memcached安装使用以及测试

memcached安装
版本V1.0
时间2012-07-30
版权GPL
作者itnihao 邮箱 itnihao@qq.com
博客 http://itnihao.blog.51cto.com
如需重新发行，请注明以上信息，谢谢合作

第一部分 下载源码进行安装
wget https://github.com/downloads/libevent/libevent/libevent-2.0.19-stable.tar.gz tar xvf libevent-2.0.19-stable.tar.gz
cd libevent-2.0.19-stable
./configure
make
make install

wget http://memcached.googlecode.com/files/memcached-1.4.13.tar.gz tar xvf memcached-1.4.13.tar.gz
cd memcached-1.4.13
./configure
make
make install

echo "/usr/local/lib" >> /etc/ld.so.conf
ldconfig
/usr/local/bin/memcached  -m 32m -p 11211 -d -u root -P /var/run/memcached.pid -c 1024

wget https://launchpad.net/libmemcached/1.0/0.34/+download/libmemcached-0.34.tar.gz tar xvf libmemcached-0.34.tar.gz
cd libmemcached-0.34
./configure --with-memcached=/usr/local/bin/memcached
i#./configure --prefix=/usr/local/libmemcached --with-memcached=/usr/local/bin/memcached
make
make install

#wget https://launchpad.net/libmemcached/1.0/1.0.8/+download/libmemcached-1.0.8.tar.gz #wget https://launchpad.net/memcached-udfs/trunk/version-1.0/+download/memcached_functions_mysql-1.0.tar.gz wget https://launchpad.net/memcached-udfs/trunk/1.1/+download/memcached_functions_mysql-1.1.tar.gz tar xvf memcached_functions_mysql-1.1.tar.gz
cd memcached_functions_mysql-1.1
./configure --with-mysql=/usr/local/mysql/bin/mysql_config  --libdir=/usr/local/mysql/lib/mysql --with-libmemcached=/usr/local
make
make install
cd utils/ #注意此处的my.cnf 必须为osocket=/var/lib/mysql/mysql.sock,否则，运行脚本会报错 #find /usr/ -name libmemcached_functions_mysql.so ln -s /usr/local/mysql/lib/mysql/libmemcached_functions_mysql.so /usr/local/mysql/lib/plugin/libmemcached_functions_mysql.so ./install.pl  -s -u=root -p=itnihao

第二部分 在mysql进行设置memcached

mysql> select name,dl from mysql.func;
+------------------------------+---------------------------------+
| name                         | dl                              |
+------------------------------+---------------------------------+
| memc_cas_by_key              | libmemcached_functions_mysql.so |
| memc_cas                     | libmemcached_functions_mysql.so |
| memc_servers_set             | libmemcached_functions_mysql.so |
| memc_add                     | libmemcached_functions_mysql.so |
| memc_libmemcached_version    | libmemcached_functions_mysql.so |
| memc_add_by_key              | libmemcached_functions_mysql.so |
| memc_server_count            | libmemcached_functions_mysql.so |
| memc_stat_get_keys           | libmemcached_functions_mysql.so |
| memc_append                  | libmemcached_functions_mysql.so |
| memc_replace_by_key          | libmemcached_functions_mysql.so |
| memc_prepend                 | libmemcached_functions_mysql.so |
| memc_behavior_get            | libmemcached_functions_mysql.so |
| memc_udf_version             | libmemcached_functions_mysql.so |
| memc_set_by_key              | libmemcached_functions_mysql.so |
| memc_get_by_key              | libmemcached_functions_mysql.so |
| memc_increment               | libmemcached_functions_mysql.so |
| memc_behavior_set            | libmemcached_functions_mysql.so |
| memc_stats                   | libmemcached_functions_mysql.so |
| memc_list_distribution_types | libmemcached_functions_mysql.so |
| memc_list_hash_types         | libmemcached_functions_mysql.so |
| memc_append_by_key           | libmemcached_functions_mysql.so |
| memc_servers_behavior_set    | libmemcached_functions_mysql.so |
| memc_replace                 | libmemcached_functions_mysql.so |
| memc_set                     | libmemcached_functions_mysql.so |
| memc_prepend_by_key          | libmemcached_functions_mysql.so |
| memc_get                     | libmemcached_functions_mysql.so |
| memc_list_behaviors          | libmemcached_functions_mysql.so |
| memc_delete                  | libmemcached_functions_mysql.so |
| memc_stat_get_value          | libmemcached_functions_mysql.so |
| memc_decrement               | libmemcached_functions_mysql.so |
| memc_delete_by_key           | libmemcached_functions_mysql.so |
| memc_servers_behavior_get    | libmemcached_functions_mysql.so |
+------------------------------+---------------------------------+

第三部分memcached的应用实例

#对功能进行测试，源码包已经提供测试模块
cat memcached_functions_mysql-1.1/sql/trigger_fun.sql
mysql> use test
drop table if exists urls;
create table urls (
id int(3) not null,
url varchar(64) not null default '',
primary key (id)
);

mysql> select memc_servers_set('localhost:11211');
+-------------------------------------+
| memc_servers_set('localhost:11211') |
+-------------------------------------+
|                                   0 |
+-------------------------------------+

mysql> select memc_set('urls:sequence', 0);
+------------------------------+
| memc_set('urls:sequence', 0) |
+------------------------------+
|                            1 |
+------------------------------+

mysql>DELIMITER |

DROP TRIGGER IF EXISTS url_mem_insert |
CREATE TRIGGER url_mem_insert
BEFORE INSERT ON urls
FOR EACH ROW BEGIN
SET NEW.id= memc_increment('urls:sequence');
SET @mm= memc_set(concat('urls:',NEW.id), NEW.url);
END |

