Question

我正在使用具有连接池的Spring rest模板。我的应用程序必须支持高负载。我在stackoverflow中找到了以下定义，因为我了解到基本的RestTemplate不支持池化。

这是我的实施：

@Bean
public static RestTemplate restTemplate() {

    PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager();
    connManager.setMaxTotal(1500);
    connManager.setDefaultMaxPerRoute(1500);

    CloseableHttpClient client = HttpClients.custom()
            .setConnectionManager(connManager)
            .setMaxConnTotal(1500)
            .setMaxConnPerRoute(1500)
            .build();

    RestTemplate restTemplate = new RestTemplate(new HttpComponentsClientHttpRequestFactory(client));

    HttpComponentsClientHttpRequestFactory requestFactory = (HttpComponentsClientHttpRequestFactory) restTemplate.getRequestFactory();
    requestFactory.setConnectTimeout(3000);
    requestFactory.setReadTimeout(3000);
    requestFactory.setConnectionRequestTimeout(3000);

    return restTemplate;
}

现在，只有在高负荷下，我才会偶尔获得高延迟（几乎2秒）。我正在使用Vert.x，所以我可以确切地看到我被延迟的地方：

    018-06-04 04:08:48,299 WARN  io.vertx.core.impl.BlockedThreadChecker - Thread Thread[vert.x-eventloop-thread-1,5,main] has been blocked for 1872 ms, time limit is 100
io.vertx.core.VertxException: Thread blocked
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
    at java.net.SocketInputStream.read(SocketInputStream.java:171)
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
    at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:137)
    at org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:153)
    at org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:282)
    at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:140)
    at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57)
    at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:259)
    at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:163)
    at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:167)
    at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:273)
    at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:271)
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184)
    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:88)
    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55)
    at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:89)
    at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48)
    at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:53)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:652)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:613)

我不相信增加游泳池的数量应该做任何事情，1500很多（甚至可能太多）。

有人可以帮忙吗？问候，Ido

连接池Spring休息模板 - 延迟问题

0 个答案: