Nginx虚拟主机多server_name的顺序问题[原创]
亿级数据的高并发通用搜索引擎架构设计[原创]
2008-11-30 13:21 | by
[文章作者：张宴 本文版本：v1.0 最后修改：2008.11.30 转载请注明原文链接：http://blog.zyan.cc/post/384/]
首先，需要了解Memcached协议，如果不清楚可参考《Memcached 协议中英文对照》。
1、数据存储（假设key为zhangyan，value为12345）
2、数据取回（假设key为zhangyan）
12345
END
3、数值增加1（假设key为zhangyan，并且value为正整数）
4、数值减少3（假设key为zhangyan，并且value为正整数）
5、数据删除（假设key为zhangyan）
6、查看Memcached状态
STAT uptime 4120500
STAT time 1228021767
STAT version 1.2.6
STAT pointer_size 32
STAT rusage_user 433.463103
STAT rusage_system 1224.515845
STAT curr_items 1132460
STAT total_items 8980260
STAT bytes 1895325386
STAT curr_connections 252
STAT total_connections 547850
STAT connection_structures 1189
STAT cmd_get 13619685
STAT cmd_set 8980260
STAT get_hits 6851607
STAT get_misses 6768078
STAT evictions 0
STAT bytes_read 160396238246
STAT bytes_written 260080686529
STAT limit_maxbytes 2147483648
STAT threads 1
END
7、模拟top命令，查看Memcached状态：
或者
首先，需要了解Memcached协议，如果不清楚可参考《Memcached 协议中英文对照》。
1、数据存储（假设key为zhangyan，value为12345）
printf "set zhangyan 0 0 5\r\n12345\r\n" | nc 127.0.0.1 11211
STORED2、数据取回（假设key为zhangyan）
printf "get zhangyan\r\n" | nc 127.0.0.1 11211
VALUE zhangyan 0 512345
END
3、数值增加1（假设key为zhangyan，并且value为正整数）
printf "incr zhangyan 1\r\n" | nc 127.0.0.1 11211
123464、数值减少3（假设key为zhangyan，并且value为正整数）
printf "decr zhangyan 3\r\n" | nc 127.0.0.1 11211
123435、数据删除（假设key为zhangyan）
printf "delete zhangyan\r\n" | nc 127.0.0.1 11211
DELETED6、查看Memcached状态
printf "stats\r\n" | nc 127.0.0.1 11211
STAT pid 3025STAT uptime 4120500
STAT time 1228021767
STAT version 1.2.6
STAT pointer_size 32
STAT rusage_user 433.463103
STAT rusage_system 1224.515845
STAT curr_items 1132460
STAT total_items 8980260
STAT bytes 1895325386
STAT curr_connections 252
STAT total_connections 547850
STAT connection_structures 1189
STAT cmd_get 13619685
STAT cmd_set 8980260
STAT get_hits 6851607
STAT get_misses 6768078
STAT evictions 0
STAT bytes_read 160396238246
STAT bytes_written 260080686529
STAT limit_maxbytes 2147483648
STAT threads 1
END
7、模拟top命令，查看Memcached状态：
watch "printf 'stats\r\n' | nc 127.0.0.1 11211"
或者
watch "echo stats | nc 127.0.0.1 11211"
Red Bottom Shoes Outlet
A pair of great pumps is very important for office lady. Women in office needs more time and energy to deal with their work. So a pair of comfortable and beautiful pumps are very important to them. In office, we all know that black is the most safe and versatile color, so most pumps are black.
Christian Louboutin Evening Shoes
Christian Louboutin Slingback