diff --git a/src/main/java/com/serliunx/ddns/ManagerLite.java b/src/main/java/com/serliunx/ddns/ManagerLite.java
index aa90b11..44ac3e7 100644
--- a/src/main/java/com/serliunx/ddns/ManagerLite.java
+++ b/src/main/java/com/serliunx/ddns/ManagerLite.java
@@ -18,13 +18,13 @@ public final class ManagerLite {
         init();
     }
 
-    private static SystemInitializer init() {
+    private static void init() {
         SystemInitializer systemInitializer = SystemInitializer
                 .configurer()
+                .clearCache(false)
                 .configuration(new PropertiesConfiguration(SystemConstants.USER_SETTINGS_PROPERTIES_PATH))
                 .instanceContext(new FileInstanceContext())
                 .done();
         systemInitializer.refresh();
-        return systemInitializer;
     }
 }
diff --git a/src/main/java/com/serliunx/ddns/support/feign/client/IPAddressClient.java b/src/main/java/com/serliunx/ddns/client/IPAddressClient.java
similarity index 86%
rename from src/main/java/com/serliunx/ddns/support/feign/client/IPAddressClient.java
rename to src/main/java/com/serliunx/ddns/client/IPAddressClient.java
index 94e8478..ca86d48 100644
--- a/src/main/java/com/serliunx/ddns/support/feign/client/IPAddressClient.java
+++ b/src/main/java/com/serliunx/ddns/client/IPAddressClient.java
@@ -1,8 +1,8 @@
-package com.serliunx.ddns.support.feign.client;
+package com.serliunx.ddns.client;
 
+import com.serliunx.ddns.client.entity.IPAddressResponse;
 import com.serliunx.ddns.support.feign.JacksonDecoder;
 import com.serliunx.ddns.support.feign.JacksonEncoder;
-import com.serliunx.ddns.support.feign.client.entity.IPAddressResponse;
 import feign.Feign;
 import feign.Logger;
 import feign.RequestLine;
@@ -27,7 +27,7 @@ public interface IPAddressClient {
      * @return IPAddressResponse
      */
     @RequestLine("GET /json")
-    IPAddressResponse getIPAddress();
+	IPAddressResponse getIPAddress();
 
     static IPAddressClient getInstance() {
         return Feign.builder()
diff --git a/src/main/java/com/serliunx/ddns/support/feign/client/entity/IPAddressResponse.java b/src/main/java/com/serliunx/ddns/client/entity/IPAddressResponse.java
similarity index 98%
rename from src/main/java/com/serliunx/ddns/support/feign/client/entity/IPAddressResponse.java
rename to src/main/java/com/serliunx/ddns/client/entity/IPAddressResponse.java
index 2df2b8e..fcd3d67 100644
--- a/src/main/java/com/serliunx/ddns/support/feign/client/entity/IPAddressResponse.java
+++ b/src/main/java/com/serliunx/ddns/client/entity/IPAddressResponse.java
@@ -1,4 +1,4 @@
-package com.serliunx.ddns.support.feign.client.entity;
+package com.serliunx.ddns.client.entity;
 
 /**
  * IP地址查询响应
diff --git a/src/main/java/com/serliunx/ddns/constant/InstanceClasses.java b/src/main/java/com/serliunx/ddns/constant/InstanceClasses.java
index 50f04a6..dc482ae 100644
--- a/src/main/java/com/serliunx/ddns/constant/InstanceClasses.java
+++ b/src/main/java/com/serliunx/ddns/constant/InstanceClasses.java
@@ -14,15 +14,15 @@ import java.util.Map;
  * @since 2024/5/15
  */
 public final class InstanceClasses {
+
     private InstanceClasses(){throw new UnsupportedOperationException();}
 
