+	if item.Id < 0 {
+		item.Id = 0
+	}
+
+	binary.BigEndian.PutUint64(b, uint64(item.Id))
+	return string(b)
+}
diff --git a/internal/utils/agents/db_kv_test.go b/internal/utils/agents/db_kv_test.go
new file mode 100644
index 0000000..446e83a
--- /dev/null
+++ b/internal/utils/agents/db_kv_test.go
@@ -0,0 +1,53 @@
+// Copyright 2024 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
+
+package agents_test
+
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/utils/agents"
+	"strconv"
+	"testing"
+)
+
+func TestKVDB_InsertAgentIP(t *testing.T) {
+	var db = agents.NewKVDB()
+	err := db.Init()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	defer func() {
+		_ = db.Flush()
+	}()
+
+	for i := 1; i <= 5; i++ {
+		err = db.InsertAgentIP(int64(i), "192.168.2."+strconv.Itoa(i), "example")
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+}
+
+func TestKVDB_ListAgentIPs(t *testing.T) {
+	var db = agents.NewKVDB()
+	err := db.Init()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	const count = 10
+
+	for {
+		agentIPs, listErr := db.ListAgentIPs(0, count)
+		if listErr != nil {
+			t.Fatal(listErr)
+		}
+		t.Log("===")
+		for _, agentIP := range agentIPs {
+			t.Logf("%+v", agentIP)
+		}
+
+		if len(agentIPs) < count {
+			break
+		}
+	}
+}
diff --git a/internal/utils/agents/db_sqlite.go b/internal/utils/agents/db_sqlite.go
new file mode 100644
index 0000000..7dc219b
--- /dev/null
+++ b/internal/utils/agents/db_sqlite.go
@@ -0,0 +1,160 @@
+// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package agents
+
+import (
+	"errors"
+	"github.com/TeaOSLab/EdgeNode/internal/events"
+	"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
+	"github.com/TeaOSLab/EdgeNode/internal/utils/dbs"
+	"github.com/iwind/TeaGo/Tea"
+	"github.com/iwind/TeaGo/types"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+const (
+	tableAgentIPs = "agentIPs"
+)
+
+type SQLiteDB struct {
+	db   *dbs.DB
+	path string
+
+	insertAgentIPStmt *dbs.Stmt
+	listAgentIPsStmt  *dbs.Stmt
+}
+
+func NewSQLiteDB(path string) *SQLiteDB {
+	var db = &SQLiteDB{path: path}
+
+	events.OnClose(func() {
+		_ = db.Close()
+	})
+
+	return db
+}
+
+func (this *SQLiteDB) Init() error {
+	// 检查目录是否存在
+	var dir = filepath.Dir(this.path)
+
+	_, err := os.Stat(dir)
+	if err != nil {
+		err = os.MkdirAll(dir, 0777)
+		if err != nil {
+			return err
+		}
+		remotelogs.Println("DB", "create database dir '"+dir+"'")
+	}
+
+	// TODO 思考 data.db 的数据安全性
+	db, err := dbs.OpenWriter("file:" + this.path + "?cache=shared&mode=rwc&_journal_mode=WAL&_locking_mode=EXCLUSIVE")
+	if err != nil {
+		return err
+	}
+	db.SetMaxOpenConns(1)
+
+	/**_, err = db.Exec("VACUUM")
+	if err != nil {
+		return err
+	}**/
+
+	_, err = db.Exec(`CREATE TABLE IF NOT EXISTS "` + tableAgentIPs + `" (
+  "id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
+  "ip" varchar(64),
+  "agentCode" varchar(128)
+);`)
+	if err != nil {
+		return err
+	}
+
+	// 预编译语句
+
+	// agent ip record statements
+	this.insertAgentIPStmt, err = db.Prepare(`INSERT INTO "` + tableAgentIPs + `" ("id", "ip", "agentCode") VALUES (?, ?, ?)`)
+	if err != nil {
+		return err
+	}
+
+	this.listAgentIPsStmt, err = db.Prepare(`SELECT "id", "ip", "agentCode" FROM "` + tableAgentIPs + `" ORDER BY "id" ASC LIMIT ? OFFSET ?`)
+	if err != nil {
+		return err
+	}
+
+	this.db = db
+
+	return nil
+}
+
+func (this *SQLiteDB) InsertAgentIP(ipId int64, ip string, agentCode string) error {
+	if this.db == nil {
+		return errors.New("db should not be nil")
+	}
+
+	_, err := this.insertAgentIPStmt.Exec(ipId, ip, agentCode)
+	if err != nil {
+		// 不提示ID重复错误
+		if strings.Contains(err.Error(), "UNIQUE constraint") {
+			return nil
+		}
+
+		return err
+	}
+
+	return nil
+}
+
+func (this *SQLiteDB) ListAgentIPs(offset int64, size int64) (agentIPs []*AgentIP, err error) {
+	if this.db == nil {
+		return nil, errors.New("db should not be nil")
+	}
+	rows, err := this.listAgentIPsStmt.Query(size, offset)
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		_ = rows.Close()
+	}()
+	for rows.Next() {
+		var agentIP = &AgentIP{}
+		err = rows.Scan(&agentIP.Id, &agentIP.IP, &agentIP.AgentCode)
+		if err != nil {
+			return nil, err
+		}
+		agentIPs = append(agentIPs, agentIP)
+	}
+	return
+}
+
+func (this *SQLiteDB) Close() error {
+	if this.db == nil {
+		return nil
+	}
+
+	for _, stmt := range []*dbs.Stmt{
+		this.insertAgentIPStmt,
+		this.listAgentIPsStmt,
+	} {
+		if stmt != nil {
+			_ = stmt.Close()
+		}
+	}
+
+	return this.db.Close()
+}
+
+// 打印日志
+func (this *SQLiteDB) log(args ...any) {
+	if !Tea.IsTesting() {
+		return
+	}
+	if len(args) == 0 {
+		return
+	}
+
+	args[0] = "[" + types.String(args[0]) + "]"
+	log.Println(args...)
+}
diff --git a/internal/utils/agents/manager.go b/internal/utils/agents/manager.go
index 52a65ce..e669d22 100644
--- a/internal/utils/agents/manager.go
+++ b/internal/utils/agents/manager.go
@@ -10,6 +10,7 @@ import (
 	"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
 	"github.com/TeaOSLab/EdgeNode/internal/rpc"
 	"github.com/iwind/TeaGo/Tea"
+	"os"
 	"sync"
 	"time"
 )
@@ -33,7 +34,7 @@ type Manager struct {
 	ipMap  map[string]string // ip => agentCode
 	locker sync.RWMutex
 
