Memcached：可以连接但无法设置值

Question

我使用 memcached 包在 Debian 上安装了 memcached。memcached 实例从 384 MB 开始。然后我尝试连接：

jcisio@cecile:~$ telnet 127.0.0.1 11211
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
set mykey 0 60 5
get mykey
CLIENT_ERROR bad data chunk
ERROR
stats items
END

这是什么意思？通常get mykey应该返回 5。

stats 命令给出

STAT pid 5456
STAT uptime 21334
STAT time 1326180707
STAT version 1.4.5
STAT pointer_size 64
STAT rusage_user 0.168010
STAT rusage_system 0.204012
STAT curr_connections 5
STAT total_connections 9
STAT connection_structures 6
STAT cmd_get 0
STAT cmd_set 1
STAT cmd_flush 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 auth_cmds 0
STAT auth_errors 0
STAT bytes_read 184
STAT bytes_written 2463
STAT limit_maxbytes 402653184
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT threads 4
STAT conn_yields 0
STAT bytes 0
STAT curr_items 0
STAT total_items 0
STAT evictions 0
STAT reclaimed 0
END

使用 -vv 的服务器日志：

<27 server listening (udp)
<28 new auto-negotiating client connection
28: Client using the ascii protocol
<28 set mykey 0 60 5
>28 CLIENT_ERROR bad data chunk
<28 ey
>28 ERROR
<28 stats items
<28 quit
<28 connection closed.

Answer 1

鉴于另一个站点上的示例，我敢打赌您没有将 mykey 设置为您期望的值。因此你的 getkey 也失败了。首先尝试获取密钥，或尝试删除 mykey，然后使用提供的示例。