1 /*
2 * ====================================================================
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 * ====================================================================
20 *
21 * This software consists of voluntary contributions made by many
22 * individuals on behalf of the Apache Software Foundation. For more
23 * information on the Apache Software Foundation, please see
24 * <http://www.apache.org/>.
25 *
26 */
27 package org.apache.http.client;
28
29 import org.apache.http.conn.routing.HttpRoute;
30
31 /**
32 * Represents a controller that dynamically adjusts the size
33 * of an available connection pool based on feedback from
34 * using the connections.
35 *
36 * @since 4.2
37 *
38 */
39 public interface BackoffManager {
40
41 /**
42 * Called when we have decided that the result of
43 * using a connection should be interpreted as a
44 * backoff signal.
45 */
46 void backOff(HttpRoute route);
47
48 /**
49 * Called when we have determined that the result of
50 * using a connection has succeeded and that we may
51 * probe for more connections.
52 */
53 void probe(HttpRoute route);
54 }