diff --git a/sdk-component/pom.xml b/sdk-component/pom.xml
index 2dfa33a..b55ff1d 100644
--- a/sdk-component/pom.xml
+++ b/sdk-component/pom.xml
@@ -76,12 +76,14 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
+            <optional>true</optional>
             <version>${log4j.version}</version>
         </dependency>
         <!-- logback -->
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
+            <optional>true</optional>
             <version>${logback.version}</version>
         </dependency>
         <dependency>
diff --git a/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/agent/CapaLog4jAppenderAgent.java b/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/agent/CapaLog4jAppenderAgent.java
index 656311c..1339ff6 100644
--- a/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/agent/CapaLog4jAppenderAgent.java
+++ b/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/agent/CapaLog4jAppenderAgent.java
@@ -21,7 +21,7 @@
  * @Date 2021/11/17 14:16
  */
 
-import group.rxcloud.capa.component.telemetry.log.CapaLog4jAppender;
+import group.rxcloud.capa.component.telemetry.log.appender.CapaLog4jAppender;
 import group.rxcloud.capa.infrastructure.config.CapaProperties;
 import org.apache.logging.log4j.core.Appender;
 import org.apache.logging.log4j.core.Filter;
diff --git a/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/agent/CapaLogbackAppenderAgent.java b/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/agent/CapaLogbackAppenderAgent.java
index 0eb32ef..8e97a2e 100644
--- a/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/agent/CapaLogbackAppenderAgent.java
+++ b/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/agent/CapaLogbackAppenderAgent.java
@@ -17,7 +17,7 @@
 package group.rxcloud.capa.component.telemetry.log.agent;
 
 import ch.qos.logback.core.UnsynchronizedAppenderBase;
-import group.rxcloud.capa.component.telemetry.log.CapaLogbackAppender;
+import group.rxcloud.capa.component.telemetry.log.appender.CapaLogbackAppender;
 import group.rxcloud.capa.infrastructure.config.CapaProperties;
 
 import java.lang.reflect.Constructor;
diff --git a/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/CapaLog4jAppender.java b/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/appender/CapaLog4jAppender.java
similarity index 79%
rename from sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/CapaLog4jAppender.java
rename to sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/appender/CapaLog4jAppender.java
index 1716505..1ce66f3 100644
--- a/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/CapaLog4jAppender.java
+++ b/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/appender/CapaLog4jAppender.java
@@ -14,20 +14,19 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package group.rxcloud.capa.component.telemetry.log;
-
+package group.rxcloud.capa.component.telemetry.log.appender;
 
 import org.apache.logging.log4j.core.LogEvent;
 
 /**
- * The interface of the log4j appender impl.Implement this and provide your specific impl.
+ * The abstract api of the log4j appender impl.Implement this and provide your specific impl.
  */
-public interface CapaLog4jAppender {
+public abstract class CapaLog4jAppender {
 
     /**
      * Deal with the log.
      *
      * @param event The log event.
      */
-    void appendLog(LogEvent event);
+   public abstract void appendLog(LogEvent event);
 }
diff --git a/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/CapaLogbackAppender.java b/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/appender/CapaLogbackAppender.java
similarity index 77%
rename from sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/CapaLogbackAppender.java
rename to sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/appender/CapaLogbackAppender.java
index 869b72d..45b8963 100644
--- a/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/CapaLogbackAppender.java
+++ b/sdk-component/src/main/java/group/rxcloud/capa/component/telemetry/log/appender/CapaLogbackAppender.java
@@ -14,18 +14,18 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package group.rxcloud.capa.component.telemetry.log;
+package group.rxcloud.capa.component.telemetry.log.appender;
 
 
 /**
- * The interface of the logback appender impl.Implement this and provide your specific impl.
+ * The abstract api of the logback appender impl.Implement this and provide your specific impl.
  */
-public interface CapaLogbackAppender<EVENT> {
+public abstract class CapaLogbackAppender<EVENT> {
 