-	db *DB
+	db DB
 
 	lastId int64
 }
@@ -44,7 +45,7 @@ func NewManager() *Manager {
 	}
 }
 
-func (this *Manager) SetDB(db *DB) {
+func (this *Manager) SetDB(db DB) {
 	this.db = db
 }
 
@@ -195,7 +196,14 @@ func (this *Manager) ContainsIP(ip string) bool {
 }
 
 func (this *Manager) loadDB() error {
-	var db = NewDB(Tea.Root + "/data/agents.db")
+	var sqlitePath = Tea.Root + "/data/agents.db"
+	_, sqliteErr := os.Stat(sqlitePath)
+	var db DB
+	if sqliteErr == nil {
+		db = NewSQLiteDB(sqlitePath)
+	} else {
+		db = NewKVDB()
+	}
 	err := db.Init()
 	if err != nil {
 		return err
diff --git a/internal/utils/agents/manager_test.go b/internal/utils/agents/manager_test.go
index 3995260..7164d39 100644
--- a/internal/utils/agents/manager_test.go
+++ b/internal/utils/agents/manager_test.go
@@ -15,7 +15,7 @@ func TestNewManager(t *testing.T) {
 		return
 	}
 
-	var db = agents.NewDB(Tea.Root + "/data/agents.db")
+	var db = agents.NewSQLiteDB(Tea.Root + "/data/agents.db")
 	err := db.Init()
 	if err != nil {
 		t.Fatal(err)
diff --git a/internal/utils/kvstore/store.go b/internal/utils/kvstore/store.go
index 7063c36..6137e0f 100644
--- a/internal/utils/kvstore/store.go
+++ b/internal/utils/kvstore/store.go
@@ -4,6 +4,7 @@ package kvstore
 
 import (
 	"errors"
+	"fmt"
 	"github.com/TeaOSLab/EdgeNode/internal/events"
 	"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
 	fsutils "github.com/TeaOSLab/EdgeNode/internal/utils/fs"
@@ -38,16 +39,16 @@ func NewStore(storeName string) (*Store, error) {
 		return nil, errors.New("invalid store name '" + storeName + "'")
 	}
 
-	var root = Tea.Root + "/data/stores"
-	_, err := os.Stat(root)
+	var path = Tea.Root + "/data/stores/" + storeName + StoreSuffix
+	_, err := os.Stat(path)
 	if err != nil && os.IsNotExist(err) {
-		_ = os.MkdirAll(root, 0777)
+		_ = os.MkdirAll(path, 0777)
 	}
 
 	return &Store{
 		name:   storeName,
-		path:   Tea.Root + "/data/stores/" + storeName + StoreSuffix,
-		locker: fsutils.NewLocker(Tea.Root + "/data/stores/" + storeName + StoreSuffix + "/.fs"),
+		path:   path,
+		locker: fsutils.NewLocker(path + "/.fs"),
 	}, nil
 }
 
@@ -96,21 +97,24 @@ func DefaultStore() (*Store, error) {
 		return defaultSore, nil
 	}
 
+	var resultErr error
 	storeOnce.Do(func() {
 		store, err := NewStore("default")
 		if err != nil {
-			remotelogs.Error("KV", "create default store failed: "+err.Error())
+			resultErr = fmt.Errorf("create default store failed: %w", err)
+			remotelogs.Error("KV", resultErr.Error())
 			return
 		}
 		err = store.Open()
 		if err != nil {
-			remotelogs.Error("KV", "open default store failed: "+err.Error())
+			resultErr = fmt.Errorf("open default store failed: %w", err)
+			remotelogs.Error("KV", resultErr.Error())
 			return
 		}
 		defaultSore = store
 	})
 
-	return defaultSore, nil
+	return defaultSore, resultErr
 }
 
 func (this *Store) Open() error {