diff --git a/session/common.go b/session/common.go
index 8ab18c6..d0ca336 100644
--- a/session/common.go
+++ b/session/common.go
@@ -13,7 +13,8 @@ import (
 )
 
 type Authorization struct {
-	Account primitive.ObjectID `bson:"a" json:"a"`
+	Account     primitive.ObjectID `bson:"a" json:"a"`
+	invalidated string
 
 	// by authorization provider
 	Platform string `bson:"p" json:"p"`
@@ -21,9 +22,34 @@ type Authorization struct {
 	Email    string `bson:"em" json:"em"`
 }
 
+func (auth *Authorization) ToStrings() []string {
+	return []string{
+		"a", auth.Account.Hex(),
+		"p", auth.Platform,
+		"u", auth.Uid,
+		"em", auth.Email,
+		"inv", auth.invalidated,
+	}
+}
+
+func (auth *Authorization) Invalidated() bool {
+	return len(auth.invalidated) > 0
+}
+
+func MakeAuthrizationFromStringMap(src map[string]string) Authorization {
+	accid, _ := primitive.ObjectIDFromHex(src["a"])
+	return Authorization{
+		Account:     accid,
+		Platform:    src["p"],
+		Uid:         src["u"],
+		Email:       src["em"],
+		invalidated: src["inv"],
+	}
+}
+
 type Provider interface {
 	New(*Authorization) (string, error)
-	Delete(primitive.ObjectID) error
+	Invalidate(primitive.ObjectID) error
 	Query(string) (Authorization, error)
 	Touch(string) (bool, error)
 }
@@ -31,6 +57,7 @@ type Provider interface {
 type Consumer interface {
 	Query(string) (Authorization, error)
 	Touch(string) (Authorization, error)
+	IsInvalidated(primitive.ObjectID) bool
 	RegisterOnSessionInvalidated(func(primitive.ObjectID))
 }
 
diff --git a/session/consumer_common.go b/session/consumer_common.go
index 770f45c..1932cfe 100644
--- a/session/consumer_common.go
+++ b/session/consumer_common.go
@@ -10,13 +10,13 @@ import (
 
 type cache_stage[T any] struct {
 	cache   map[storagekey]T
-	deleted map[storagekey]bool
+	deleted map[storagekey]T
 }
 
 func make_cache_stage[T any]() *cache_stage[T] {
 	return &cache_stage[T]{
 		cache:   make(map[storagekey]T),
-		deleted: make(map[storagekey]bool),
+		deleted: make(map[storagekey]T),
 	}
 }
 
@@ -39,14 +39,18 @@ func (c *consumer_common[T]) add_internal(sk storagekey, si T) {
 func (c *consumer_common[T]) delete_internal(sk storagekey) (old T) {
 	if v, ok := c.stages[0].cache[sk]; ok {
 		old = v
+		c.stages[0].deleted[sk] = old
+		c.stages[1].deleted[sk] = old
+
 		delete(c.stages[0].cache, sk)
 		delete(c.stages[1].cache, sk)
 	} else if v, ok = c.stages[1].cache[sk]; ok {
 		old = v
+		c.stages[1].deleted[sk] = old
+
 		delete(c.stages[1].cache, sk)
 	}
-	c.stages[0].deleted[sk] = true
-	c.stages[1].deleted[sk] = true
+
 	return
 }
 
diff --git a/session/impl_mongo.go b/session/impl_mongo.go
index 7ced1a0..6823a62 100644
--- a/session/impl_mongo.go
+++ b/session/impl_mongo.go
@@ -64,7 +64,7 @@ func (p *provider_mongo) New(input *Authorization) (string, error) {
 	return string(storagekey_to_publickey(sk)), err
 }
 
-func (p *provider_mongo) Delete(acc primitive.ObjectID) error {
+func (p *provider_mongo) Invalidate(acc primitive.ObjectID) error {
 	_, err := p.mongoClient.Delete(session_collection_name, bson.M{
 		"_id": acc,
 	})
@@ -338,6 +338,11 @@ func (c *consumer_mongo) Touch(pk string) (Authorization, error) {
 	return *si.Auth, nil
 }
 
+func (c *consumer_mongo) IsInvalidated(id primitive.ObjectID) bool {
+	_, ok := c.ids[id]
+	return !ok
+}
+
 func (c *consumer_mongo) add(sk storagekey, id primitive.ObjectID, si *sessionMongo) {
 	c.lock.Lock()
 	defer c.lock.Unlock()
diff --git a/session/impl_redis.go b/session/impl_redis.go
index 8bbe328..cc0b9af 100644
--- a/session/impl_redis.go
+++ b/session/impl_redis.go
@@ -2,7 +2,6 @@ package session
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"time"
 
