diff --git a/src/main/java/cc/ryanc/halo/cache/InMemoryCacheStore.java b/src/main/java/cc/ryanc/halo/cache/InMemoryCacheStore.java
index 70cee8c10..fad665b73 100644
--- a/src/main/java/cc/ryanc/halo/cache/InMemoryCacheStore.java
+++ b/src/main/java/cc/ryanc/halo/cache/InMemoryCacheStore.java
@@ -99,9 +99,11 @@ public class InMemoryCacheStore extends StringCacheStore {
 
         @Override
         public void run() {
-            log.trace("Cache clean task is cleaning");
-            cacheContainer.keySet().forEach(InMemoryCacheStore.this::get);
-            log.trace("Cache lean task cleaned");
+            cacheContainer.keySet().forEach(key -> {
+                if (!InMemoryCacheStore.this.get(key).isPresent()) {
+                    log.debug("Deleted the cache: [{}] for expiration", key);
+                }
+            });
         }
     }
 }
diff --git a/src/main/java/cc/ryanc/halo/cache/lock/CacheLockInterceptor.java b/src/main/java/cc/ryanc/halo/cache/lock/CacheLockInterceptor.java
index 6f095a696..158afb6a5 100644
--- a/src/main/java/cc/ryanc/halo/cache/lock/CacheLockInterceptor.java
+++ b/src/main/java/cc/ryanc/halo/cache/lock/CacheLockInterceptor.java
@@ -95,6 +95,8 @@ public class CacheLockInterceptor {
 
         if (StringUtils.isNotBlank(cacheLock.prefix())) {
             cacheKeyBuilder.append(cacheLock.prefix());
+        } else {
+            cacheKeyBuilder.append(methodSignature.getMethod().toString());
         }
 
         // Handle cache lock key building
diff --git a/src/main/java/cc/ryanc/halo/security/context/SecurityContext.java b/src/main/java/cc/ryanc/halo/security/context/SecurityContext.java
index b8a00013b..32d260524 100644
--- a/src/main/java/cc/ryanc/halo/security/context/SecurityContext.java
+++ b/src/main/java/cc/ryanc/halo/security/context/SecurityContext.java
@@ -30,7 +30,7 @@ public interface SecurityContext {
      *
      * @return true if authenticate; false otherwise
      */
-    default boolean isAuthenticate() {
+    default boolean isAuthenticated() {
         return getAuthentication() != null;
     }
 }
diff --git a/src/main/java/cc/ryanc/halo/security/context/SecurityContextHolder.java b/src/main/java/cc/ryanc/halo/security/context/SecurityContextHolder.java
index 310bbd65f..573d22f02 100644
--- a/src/main/java/cc/ryanc/halo/security/context/SecurityContextHolder.java
+++ b/src/main/java/cc/ryanc/halo/security/context/SecurityContextHolder.java
@@ -58,6 +58,6 @@ public class SecurityContextHolder {
      */
     @NonNull
     private static SecurityContext createEmptyContext() {
-        return new SecurityContextImpl();
+        return new SecurityContextImpl(null);
     }
 }
diff --git a/src/main/java/cc/ryanc/halo/service/impl/UserServiceImpl.java b/src/main/java/cc/ryanc/halo/service/impl/UserServiceImpl.java
index 01991ae03..dae3d2dc1 100644
--- a/src/main/java/cc/ryanc/halo/service/impl/UserServiceImpl.java
+++ b/src/main/java/cc/ryanc/halo/service/impl/UserServiceImpl.java
@@ -84,7 +84,7 @@ public class UserServiceImpl extends AbstractCrudService<User, Integer> implemen
         Assert.notNull(httpSession, "Http session must not be null");
 
         // Check login status
-        if (SecurityContextHolder.getContext().isAuthenticate()) {
+        if (SecurityContextHolder.getContext().isAuthenticated()) {
             throw new BadRequestException("You have logged in already, no need to log in again");
         }
 
diff --git a/src/main/java/cc/ryanc/halo/web/controller/admin/api/AdminController.java b/src/main/java/cc/ryanc/halo/web/controller/admin/api/AdminController.java
index 15e944890..36cfee22c 100644
--- a/src/main/java/cc/ryanc/halo/web/controller/admin/api/AdminController.java
+++ b/src/main/java/cc/ryanc/halo/web/controller/admin/api/AdminController.java
@@ -1,13 +1,17 @@
 package cc.ryanc.halo.web.controller.admin.api;
 
 import cc.ryanc.halo.cache.lock.CacheLock;
+import cc.ryanc.halo.exception.BadRequestException;
 import cc.ryanc.halo.model.dto.CountOutputDTO;
 import cc.ryanc.halo.model.dto.UserOutputDTO;
 import cc.ryanc.halo.model.enums.BlogProperties;
 import cc.ryanc.halo.model.enums.PostStatus;
 import cc.ryanc.halo.model.params.LoginParam;
+import cc.ryanc.halo.security.context.SecurityContextHolder;
+import cc.ryanc.halo.security.filter.AdminAuthenticationFilter;
 import cc.ryanc.halo.service.*;
 import io.swagger.annotations.ApiOperation;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.web.bind.annotation.*;
 
 import javax.servlet.http.HttpServletRequest;
@@ -19,6 +23,7 @@ import javax.validation.Valid;
  * @author johnniang
  * @date 3/19/19
  */
+@Slf4j
 @RestController
 @RequestMapping("/admin/api")
 public class AdminController {
@@ -62,4 +67,20 @@ public class AdminController {
     public UserOutputDTO login(@Valid @RequestBody LoginParam loginParam, HttpServletRequest request) {
         return new UserOutputDTO().convertFrom(userService.login(loginParam.getUsername(), loginParam.getPassword(), request.getSession()));
     }
+
+    @PostMapping("logout")
+    @ApiOperation("Logs out (Clear session)")
+    @CacheLock
+    public void logout(HttpServletRequest request) {
+        // Check if the current is logging in
+        boolean authenticated = SecurityContextHolder.getContext().isAuthenticated();
+
+        if (!authenticated) {
+            throw new BadRequestException("You haven't logged in yet, so you can't log out");
+        }
+
+        request.getSession().removeAttribute(AdminAuthenticationFilter.ADMIN_SESSION_KEY);
+
+        log.info("You have been logged out, Welcome to you next time!");
+    }
 }