-    private static final Map<InstanceType, Class<? extends Instance>> instanceTypeMap =
-            new HashMap<InstanceType, Class<? extends Instance>>() {
-                {
-                    put(InstanceType.ALI_YUN, AliyunInstance.class);
-                    put(InstanceType.TENCENT_CLOUD, TencentInstance.class);
-                }
-            };
+    private static final Map<InstanceType, Class<? extends Instance>> instanceTypeMap = new HashMap<>();
+
+    static {
+        instanceTypeMap.put(InstanceType.ALI_YUN, AliyunInstance.class);
+        instanceTypeMap.put(InstanceType.TENCENT_CLOUD, TencentInstance.class);
+    }
 
     public static Class<? extends Instance> match(InstanceType type) {
         return instanceTypeMap.get(type);
diff --git a/src/main/java/com/serliunx/ddns/core/context/AbstractInstanceContext.java b/src/main/java/com/serliunx/ddns/core/context/AbstractInstanceContext.java
index e1bce03..cdd3605 100644
--- a/src/main/java/com/serliunx/ddns/core/context/AbstractInstanceContext.java
+++ b/src/main/java/com/serliunx/ddns/core/context/AbstractInstanceContext.java
@@ -25,7 +25,7 @@ import static com.serliunx.ddns.util.InstanceUtils.validateInstance;
  */
 public abstract class AbstractInstanceContext implements InstanceContext, MultipleSourceInstanceContext {
 
-    private static final Logger log = LoggerFactory.getLogger(AbstractInstanceContext.class);
+    private final Logger log = LoggerFactory.getLogger(this.getClass());
 
     private final Set<ListableInstanceFactory> listableInstanceFactories = new HashSet<>();
 
@@ -63,9 +63,7 @@ public abstract class AbstractInstanceContext implements InstanceContext, Multip
             Set<Instance> instances = new HashSet<>();
 
             // 高优先级的实例工厂会覆盖低优先级实例工厂所加载的实例
-            listableInstanceFactories.stream()
-                    .sorted()
-                    .forEach(f -> instances.addAll(f.getInstances()));
+            getSortedListableInstanceFactories().forEach(f -> instances.addAll(f.getInstances()));
 
             // 初次载入
             cacheInstanceMap = new HashMap<>(instances.stream().collect(Collectors.toMap(Instance::getName, i -> i)));
@@ -86,10 +84,11 @@ public abstract class AbstractInstanceContext implements InstanceContext, Multip
             instanceLock.lock();
             String name = instance.getName();
             Instance instanceExists = instanceMap.get(name);
-            if (instanceExists != null)
+            if (instanceExists != null) {
                 throw new InstanceExistsException("该实例已存在!", name, instanceExists);
-            else
+            } else {
                 instanceMap.put(name, instance);
+            }
         }catch (Exception e){
             throw new RuntimeException(e);
         }finally {
@@ -146,7 +145,7 @@ public abstract class AbstractInstanceContext implements InstanceContext, Multip
     protected void clearCache() {
         if (cacheInstanceMap != null
                 && !cacheInstanceMap.isEmpty()){
-            int size = cacheInstanceMap.size();
+            final int size = cacheInstanceMap.size();
             cacheInstanceMap.clear();
             // 清理实例工厂的缓存信息
             listableInstanceFactories.forEach(Clearable::clear);
diff --git a/src/main/java/com/serliunx/ddns/core/context/MultipleSourceInstanceContext.java b/src/main/java/com/serliunx/ddns/core/context/MultipleSourceInstanceContext.java
index a739270..6428fb4 100644
--- a/src/main/java/com/serliunx/ddns/core/context/MultipleSourceInstanceContext.java
+++ b/src/main/java/com/serliunx/ddns/core/context/MultipleSourceInstanceContext.java
@@ -3,7 +3,10 @@ package com.serliunx.ddns.core.context;
 import com.serliunx.ddns.core.factory.InstanceFactory;
 import com.serliunx.ddns.core.factory.ListableInstanceFactory;
 
+import java.util.Collections;
+import java.util.List;
 import java.util.Set;
+import java.util.stream.Collectors;
 
 /**
  * 多数据源的实例容器, 将多种实例来源汇聚到一起
@@ -26,4 +29,18 @@ public interface MultipleSourceInstanceContext extends InstanceContext, Listable
      * @return 实例工厂列表
      */
     Set<ListableInstanceFactory> getListableInstanceFactories();
+
+    /**
+     * 获取当前实例容器下所有实例工厂(已排序)
+     * @return 已排序的实例工厂
+     */
+    default List<ListableInstanceFactory> getSortedListableInstanceFactories() {
+        Set<ListableInstanceFactory> listableInstanceFactories = getListableInstanceFactories();
+        if (listableInstanceFactories == null || listableInstanceFactories.isEmpty())
+            return Collections.emptyList();
+
+        return listableInstanceFactories.stream()
+                .sorted()
+                .collect(Collectors.toList());
+    }
 }
diff --git a/src/main/java/com/serliunx/ddns/core/factory/AbstractInstanceFactory.java b/src/main/java/com/serliunx/ddns/core/factory/AbstractInstanceFactory.java
index 46ed7ea..365a264 100644
--- a/src/main/java/com/serliunx/ddns/core/factory/AbstractInstanceFactory.java
+++ b/src/main/java/com/serliunx/ddns/core/factory/AbstractInstanceFactory.java
@@ -74,6 +74,11 @@ public abstract class AbstractInstanceFactory implements InstanceFactory, Listab
             clear0();
     }
 