@@ -43,13 +42,8 @@ func newProviderWithRedis(ctx context.Context, redisUrl string, ttl time.Duratio
 }
 
 func (p *provider_redis) New(input *Authorization) (string, error) {
-	bt, err := json.Marshal(input)
-	if err != nil {
-		return "", err
-	}
-
 	sk := make_storagekey(input.Account)
-	_, err = p.redisClient.SetEX(p.ctx, string(sk), bt, p.ttl).Result()
+	_, err := p.redisClient.HSet(p.ctx, string(sk), input.ToStrings()).Result()
 	if err != nil {
 		return "", err
 	}
@@ -58,7 +52,7 @@ func (p *provider_redis) New(input *Authorization) (string, error) {
 	return string(pk), err
 }
 
-func (p *provider_redis) Delete(account primitive.ObjectID) error {
+func (p *provider_redis) Invalidate(account primitive.ObjectID) error {
 	prefix := account.Hex()
 	sks, err := p.redisClient.Keys(p.ctx, prefix+"*").Result()
 	if err != nil {
@@ -67,7 +61,7 @@ func (p *provider_redis) Delete(account primitive.ObjectID) error {
 	}
 
 	for _, sk := range sks {
-		p.redisClient.Del(p.ctx, sk).Result()
+		p.redisClient.HSet(p.ctx, sk, "inv", "true")
 		p.redisClient.Publish(p.ctx, p.deleteChannel, sk).Result()
 	}
 
@@ -76,7 +70,7 @@ func (p *provider_redis) Delete(account primitive.ObjectID) error {
 
 func (p *provider_redis) Query(pk string) (Authorization, error) {
 	sk := publickey_to_storagekey(publickey(pk))
-	payload, err := p.redisClient.Get(p.ctx, string(sk)).Result()
+	src, err := p.redisClient.HGetAll(p.ctx, string(sk)).Result()
 	if err == redis.Nil {
 		logger.Println("session provider query :", pk, err)
 		return Authorization{}, nil
@@ -85,12 +79,7 @@ func (p *provider_redis) Query(pk string) (Authorization, error) {
 		return Authorization{}, err
 	}
 
-	var auth Authorization
-	if err := json.Unmarshal([]byte(payload), &auth); err != nil {
-		logger.Println("session provider query :", pk, err)
-		return Authorization{}, err
-	}
-
+	auth := MakeAuthrizationFromStringMap(src)
 	return auth, nil
 }
 
@@ -175,13 +164,13 @@ func newConsumerWithRedis(ctx context.Context, redisUrl string, ttl time.Duratio
 	return consumer, nil
 }
 
-func (c *consumer_redis) query_internal(sk storagekey) (*sessionRedis, bool, error) {
-	if _, deleted := c.stages[0].deleted[sk]; deleted {
-		return nil, false, nil
+func (c *consumer_redis) query_internal(sk storagekey) (*sessionRedis, error) {
+	if old, deleted := c.stages[0].deleted[sk]; deleted {
+		return old, nil
 	}
 
-	if _, deleted := c.stages[1].deleted[sk]; deleted {
-		return nil, false, nil
+	if old, deleted := c.stages[1].deleted[sk]; deleted {
+		return old, nil
 	}
 
 	found, ok := c.stages[0].cache[sk]
@@ -192,40 +181,41 @@ func (c *consumer_redis) query_internal(sk storagekey) (*sessionRedis, bool, err
 	if ok {
 		if time.Now().Before(found.expireAt) {
 			// 만료전 세션
-			return found, false, nil
+			return found, nil
 		}
 
 		// 다른 Consumer가 Touch했을 수도 있으므로 redis에서 읽어본다.
 	}
 
-	payload, err := c.redisClient.Get(c.ctx, string(sk)).Result()
+	payload, err := c.redisClient.HGetAll(c.ctx, string(sk)).Result()
 	if err != nil && err != redis.Nil {
 		logger.Println("consumer Query :", err)
-		return nil, false, err
+		return nil, err
 	}
 
 	if len(payload) == 0 {
-		return nil, false, nil
-	}
-
-	var auth Authorization
-	if err := json.Unmarshal([]byte(payload), &auth); err != nil {
-		return nil, false, err
+		return nil, nil
 	}
 
 	ttl, err := c.redisClient.TTL(c.ctx, string(sk)).Result()
 	if err != nil {
 		logger.Println("consumer Query :", err)
-		return nil, false, err
+		return nil, err
 	}
 
+	auth := MakeAuthrizationFromStringMap(payload)
 	si := &sessionRedis{
 		Authorization: &auth,
 		expireAt:      time.Now().Add(ttl),
 	}
-	c.add_internal(sk, si)
 
-	return si, true, nil
+	if auth.Invalidated() {
+		c.stages[0].deleted[sk] = si
+	} else {
+		c.add_internal(sk, si)
+	}
+
+	return si, nil
 }
 
 func (c *consumer_redis) Query(pk string) (Authorization, error) {
@@ -233,7 +223,7 @@ func (c *consumer_redis) Query(pk string) (Authorization, error) {
 	defer c.lock.Unlock()
 
 	sk := publickey_to_storagekey(publickey(pk))
-	si, _, err := c.query_internal(sk)
+	si, err := c.query_internal(sk)
 	if err != nil {
 		logger.Println("session consumer query :", pk, err)
 		return Authorization{}, err
@@ -278,7 +268,7 @@ func (c *consumer_redis) Touch(pk string) (Authorization, error) {
 
 	if ok {
 		// redis에 살아있다.
-		si, added, err := c.query_internal(sk)
+		si, err := c.query_internal(sk)
 		if err != nil {
 			logger.Println("session consumer touch(ok) :", pk, err)
 			return Authorization{}, err
@@ -289,18 +279,29 @@ func (c *consumer_redis) Touch(pk string) (Authorization, error) {
 			return Authorization{}, nil
 		}
 
-		if !added {
-			si.expireAt = time.Now().Add(c.ttl)
-			// stage 0으로 옮기기 위해 add_internal을 다시 부름
-			c.add_internal(sk, si)
-		}
-
 		return *si.Authorization, nil
 	}
 
 	return Authorization{}, nil
 }
 
+func (c *consumer_redis) IsInvalidated(accid primitive.ObjectID) bool {
+	sk := make_storagekey(accid)
+
+	c.lock.Lock()
+	defer c.lock.Unlock()
+
+	if _, deleted := c.stages[0].deleted[sk]; deleted {
+		return true
+	}
+
+	if _, deleted := c.stages[1].deleted[sk]; deleted {
+		return true
+	}
+
+	return false
+}
+
 func (c *consumer_redis) RegisterOnSessionInvalidated(cb func(primitive.ObjectID)) {
 	c.onSessionInvalidated = append(c.onSessionInvalidated, cb)
 }
diff --git a/session/session_test.go b/session/session_test.go
index 23987de..3cc6867 100644
--- a/session/session_test.go
+++ b/session/session_test.go
@@ -75,7 +75,7 @@ func TestExpTable(t *testing.T) {
 	time.Sleep(2 * time.Second)
 
 	time.Sleep(2 * time.Second)
-	pv.Delete(au1.Account)
+	pv.Invalidate(au1.Account)
 
 	cs.Touch(sk1)
 	time.Sleep(2 * time.Second)
diff --git a/wshandler/wshandler.go b/wshandler/wshandler.go
index 887daf0..30e9080 100644
--- a/wshandler/wshandler.go
+++ b/wshandler/wshandler.go
@@ -576,6 +576,11 @@ func (ws *WebsocketHandler) upgrade_nosession(w http.ResponseWriter, r *http.Req
 		return
 	}
 
+	if authinfo.Invalidated() {
+		w.WriteHeader(http.StatusUnauthorized)
+		return
+	}
+
 	var upgrader = websocket.Upgrader{} // use default options
 	conn, err := upgrader.Upgrade(w, r, nil)
 	if err != nil {
@@ -618,6 +623,11 @@ func (ws *WebsocketHandler) upgrade(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if authinfo.Invalidated() {
+		w.WriteHeader(http.StatusUnauthorized)
+		return
+	}
+
 	var upgrader = websocket.Upgrader{} // use default options
 	conn, err := upgrader.Upgrade(w, r, nil)
 	if err != nil {
diff --git a/wshandler/wshandler_peer.go b/wshandler/wshandler_peer.go
index 111a829..942f5ae 100644
--- a/wshandler/wshandler_peer.go
+++ b/wshandler/wshandler_peer.go
@@ -368,6 +368,11 @@ func (ws *websocketPeerHandler[T]) upgrade(w http.ResponseWriter, r *http.Reques
 		return
 	}
 
+	if authinfo.Account.IsZero() || authinfo.Invalidated() {
+		w.WriteHeader(http.StatusUnauthorized)
+		return
+	}
+
 	var upgrader = websocket.Upgrader{} // use default options
 	conn, err := upgrader.Upgrade(w, r, nil)
 	if err != nil {