     /**
      * Deal with the log.
      *
      * @param event The log event.
      */
-    void appendLog(EVENT event);
+    public abstract void appendLog(EVENT event);
 }
diff --git a/sdk-spi-demo/src/main/java/group/rxcloud/capa/spi/demo/log/DemoLog4jAppender.java b/sdk-spi-demo/src/main/java/group/rxcloud/capa/spi/demo/telemetry/log/DemoLog4jAppender.java
similarity index 84%
rename from sdk-spi-demo/src/main/java/group/rxcloud/capa/spi/demo/log/DemoLog4jAppender.java
rename to sdk-spi-demo/src/main/java/group/rxcloud/capa/spi/demo/telemetry/log/DemoLog4jAppender.java
index 24babde..80e8ab4 100644
--- a/sdk-spi-demo/src/main/java/group/rxcloud/capa/spi/demo/log/DemoLog4jAppender.java
+++ b/sdk-spi-demo/src/main/java/group/rxcloud/capa/spi/demo/telemetry/log/DemoLog4jAppender.java
@@ -14,13 +14,13 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package group.rxcloud.capa.spi.demo.log;
+package group.rxcloud.capa.spi.demo.telemetry.log;
 
-import group.rxcloud.capa.component.telemetry.log.CapaLog4jAppender;
+import group.rxcloud.capa.component.telemetry.log.appender.CapaLog4jAppender;
 import org.apache.logging.log4j.core.LogEvent;
 
 
-public class DemoLog4jAppender implements CapaLog4jAppender {
+public class DemoLog4jAppender extends CapaLog4jAppender {
 
     @Override
     public void appendLog(LogEvent event) {
diff --git a/sdk-spi-demo/src/main/java/group/rxcloud/capa/spi/demo/log/DemoLogbackAppender.java b/sdk-spi-demo/src/main/java/group/rxcloud/capa/spi/demo/telemetry/log/DemoLogbackAppender.java
similarity index 83%
rename from sdk-spi-demo/src/main/java/group/rxcloud/capa/spi/demo/log/DemoLogbackAppender.java
rename to sdk-spi-demo/src/main/java/group/rxcloud/capa/spi/demo/telemetry/log/DemoLogbackAppender.java
index 371db21..ad7c3a2 100644
--- a/sdk-spi-demo/src/main/java/group/rxcloud/capa/spi/demo/log/DemoLogbackAppender.java
+++ b/sdk-spi-demo/src/main/java/group/rxcloud/capa/spi/demo/telemetry/log/DemoLogbackAppender.java
@@ -14,12 +14,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package group.rxcloud.capa.spi.demo.log;
+package group.rxcloud.capa.spi.demo.telemetry.log;
 
 import ch.qos.logback.classic.spi.ILoggingEvent;
-import group.rxcloud.capa.component.telemetry.log.CapaLogbackAppender;
+import group.rxcloud.capa.component.telemetry.log.appender.CapaLogbackAppender;
 
-public class DemoLogbackAppender implements CapaLogbackAppender<ILoggingEvent> {
+public class DemoLogbackAppender extends CapaLogbackAppender<ILoggingEvent> {
 
     public DemoLogbackAppender() {
     }
diff --git a/sdk-spi-demo/src/main/resources/capa-component-log.properties b/sdk-spi-demo/src/main/resources/capa-component-log.properties
index e417dcd..cdf5815 100644
--- a/sdk-spi-demo/src/main/resources/capa-component-log.properties
+++ b/sdk-spi-demo/src/main/resources/capa-component-log.properties
@@ -1,2 +1,2 @@
-group.rxcloud.capa.component.telemetry.log.CapaLog4jAppender=group.rxcloud.capa.spi.demo.log.DemoLog4jAppender
-group.rxcloud.capa.component.telemetry.log.CapaLogbackAppender=group.rxcloud.capa.spi.demo.log.DemoLogbackAppender
\ No newline at end of file
+group.rxcloud.capa.component.telemetry.log.appender.CapaLog4jAppender=group.rxcloud.capa.spi.demo.telemetry.log.DemoLog4jAppender
+group.rxcloud.capa.component.telemetry.log.appender.CapaLogbackAppender=group.rxcloud.capa.spi.demo.telemetry.log.DemoLogbackAppender
\ No newline at end of file