+    @Override
+    public String toString() {
+        return getClass().getSimpleName() + "(priority: " + getPriority() + ")";
+    }
+
     /**
      * 交由子类去加载实例信息
      * @return 实例信息
diff --git a/src/main/java/com/serliunx/ddns/core/factory/FileInstanceFactory.java b/src/main/java/com/serliunx/ddns/core/factory/FileInstanceFactory.java
index 44043b2..e5bd733 100644
--- a/src/main/java/com/serliunx/ddns/core/factory/FileInstanceFactory.java
+++ b/src/main/java/com/serliunx/ddns/core/factory/FileInstanceFactory.java
@@ -26,6 +26,16 @@ public abstract class FileInstanceFactory extends AbstractInstanceFactory {
         this.instanceDir = instanceDir;
     }
 
+    @Override
+    public int getPriority() {
+        return 256;
+    }
+
+    @Override
+    public String toString() {
+        return getClass().getSimpleName() + "(instanceDir: " + instanceDir + ", priority: " + getPriority() + ")";
+    }
+
     @Override
     protected Set<Instance> load() {
         Set<File> files = loadFiles();
@@ -38,11 +48,6 @@ public abstract class FileInstanceFactory extends AbstractInstanceFactory {
         return Collections.emptySet();
     }
 
-    @Override
-    public int getPriority() {
-        return 256;
-    }
-
     /**
      * 交由具体的子类去加载实例, 比如: json格式的实例信息、xml格式的实例信息
      * @param file 文件信息
diff --git a/src/main/java/com/serliunx/ddns/core/factory/YamlFileInstanceFactory.java b/src/main/java/com/serliunx/ddns/core/factory/YamlFileInstanceFactory.java
index 4049354..ac55d30 100644
--- a/src/main/java/com/serliunx/ddns/core/factory/YamlFileInstanceFactory.java
+++ b/src/main/java/com/serliunx/ddns/core/factory/YamlFileInstanceFactory.java
@@ -96,12 +96,14 @@ public class YamlFileInstanceFactory extends FileInstanceFactory {
                     f.set(instance, Enum.valueOf((Class<? extends Enum>) clazz, (String) value));
                     continue;
                 }
-                if (value != null)
+                if (value != null) {
                     f.set(instance, value);
+                }
             } catch (IllegalAccessException e) {
                 throw new RuntimeException(e);
+            } finally {
+                f.setAccessible(false);
             }
-            f.setAccessible(false);
         }
         return instance;
     }
diff --git a/src/main/java/com/serliunx/ddns/core/instance/AbstractInstance.java b/src/main/java/com/serliunx/ddns/core/instance/AbstractInstance.java
index 93c861c..f1829f8 100644
--- a/src/main/java/com/serliunx/ddns/core/instance/AbstractInstance.java
+++ b/src/main/java/com/serliunx/ddns/core/instance/AbstractInstance.java
@@ -23,7 +23,7 @@ import static com.serliunx.ddns.constant.SystemConstants.XML_ROOT_INSTANCE_NAME;
 @JacksonXmlRootElement(localName = XML_ROOT_INSTANCE_NAME)
 public abstract class AbstractInstance implements Instance {
 
-    private static final Logger log = LoggerFactory.getLogger(AbstractInstance.class);
+    private final Logger log = LoggerFactory.getLogger(this.getClass());
 
     /**
      * 实例名称
diff --git a/src/main/java/com/serliunx/ddns/support/Configurer.java b/src/main/java/com/serliunx/ddns/support/Configurer.java
index 7fe6ce1..11ccc63 100644
--- a/src/main/java/com/serliunx/ddns/support/Configurer.java
+++ b/src/main/java/com/serliunx/ddns/support/Configurer.java
@@ -14,6 +14,7 @@ public final class Configurer {
 
     private Configuration configuration;
     private MultipleSourceInstanceContext instanceContext;
+    private boolean clearCache;
 
