diff --git a/build.gradle b/build.gradle
index 9a75289cb..2f7ef8ea3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 plugins {
-    id 'org.springframework.boot' version '2.2.0.RELEASE'
+    id 'org.springframework.boot' version '2.2.1.RELEASE'
     id "io.freefair.lombok" version "3.6.6"
 //    id 'war'
     id 'java'
diff --git a/src/main/java/run/halo/app/config/HaloConfiguration.java b/src/main/java/run/halo/app/config/HaloConfiguration.java
index 216e12bdf..b3fbe2536 100644
--- a/src/main/java/run/halo/app/config/HaloConfiguration.java
+++ b/src/main/java/run/halo/app/config/HaloConfiguration.java
@@ -30,7 +30,6 @@ import run.halo.app.utils.HttpClientUtils;
 import java.security.KeyManagementException;
 import java.security.KeyStoreException;
 import java.security.NoSuchAlgorithmException;
-import java.time.temporal.ChronoUnit;
 
 /**
  * Halo configuration.
@@ -165,7 +164,7 @@ public class HaloConfiguration {
 
         FilterRegistrationBean<AdminAuthenticationFilter> authenticationFilter = new FilterRegistrationBean<>();
         authenticationFilter.setFilter(adminAuthenticationFilter);
-        authenticationFilter.addUrlPatterns("/api/admin/*", "/api/content/comments");
+        authenticationFilter.addUrlPatterns("/api/admin/*", "/actuator/*", "/api/content/comments");
         authenticationFilter.setOrder(1);
 
         return authenticationFilter;
diff --git a/src/main/java/run/halo/app/model/properties/PrimaryProperties.java b/src/main/java/run/halo/app/model/properties/PrimaryProperties.java
index 959f5fab4..f3472a402 100644
--- a/src/main/java/run/halo/app/model/properties/PrimaryProperties.java
+++ b/src/main/java/run/halo/app/model/properties/PrimaryProperties.java
@@ -10,11 +10,25 @@ import static run.halo.app.model.support.HaloConst.DEFAULT_THEME_ID;
  */
 public enum PrimaryProperties implements PropertyEnum {
 
+    /**
+     * is blog installed.
+     */
     IS_INSTALLED("is_installed", Boolean.class, "false"),
 
+    /**
+     * current actived theme.
+     */
     THEME("theme", String.class, DEFAULT_THEME_ID),
 
-    BIRTHDAY("birthday", Long.class, "");
+    /**
+     * blog birthday
+     */
+    BIRTHDAY("birthday", Long.class, ""),
+
+    /**
+     * developer mode.
+     */
+    DEV_MODE("developer_mode", Boolean.class, "false");
 
     private final String value;
 
diff --git a/src/main/resources/application-dev.yaml b/src/main/resources/application-dev.yaml
index 8f731ed68..e3083a8e9 100755
--- a/src/main/resources/application-dev.yaml
+++ b/src/main/resources/application-dev.yaml
@@ -42,6 +42,11 @@ spring:
       max-request-size: 10240MB
   cache:
     type: none
+management:
+  endpoints:
+    web:
+      exposure:
+        include: ['httptrace', 'metrics','env']
 logging:
   level:
     run.halo.app: DEBUG
diff --git a/src/main/resources/application-test.yaml b/src/main/resources/application-test.yaml
index b349fbc00..9f9b88abc 100755
--- a/src/main/resources/application-test.yaml
+++ b/src/main/resources/application-test.yaml
@@ -41,6 +41,11 @@ spring:
       max-request-size: 10MB
   cache:
     type: none
+management:
+  endpoints:
+    web:
+      exposure:
+        include: ['httptrace', 'metrics','env']
 logging:
   level:
     run.halo.app: DEBUG
diff --git a/src/main/resources/application.yaml b/src/main/resources/application.yaml
index 6086fbdd3..8fe446bf3 100755
--- a/src/main/resources/application.yaml
+++ b/src/main/resources/application.yaml
@@ -42,6 +42,11 @@ spring:
     multipart:
       max-file-size: 10240MB
       max-request-size: 10240MB
+management:
+  endpoints:
+    web:
+      exposure:
+        include: ['httptrace', 'metrics','env']
 logging:
   level:
     run.halo.app: INFO