diff --git a/sessions/providers/memory/register.go b/sessions/providers/memory/register.go
index cc2c998c..e36fe768 100644
--- a/sessions/providers/memory/register.go
+++ b/sessions/providers/memory/register.go
@@ -21,7 +21,7 @@ var (
 func register() {
 	// the actual work is here.
 	Provider.NewStore = func(sessionId string, cookieLifeDuration time.Duration) store.IStore {
-		return &Store{sid: sessionId, lastAccessedTime: time.Now(), values: make(map[interface{}]interface{}, 0)}
+		return &Store{sid: sessionId, lastAccessedTime: time.Now(), values: make(map[string]interface{}, 0)}
 	}
 	sessions.Register(Provider)
 }
diff --git a/sessions/providers/memory/store.go b/sessions/providers/memory/store.go
index f53adecb..b96835f4 100644
--- a/sessions/providers/memory/store.go
+++ b/sessions/providers/memory/store.go
@@ -1,6 +1,7 @@
 package memory
 
 import (
+	"sync"
 	"time"
 
 	"github.com/kataras/iris/sessions/store"
@@ -10,36 +11,42 @@ import (
 type Store struct {
 	sid              string
 	lastAccessedTime time.Time
-	values           map[interface{}]interface{} // here is the real memory store
+	values           map[string]interface{} // here is the real memory store
+	mu               sync.Mutex
 }
 
 var _ store.IStore = &Store{}
 
 // GetAll returns all values
-func (s *Store) GetAll() map[interface{}]interface{} {
+func (s *Store) GetAll() map[string]interface{} {
+	s.mu.Lock()
+	defer s.mu.Unlock()
 	return s.values
 }
 
 // VisitAll loop each one entry and calls the callback function func(key,value)
-func (s *Store) VisitAll(cb func(k interface{}, v interface{})) {
+func (s *Store) VisitAll(cb func(k string, v interface{})) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
 	for key := range s.values {
 		cb(key, s.values[key])
 	}
 }
 
 // Get returns the value of an entry by its key
-func (s *Store) Get(key interface{}) interface{} {
+func (s *Store) Get(key string) interface{} {
 	Provider.Update(s.sid)
-
+	s.mu.Lock()
 	if value, found := s.values[key]; found {
+		s.mu.Unlock()
 		return value
 	}
-
+	s.mu.Unlock()
 	return nil
 }
 
 // GetString same as Get but returns as string, if nil then returns an empty string
-func (s *Store) GetString(key interface{}) string {
+func (s *Store) GetString(key string) string {
 	if value := s.Get(key); value != nil {
 		if v, ok := value.(string); ok {
 			return v
@@ -51,7 +58,7 @@ func (s *Store) GetString(key interface{}) string {
 }
 
 // GetInt same as Get but returns as int, if nil then returns -1
-func (s *Store) GetInt(key interface{}) int {
+func (s *Store) GetInt(key string) int {
 	if value := s.Get(key); value != nil {
 		if v, ok := value.(int); ok {
 			return v
@@ -63,16 +70,20 @@ func (s *Store) GetInt(key interface{}) int {
 
 // Set fills the session with an entry, it receives a key and a value
 // returns an error, which is always nil
-func (s *Store) Set(key interface{}, value interface{}) error {
+func (s *Store) Set(key string, value interface{}) error {
+	s.mu.Lock()
 	s.values[key] = value
+	s.mu.Unlock()
 	Provider.Update(s.sid)
 	return nil
 }
 
 // Delete removes an entry by its key
 // returns an error, which is always nil
-func (s *Store) Delete(key interface{}) error {
+func (s *Store) Delete(key string) error {
+	s.mu.Lock()
 	delete(s.values, key)
+	s.mu.Unlock()
 	Provider.Update(s.sid)
 	return nil
 }
@@ -80,9 +91,11 @@ func (s *Store) Delete(key interface{}) error {
 // Clear removes all entries
 // returns an error, which is always nil
 func (s *Store) Clear() error {
+	s.mu.Lock()
 	for key := range s.values {
 		delete(s.values, key)
 	}
+	s.mu.Unlock()
 	Provider.Update(s.sid)
 	return nil
 }
@@ -105,7 +118,9 @@ func (s *Store) SetLastAccessedTime(lastacc time.Time) {
 // Destroy
 func (s *Store) Destroy() {
 	// clears without provider's update.
+	s.mu.Lock()
 	for key := range s.values {
 		delete(s.values, key)
 	}
+	s.mu.Unlock()
 }
diff --git a/sessions/providers/redis/redisstore.go b/sessions/providers/redis/redisstore.go
index 1473fd93..fa43213c 100644
--- a/sessions/providers/redis/redisstore.go
+++ b/sessions/providers/redis/redisstore.go
@@ -1,6 +1,7 @@
 package redis
 
 import (
+	"sync"
 	"time"
 