     Configurer(){}
 
@@ -29,8 +30,13 @@ public final class Configurer {
         return this;
     }
 
+    public Configurer clearCache(boolean clearCache) {
+        this.clearCache = clearCache;
+        return this;
+    }
+
     public SystemInitializer done() {
         Assert.notNull(configuration, instanceContext);
-        return new SystemInitializer(configuration, instanceContext);
+        return new SystemInitializer(configuration, instanceContext, clearCache);
     }
 }
diff --git a/src/main/java/com/serliunx/ddns/support/NetworkContextHolder.java b/src/main/java/com/serliunx/ddns/support/NetworkContextHolder.java
index baa6ca0..a7ca1b1 100644
--- a/src/main/java/com/serliunx/ddns/support/NetworkContextHolder.java
+++ b/src/main/java/com/serliunx/ddns/support/NetworkContextHolder.java
@@ -39,8 +39,9 @@ public final class NetworkContextHolder {
     }
 
     public static String getIpAddress() {
-        if(IP_ADDRESS != null)
+        if(IP_ADDRESS != null) {
             return IP_ADDRESS;
+        }
         try {
             if(!IP_CONTEXT_WAIT_LATCH.await(IP_CONTEXT_TIME_OUT, TimeUnit.SECONDS)) {
                 log.error("IP地址获取超时.");
diff --git a/src/main/java/com/serliunx/ddns/support/SystemInitializer.java b/src/main/java/com/serliunx/ddns/support/SystemInitializer.java
index fc993eb..23bac2d 100644
--- a/src/main/java/com/serliunx/ddns/support/SystemInitializer.java
+++ b/src/main/java/com/serliunx/ddns/support/SystemInitializer.java
@@ -6,8 +6,8 @@ import com.serliunx.ddns.core.Clearable;
 import com.serliunx.ddns.core.Refreshable;
 import com.serliunx.ddns.core.context.MultipleSourceInstanceContext;
 import com.serliunx.ddns.core.instance.Instance;
-import com.serliunx.ddns.support.feign.client.IPAddressClient;
-import com.serliunx.ddns.support.feign.client.entity.IPAddressResponse;
+import com.serliunx.ddns.client.IPAddressClient;
+import com.serliunx.ddns.client.entity.IPAddressResponse;
 import com.serliunx.ddns.thread.TaskThreadFactory;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -40,14 +40,20 @@ public final class SystemInitializer implements Refreshable, Clearable {
 
     private final Configuration configuration;
     private final MultipleSourceInstanceContext instanceContext;
+    private final boolean clearCache;
 
     private ScheduledThreadPoolExecutor scheduledThreadPoolExecutor;
     private Set<Instance> instances;
     private final Map<String, ScheduledFuture<?>> runningInstances = new HashMap<>(64);
 
-    SystemInitializer(Configuration configuration, MultipleSourceInstanceContext instanceContext) {
+    SystemInitializer(Configuration configuration, MultipleSourceInstanceContext instanceContext, boolean clearCache) {
         this.configuration = configuration;
         this.instanceContext = instanceContext;
+        this.clearCache = clearCache;
+    }
+
+    SystemInitializer(Configuration configuration, MultipleSourceInstanceContext instanceContext) {
+        this(configuration, instanceContext, true);
     }
 
     public static Configurer configurer() {
@@ -80,8 +86,10 @@ public final class SystemInitializer implements Refreshable, Clearable {
         // 运行实例
         runInstances();
 
-        // 实例提交后, 清理实例、配置缓存, 因为读取一次就不需要了
-        clear();
+        // 清理实例、配置缓存, 正常情况下读取一次就不需要了
+        if (clearCache) {
+            clear();
+        }
         log.info("初始化完成!");
         InstanceContextHolder.clearAdditional();
     }
@@ -120,8 +128,9 @@ public final class SystemInitializer implements Refreshable, Clearable {
             byte[] buffer = new byte[1024];
             int bytesRead;
             if (inputStream != null) {
-                while ((bytesRead = inputStream.read(buffer)) != -1)
+                while ((bytesRead = inputStream.read(buffer)) != -1) {
                     outputStream.write(buffer, 0, bytesRead);
+                }
             }
             outputStream.close();
         } catch (Exception e) {
@@ -140,7 +149,7 @@ public final class SystemInitializer implements Refreshable, Clearable {
             }
             // 初始化实例
             i.refresh();
-            ScheduledFuture<?> future = scheduledThreadPoolExecutor.scheduleWithFixedDelay(i, 0,
+            ScheduledFuture<?> future = scheduledThreadPoolExecutor.scheduleWithFixedDelay(i, 5,
                     i.getInterval(), TimeUnit.SECONDS);
             runningInstances.put(i.getName(), future);
             log.info("{}({})已启动, 运行周期 {} 秒.", i.getName(), i.getType(), i.getInterval());
@@ -187,15 +196,15 @@ public final class SystemInitializer implements Refreshable, Clearable {
 			boolean result = scheduledThreadPoolExecutor.awaitTermination(5, TimeUnit.SECONDS);
             if (result) {
                 log.error("线程池无法在正常的时间范围内关闭, 将强制关闭线程池!");
-                if (!scheduledThreadPoolExecutor.isShutdown())
+                if (!scheduledThreadPoolExecutor.isShutdown()) {
                     scheduledThreadPoolExecutor.shutdownNow();
+                }
             }
 		} catch (InterruptedException e) {
 			throw new RuntimeException(e);
-		}
-
-        instances.clear();
-
-        runningInstances.clear();
+		} finally {
+            instances.clear();
+            runningInstances.clear();
+        }
 	}
 }
diff --git a/src/test/java/com/serliunx/ddns/test/ContextTest.java b/src/test/java/com/serliunx/ddns/test/ContextTest.java
index 87d5f97..850993c 100644
--- a/src/test/java/com/serliunx/ddns/test/ContextTest.java
+++ b/src/test/java/com/serliunx/ddns/test/ContextTest.java
@@ -34,9 +34,8 @@ public class ContextTest {
 
     @Test
     public void testFileContext(){
-        MultipleSourceInstanceContext context = new FileInstanceContext();
-
-        context.getInstances().forEach(System.out::println);
+        FileInstanceContext context = new FileInstanceContext();
+        context.getSortedListableInstanceFactories().forEach(System.out::println);
     }
 
     @Test
diff --git a/src/test/java/com/serliunx/ddns/test/FactoryTest.java b/src/test/java/com/serliunx/ddns/test/FactoryTest.java
index f53bec9..353778a 100644
--- a/src/test/java/com/serliunx/ddns/test/FactoryTest.java
+++ b/src/test/java/com/serliunx/ddns/test/FactoryTest.java
@@ -1,9 +1,15 @@
 package com.serliunx.ddns.test;
 
+import com.serliunx.ddns.constant.InstanceType;
 import com.serliunx.ddns.constant.SystemConstants;
+import com.serliunx.ddns.core.factory.InstanceFactory;
+import com.serliunx.ddns.core.factory.ListableInstanceFactory;
 import com.serliunx.ddns.core.factory.YamlFileInstanceFactory;
+import com.serliunx.ddns.core.instance.Instance;
 import org.junit.Test;
 
+import java.util.Map;
+
 /**
  * @author SerLiunx
  * @since 1.0
@@ -12,9 +18,14 @@ public class FactoryTest {
 
     @Test
     public void testYamlFileFactory() {
-        YamlFileInstanceFactory factory = new YamlFileInstanceFactory(SystemConstants.USER_INSTANCE_DIR);
+        ListableInstanceFactory factory = new YamlFileInstanceFactory(SystemConstants.USER_INSTANCE_DIR);
         factory.refresh();
         factory.getInstances().forEach(System.out::println);
-        factory.clear();
+
+        Map<String, Instance> instances = factory.getInstanceOfType(InstanceType.TENCENT_CLOUD);
+
+        instances.forEach((k, v) -> {
+            System.out.println(k + ": " + v);
+        });
     }
 }
diff --git a/src/test/java/com/serliunx/ddns/test/support/ClientTest.java b/src/test/java/com/serliunx/ddns/test/support/ClientTest.java
index 161fdc7..e4dd4b1 100644
--- a/src/test/java/com/serliunx/ddns/test/support/ClientTest.java
+++ b/src/test/java/com/serliunx/ddns/test/support/ClientTest.java
@@ -1,6 +1,6 @@
 package com.serliunx.ddns.test.support;
 
-import com.serliunx.ddns.support.feign.client.IPAddressClient;
+import com.serliunx.ddns.client.IPAddressClient;
 import org.junit.Test;
 
 /**