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Memcached 统计(stats)

Telnet stats

Memcached stats命令用于返回服务器统计信息,例如PID,版本,连接等。
Memcached stats命令的基本语法如下所示-

stats


stats
STAT pid 1120
STAT uptime 15316
STAT time 1605073360
STAT version 1.4.15
STAT libevent 2.0.21-stable
STAT pointer_size 64
STAT rusage_user 0.086050
STAT rusage_system 0.172100
STAT curr_connections 10
STAT total_connections 11
STAT connection_structures 11
STAT reserved_fds 20
STAT cmd_get 0
STAT cmd_set 2
STAT cmd_flush 0
STAT cmd_touch 0
STAT get_hits 0
STAT get_misses 0
STAT delete_misses 0
STAT delete_hits 0
STAT incr_misses 0
STAT incr_hits 0
STAT decr_misses 0
STAT decr_hits 0
STAT cas_misses 0
STAT cas_hits 0
STAT cas_badval 0
STAT touch_hits 0
STAT touch_misses 0
STAT auth_cmds 0
STAT auth_errors 0
STAT bytes_read 93
STAT bytes_written 48
STAT limit_maxbytes 67108864
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT threads 4
STAT conn_yields 0
STAT hash_power_level 16
STAT hash_bytes 524288
STAT hash_is_expanding 0
STAT bytes 77
STAT curr_items 1
STAT total_items 1
STAT expired_unfetched 0
STAT evicted_unfetched 0
STAT evictions 0
STAT reclaimed 0
END

Java应用程序使用stats

要从Memcached服务器获取统计信息,您需要使用Memcached getStats方法。

import java.io.IOException;
import java.net.InetSocketAddress;
import net.spy.memcached.MemcachedClient;
public class MemcachedJava {
public static void main(String[] args) {
// Connecting to Memcached server on localhost
MemcachedClient mcc = null;
try {
mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211));
} catch (IOException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
System.out.println("Connection to server sucessfully");
System.out.println(mcc.getStats());
}
}

在编译和执行程序时,您将看到以下输出-

Connection to server sucessfully
{/127.0.0.1:11211={incr_hits=2, get_hits=20, delete_hits=1, evictions=0, pid=9920, cas_badval=0, curr_connections=22, cmd_flush=0, total_items=15, bytes_written=1569, cas_hits=1, accepting_conns=1, auth_errors=0, decr_hits=2, limit_maxbytes=67108864, decr_misses=0, reclaimed=3, cmd_get=21, curr_items=1, threads=4, cmd_set=16, bytes_read=856, conn_yields=0, version=1.4.5_4_gaa7839e, uptime=16345, listen_disabled_num=0, total_connections=25, get_misses=1, incr_misses=0, connection_structures=23, bytes=56, time=1605073576, auth_cmds=0, pointer_size=32, cas_misses=0, delete_misses=0}}

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