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.hc.client5.http.classic;
28
29 import org.apache.hc.client5.http.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 public interface BackoffManager {
39
40 /**
41 * Called when we have decided that the result of
42 * using a connection should be interpreted as a
43 * backoff signal.
44 */
45 void backOff(HttpRoute route);
46
47 /**
48 * Called when we have determined that the result of
49 * using a connection has succeeded and that we may
50 * probe for more connections.
51 */
52 void probe(HttpRoute route);
53 }