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我们正在尝试开发/调整一个将 HTTP POST 每秒最多 10 个请求的 restlet 客户端。

restlet 网站提供了用于消耗资源的示例客户端代码。他们的例子是

ClientResource clientResource = new ClientResource(
            "http://localhost:8182/rest/test");
    TestResource testResource = clientResource.wrap(TestResource.class);

    // Retrieve the JSON value
    Customer result = testResource.retrieve();

然而，其他讨论（以及对该 wiki 的评论）表示这种方法存在问题。

似乎不清楚是否release()和/或exhaust()应该调用以释放资源。我试过了，例如

  ClientResource cs = new ClientResource(rootConnectionString);
  final Representation rep = cs.post(s);
    if (rep != null) {
        final long numBytes = rep.exhaust();
        rep.release();
    }

我们的客户端应用程序不能依赖垃圾收集器来避免资源耗尽。理想情况下，我们会重复使用相同的连接/套接字来提高性能。

我问的原因是我们的应用程序在性能测试中运行不佳，我们看到了间歇性问题。我认为这些是客户端，因为使用其他工具对服务器进行负载测试是可以的。

java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:168)
at org.apache.http.impl.io.AbstractSessionInputBuffer.fillBuffer(AbstractSessionInputBuffer.java:149)
at org.apache.http.impl.io.SocketInputBuffer.fillBuffer(SocketInputBuffer.java:110)
at org.apache.http.impl.io.AbstractSessionInputBuffer.readLine(AbstractSessionInputBuffer.java:260)
at org.apache.http.impl.conn.LoggingSessionInputBuffer.readLine(LoggingSessionInputBuffer.java:115)
at org.apache.http.impl.conn.DefaultResponseParser.parseHead(DefaultResponseParser.java:98)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:252)
at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:281)
at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:247)
at org.apache.http.impl.conn.AbstractClientConnAdapter.receiveResponseHeader(AbstractClientConnAdapter.java:219)
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:298)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:645)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:464)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:732)
at org.restlet.ext.httpclient.internal.HttpMethodCall.sendRequest(HttpMethodCall.java:333)
at org.restlet.engine.adapter.ClientAdapter.commit(ClientAdapter.java:111)
at org.restlet.engine.adapter.HttpClientHelper.handle(HttpClientHelper.java:109)
at org.restlet.Client.handle(Client.java:190)
at org.restlet.resource.ClientResource.handle(ClientResource.java:1064)
at org.restlet.resource.ClientResource.handleOutbound(ClientResource.java:1153)
at org.restlet.resource.ClientResource.handle(ClientResource.java:996)
at org.restlet.resource.ClientResource.handle(ClientResource.java:972)
at org.restlet.resource.ClientResource.post(ClientResource.java:1381)
at org.restlet.resource.ClientResource.post(ClientResource.java:1327)

真正有用的是一些正确清理的示例代码。
问候，
基兰

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0 回答 0