Finagle + Memcached編解碼器性能不佳

我在finagle應用程序中使用memcached編解碼器。但性能非常差，比使用spymemcached客戶端更糟糕。我用spinamemached獲得了8k req/s，用finagle的memcached編解碼器獲得了10 req/s。 memcached也在我的機器上運行。我錯過了什麼嗎？應力試驗過程中發生錯誤的例子：Finagle + Memcached編解碼器性能不佳

Mar 05, 2014 10:22:10 AM com.twitter.finagle.builder.SourceTrackingMonitor handle 
SEVERE: A server service httpserver threw an exception 
com.twitter.finagle.ChannelWriteException: org.jboss.netty.channel.ConnectTimeoutException: connection timed out: localhost/127.0.0.1:11211 
at com.twitter.finagle.NoStacktrace(Unknown Source) 
Caused by: org.jboss.netty.channel.ConnectTimeoutException: connection timed out: localhost/127.0.0.1:11211 
at org.jboss.netty.channel.socket.nio.NioClientBoss.processConnectTimeout(NioClientBoss.java:137) 
at org.jboss.netty.channel.socket.nio.NioClientBoss.process(NioClientBoss.java:83) 
at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:318) 
at org.jboss.netty.channel.socket.nio.NioClientBoss.run(NioClientBoss.java:42) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) 
at java.lang.Thread.run(Thread.java:722)

如何在客戶端被配置成：

def client = Client(ClientBuilder() 
    .hosts(parseHosts()) 
    .hostConnectionLimit(10) 
    .codec(Memcached()) 
    .retries(2) 
    .daemon(true) 
    .build())

簡單的GET操作：

def getUserTries(username: String): Future[Int] = { 
    client.get(s"${username}_tries") flatMap { v => v match { 
     case Some(c:ChannelBuffer) => Future.value(UserCache.fromChannelBuffer(c).toInt) 
     case _ => Future.value(0) 
    } 
}

和一組操作：

def saveUserTries(username: String, tries: Int): Future[Unit] = { 
    client.set(s"${username}_tries", UserCache.toChannelBuffer(tries.toString)) 
}

來源

2014-03-05 André Gonçalves

Y你應該達到與Finagle相似的性能，但是我沒有看到你粘貼的代碼有什麼問題。你應該看看這finagle memcached benchmark並適應你的使用。

來源

2014-03-06 17:40:38

Finagle + Memcached編解碼器性能不佳

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