diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/pipeline/CachePipeline.java b/webmagic-core/src/main/java/us/codecraft/webmagic/pipeline/CachePipeline.java
deleted file mode 100644
index e0acd90..0000000
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/pipeline/CachePipeline.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package us.codecraft.webmagic.pipeline;
-
-import java.util.Collection;
-
-/**
- * @author yaoqiang
- *
- * 为pipeline提供缓存能力
- * 在某个时机执行批处理任务
- */
-public interface CachePipeline<T> extends Pipeline{
-
-    /**
-     * @param collection  缓存批处理
-     *
-     */
-    void process(Collection<T> collection);
-}
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/pipeline/CloseableCachePipeline.java b/webmagic-core/src/main/java/us/codecraft/webmagic/pipeline/CloseableCachePipeline.java
deleted file mode 100644
index 4ba433e..0000000
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/pipeline/CloseableCachePipeline.java
+++ /dev/null
@@ -1,87 +0,0 @@
-package us.codecraft.webmagic.pipeline;
-
-import lombok.extern.slf4j.Slf4j;
-import us.codecraft.webmagic.ResultItems;
-import us.codecraft.webmagic.Task;
-
-import java.io.Closeable;
-import java.io.IOException;
-import java.util.Collection;
-import java.util.HashSet;
-import java.util.Set;
-import java.util.concurrent.ArrayBlockingQueue;
-import java.util.concurrent.BlockingQueue;
-import java.util.concurrent.ExecutorService;
-
-/**
- * @author yaoqiang
- * 提供关闭时刷新能力
- * <p>
- * <p>
- * 不负责创建 {@link ExecutorService},如果需要异步执行，那么需要从外界传入，由外界自己管理 {@link ExecutorService}生命周期
- * @see ExecutorService
- */
-@Slf4j
-public abstract class CloseableCachePipeline implements CachePipeline<ResultItems>, Closeable {
-
-
-    private final BlockingQueue<ResultItems> cache;
-
-    private final ExecutorService executorService;
-
-    public CloseableCachePipeline(int max, ExecutorService executorService) {
-        this.cache = new ArrayBlockingQueue<>(max, false);
-        this.executorService = executorService;
-    }
-
-    public CloseableCachePipeline(int max) {
-        this(max, null);
-    }
-
-    /**
-     * @param resultItems 接收到的信息
-     * @param task 执行的任务
-     */
-    @Override
-    public final void process(ResultItems resultItems, Task task) {
-        try {
-            cache.put(resultItems);
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-            Thread.currentThread().interrupt();
-            log.error(e.getMessage(), e);
-        }
-        if (cache.remainingCapacity() == 0) {
-            // set 中的resultItem 使用权依然传递了出去，cache的使用全保留，考虑到后面也用不上 resultItem，所以发布出去问题也不大
-            // temp的修改权限被发布，理由同上，想添加，删除都可以，反正以后也用不上了;
-            Set<ResultItems> temp = new HashSet<>(cache);
-            if (executorService != null && !executorService.isShutdown()) {
-                executorService.execute(() -> process(temp, task));
-            } else {
-                process(temp, task);
-            }
-            cache.clear();
-        }
-
-    }
-
-    protected abstract void process(Collection<ResultItems> resultItems, Task task);
-
-    private synchronized void flush(Collection<ResultItems> resultItems) {
-        process(resultItems, null);
-
-    }
-
-    /**
-     * 结合源码，实现关闭时处理剩余的缓存，直接交由主线程处理
-     *
-     * @throws IOException 关闭可能出现异常，由上层处理
-     */
-    @Override
-    public final void close() throws IOException {
-        if (!cache.isEmpty()) {
-            flush(cache);
-            cache.clear();
-        }
-    }
-}
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/proxy/AbstractRefreshableProxyProvider.java b/webmagic-core/src/main/java/us/codecraft/webmagic/proxy/AbstractRefreshableProxyProvider.java
index 781553c..8e7cb08 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/proxy/AbstractRefreshableProxyProvider.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/proxy/AbstractRefreshableProxyProvider.java
@@ -3,9 +3,12 @@ package us.codecraft.webmagic.proxy;
 import lombok.extern.slf4j.Slf4j;
 import us.codecraft.webmagic.Task;
 
+import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.util.Comparator;
 import java.util.concurrent.*;
 import java.util.concurrent.atomic.AtomicReference;
+import java.util.concurrent.atomic.LongAdder;
 
 /**
  * @author yaoqiang
@@ -14,18 +17,26 @@ import java.util.concurrent.atomic.AtomicReference;
 @Slf4j
 public abstract class AbstractRefreshableProxyProvider implements RefreshableProxyProvider {
 
+    private final LongAdder totalGet = new LongAdder();
+
+    private final LongAdder canUse = new LongAdder();
 
     private final AtomicReference<FutureTask<Proxy>> usedProxyCache = new AtomicReference<>();
 
     private final PriorityBlockingQueue<ExpirableProxy> ipQueue = new PriorityBlockingQueue<>(1000, Comparator.comparing(ExpirableProxy::getExpireTime));
 
+    private final int maxHostNum;
 
-    protected void doPut(ExpirableProxy expirableProxy) {
-        ipQueue.put(expirableProxy);
+    public AbstractRefreshableProxyProvider(int maxHostNum) {
+        this.maxHostNum = maxHostNum;
     }
 
-    protected int hostSize() {
-        return ipQueue.size();
+    protected void doPut(ExpirableProxy expirableProxy) {
+        synchronized (ipQueue) {
+            if (ipQueue.size() <= maxHostNum) {
+                ipQueue.put(expirableProxy);
+            }
+        }
     }
 
     @Override
@@ -116,6 +127,7 @@ public abstract class AbstractRefreshableProxyProvider implements RefreshablePro
         do {
             proxy = ipQueue.take();
         } while (proxy.isExpire());
+        log.info("切换到proxy：ip:{}，port:{}，ip可用率:{}", proxy.getHost(), proxy.getPort(), BigDecimal.valueOf(canUse.sum()).divide(BigDecimal.valueOf(totalGet.sum()), 2, RoundingMode.HALF_DOWN).doubleValue());
         return proxy;
     }
 
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/proxy/ExpirableProxy.java b/webmagic-core/src/main/java/us/codecraft/webmagic/proxy/ExpirableProxy.java
index d22b7dc..f23caaf 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/proxy/ExpirableProxy.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/proxy/ExpirableProxy.java
@@ -1,6 +1,5 @@
 package us.codecraft.webmagic.proxy;
 
-import lombok.Getter;
 import org.apache.http.annotation.Contract;
 import org.apache.http.annotation.ThreadingBehavior;
 
@@ -14,7 +13,6 @@ import java.time.temporal.ChronoUnit;
  */
 @Contract(threading = ThreadingBehavior.IMMUTABLE_CONDITIONAL)
 public class ExpirableProxy extends Proxy {
-    @Getter
     private final int ttl;
     private final LocalDateTime expireTime;