spring 转发到getaway产生的http版本问题

[com.alibaba.nacos.client.Worker.longPolling.fixed-192.168.100.142_8848-192.168.100.142_8849-192.168.100.142_8850-d67a6b59-dbf7-4e45-acf3-6bfc8a062624] c.a.n.c.config.impl.ClientWorker: longPolling error : 
java.lang.OutOfMemoryError: unable to create new native thread
    at java.lang.Thread.start0(Native Method)
    at java.lang.Thread.start(Thread.java:717)
    at sun.net.www.http.KeepAliveCache$1.run(KeepAliveCache.java:112)
    at sun.net.www.http.KeepAliveCache$1.run(KeepAliveCache.java:96)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.net.www.http.KeepAliveCache.put(KeepAliveCache.java:95)
    at sun.net.www.http.HttpClient.putInKeepAliveCache(HttpClient.java:438)
    at sun.net.www.http.HttpClient.finished(HttpClient.java:395)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1850)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
    at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
    at com.alibaba.nacos.client.config.impl.HttpSimpleClient.httpPost(HttpSimpleClient.java:125)
    at com.alibaba.nacos.client.config.http.ServerHttpAgent.httpPost(ServerHttpAgent.java:135)
    at com.alibaba.nacos.client.config.http.MetricsHttpAgent.httpPost(MetricsHttpAgent.java:64)
    at com.alibaba.nacos.client.config.impl.ClientWorker.checkUpdateConfigStr(ClientWorker.java:377)
    at com.alibaba.nacos.client.config.impl.ClientWorker.checkUpdateDataIds(ClientWorker.java:352)
    at com.alibaba.nacos.client.config.impl.ClientWorker$LongPollingRunnable.run(ClientWorker.java:512)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
 

getaway在http1.0下的效率很差，

而nginx反向代理默认http版本1.0，导致getaway被压垮。

解决办法：nginx反向代理设置http1.1

upstream http_backend {
    server 127.0.0.1:8080;

    keepalive 16;
}

server {
    ...

    location /http/ {
        proxy_pass http://http_backend;
        proxy_http_version 1.1;
        proxy_set_header Connection "";
        ...
    }
}
 

反向代理应该都使用http1.1，而不只是应用getway,没有使用1.1的nginx本身应该还有很大的优化空间。

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