 	"github.com/kataras/iris/sessions/store"
@@ -28,8 +29,8 @@ with the memory provider. Or just have a values field inside the Store and use j
 Ok then, let's convert it again.
 */
 
-// Values is just a type of a map[interface{}]interface{}
-type Values map[interface{}]interface{}
+// Values is just a type of a map[string]interface{}
+type Values map[string]interface{}
 
 // Store the redis session store
 type Store struct {
@@ -37,6 +38,7 @@ type Store struct {
 	lastAccessedTime   time.Time
 	values             Values
 	cookieLifeDuration time.Duration //used on .Set-> SETEX on redis
+	mu                 sync.Mutex
 }
 
 var _ store.IStore = &Store{}
@@ -78,30 +80,35 @@ func (s *Store) update() {
 }
 
 // GetAll returns all values
-func (s *Store) GetAll() map[interface{}]interface{} {
+func (s *Store) GetAll() map[string]interface{} {
+	s.mu.Lock()
+	defer s.mu.Unlock()
 	return s.values
 }
 
 // VisitAll loop each one entry and calls the callback function func(key,value)
-func (s *Store) VisitAll(cb func(k interface{}, v interface{})) {
+func (s *Store) VisitAll(cb func(k string, v interface{})) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
 	for key := range s.values {
 		cb(key, s.values[key])
 	}
 }
 
 // Get returns the value of an entry by its key
-func (s *Store) Get(key interface{}) interface{} {
+func (s *Store) Get(key string) interface{} {
 	Provider.Update(s.sid)
-
+	s.mu.Lock()
 	if value, found := s.values[key]; found {
+		s.mu.Unlock()
 		return value
 	}
-
+	s.mu.Unlock()
 	return nil
 }
 
 // GetString same as Get but returns as string, if nil then returns an empty string
-func (s *Store) GetString(key interface{}) string {
+func (s *Store) GetString(key string) string {
 	if value := s.Get(key); value != nil {
 		if v, ok := value.(string); ok {
 			return v
@@ -112,7 +119,7 @@ func (s *Store) GetString(key interface{}) string {
 }
 
 // GetInt same as Get but returns as int, if nil then returns -1
-func (s *Store) GetInt(key interface{}) int {
+func (s *Store) GetInt(key string) int {
 	if value := s.Get(key); value != nil {
 		if v, ok := value.(int); ok {
 			return v
@@ -124,8 +131,10 @@ func (s *Store) GetInt(key interface{}) int {
 
 // Set fills the session with an entry, it receives a key and a value
 // returns an error, which is always nil
-func (s *Store) Set(key interface{}, value interface{}) error {
+func (s *Store) Set(key string, value interface{}) error {
+	s.mu.Lock()
 	s.values[key] = value
+	s.mu.Unlock()
 	Provider.Update(s.sid)
 
 	s.update()
@@ -134,8 +143,10 @@ func (s *Store) Set(key interface{}, value interface{}) error {
 
 // Delete removes an entry by its key
 // returns an error, which is always nil
-func (s *Store) Delete(key interface{}) error {
+func (s *Store) Delete(key string) error {
+	s.mu.Lock()
 	delete(s.values, key)
+	s.mu.Unlock()
 	Provider.Update(s.sid)
 	s.update()
 	return nil
@@ -145,9 +156,11 @@ func (s *Store) Delete(key interface{}) error {
 // returns an error, which is always nil
 func (s *Store) Clear() error {
 	//we are not using the Redis.Delete, I made so work for nothing.. we wanted only the .Set at the end...
+	s.mu.Lock()
 	for key := range s.values {
 		delete(s.values, key)
 	}
+	s.mu.Unlock()
 
 	Provider.Update(s.sid)
 	s.update()
@@ -173,8 +186,10 @@ func (s *Store) SetLastAccessedTime(lastacc time.Time) {
 func (s *Store) Destroy() {
 	// remove the whole  value which is the s.values from real redis
 	redis.Delete(s.sid)
+	s.mu.Lock()
 	for key := range s.values {
 		delete(s.values, key)
 	}
+	s.mu.Unlock()
 
 }
diff --git a/sessions/store/store.go b/sessions/store/store.go
index 66a65cce..8c22776d 100644
--- a/sessions/store/store.go
+++ b/sessions/store/store.go
@@ -5,14 +5,14 @@ import "time"
 
 // IStore is the interface which all session stores should implement
 type IStore interface {
-	Get(interface{}) interface{}
-	GetString(key interface{}) string
-	GetInt(key interface{}) int
-	Set(interface{}, interface{}) error
-	Delete(interface{}) error
+	Get(string) interface{}
+	GetString(string) string
+	GetInt(string) int
+	Set(string, interface{}) error
+	Delete(string) error
 	Clear() error
-	VisitAll(func(interface{}, interface{}))
-	GetAll() map[interface{}]interface{}
+	VisitAll(func(string, interface{}))
+	GetAll() map[string]interface{}
 	ID() string
 	LastAccessedTime() time.Time
 	SetLastAccessedTime(time.Time)