DROP TRIGGER IF EXISTS url_mem_update |
CREATE TRIGGER url_mem_update
BEFORE UPDATE ON urls
FOR EACH ROW BEGIN
SET @mm= memc_replace(concat('urls:',OLD.id), NEW.url);
END |

DROP TRIGGER IF EXISTS url_mem_delete |
CREATE TRIGGER url_mem_delete
BEFORE DELETE ON urls
FOR EACH ROW BEGIN
SET @mm= memc_delete(concat('urls:',OLD.id));
END |

DELIMITER ;

insert into urls (url) values ('http://google.com');
insert into urls (url) values ('http://lycos.com/');
insert into urls (url) values ('http://tripod.com/');
insert into urls (url) values ('http://microsoft.com/');
insert into urls (url) values ('http://slashdot.org');
insert into urls (url) values ('http://mysql.com');
select * from urls;

select memc_get('urls:1');
select memc_get('urls:2');
select memc_get('urls:3');
select memc_get('urls:4');
select memc_get('urls:5');
select memc_get('urls:6');

update urls set url= 'http://mysql.com/sun' where url = 'http://mysql.com';
select url from urls where url = 'http://mysql.com/sun';
select memc_get('urls:6');

delete from urls where url = 'http://microsoft.com/';
select * from urls where url='http://microsoft.com/';
select memc_get('urls:4');

mysql> select memc_servers_set('192.168.16.21:11211');
+-----------------------------------------+
| memc_servers_set('192.168.16.21:11211') |
+-----------------------------------------+
|                                       0 |
+-----------------------------------------+

mysql> select memc_server_count();
+---------------------+
| memc_server_count() |
+---------------------+
|                   1 |
+---------------------+

mysql> select memc_list_behaviors()\G
*************************** 1. row ***************************
memc_list_behaviors():
MEMCACHED SERVER BEHAVIORS
MEMCACHED_BEHAVIOR_SUPPORT_CAS
MEMCACHED_BEHAVIOR_NO_BLOCK
MEMCACHED_BEHAVIOR_TCP_NODELAY
MEMCACHED_BEHAVIOR_HASH
MEMCACHED_BEHAVIOR_CACHE_LOOKUPS
MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE
MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE
MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
MEMCACHED_BEHAVIOR_KETAMA
MEMCACHED_BEHAVIOR_POLL_TIMEOUT
MEMCACHED_BEHAVIOR_RETRY_TIMEOUT
MEMCACHED_BEHAVIOR_DISTRIBUTION
MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
MEMCACHED_BEHAVIOR_USER_DATA
MEMCACHED_BEHAVIOR_SORT_HOSTS
MEMCACHED_BEHAVIOR_VERIFY_KEY
MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT
MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED
MEMCACHED_BEHAVIOR_KETAMA_HASH
MEMCACHED_BEHAVIOR_BINARY_PROTOCOL
MEMCACHED_BEHAVIOR_SND_TIMEOUT
MEMCACHED_BEHAVIOR_RCV_TIMEOUT
MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT
MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK
MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK

MEMCACHED_HASH_DEFAULT
MEMCACHED_HASH_MD5
MEMCA

mysql> select memc_servers_behavior_set('MEMCACHED_BEHAVIOR_NO_BLOCK','1');
+--------------------------------------------------------------+
| memc_servers_behavior_set('MEMCACHED_BEHAVIOR_NO_BLOCK','1') |
+--------------------------------------------------------------+
|                                                            0 |
+--------------------------------------------------------------+

mysql> select memc_servers_behavior_set('MEMCACHED_BEHAVIOR_TCP_NODELAY','1');
+-----------------------------------------------------------------+
| memc_servers_behavior_set('MEMCACHED_BEHAVIOR_TCP_NODELAY','1') |
+-----------------------------------------------------------------+
|                                                               0 |
+-----------------------------------------------------------------+

测试

#向表urls中插入数据，然后查看memcached是否对数据执行set操作。
mysql> insert into urls (url) values ('http://google.com');
mysql> insert into urls (url) values ('http://lycos.com/');
mysql> insert into urls (url) values ('http://tripod.com/');
mysql> insert into urls (url) values ('http://microsoft.com/');
mysql> insert into urls (url) values ('http://slashdot.org');
mysql> insert into urls (url) values ('http://mysql.com');
mysql> select * from urls;

mysql> select memc_get('urls:8');
+--------------------+
| memc_get('urls:8') |
+--------------------+
| http://google.com  |
+--------------------+
1 row in set (0.00 sec)

mysql> select memc_get('urls:9');
+--------------------+
| memc_get('urls:9') |
+--------------------+
| NULL               |
+--------------------+
1 row in set (0.05 sec)

mysql> select memc_get('urls:10');
+---------------------+
| memc_get('urls:10') |
+---------------------+
| http://tripod.com/  |
+---------------------+
1 row in set (0.00 sec)

#在memcached上telent查看数据更新
[root@localhost ~]# telnet 192.168.16.21 11211
Trying 192.168.16.21...
Connected to 192.168.16.21.
Escape character is '^]'.
get urls:8
VALUE urls:8 0 17 http://google.com END
quit
Connection closed by foreign host.

mysql> update test.urls set url="http://www.baidu.com" where id=8;
Query OK, 0 rows affected, 1 warning (0.00 sec)
Rows matched: 1  Changed: 0  Warnings: 1

#在mysql中更新数据，查看memcached中是否会更新呢
mysql> select * from urls;
+----+-----------------------+
| id | url                   |
+----+-----------------------+
|  8 | http://www.baidu.com  |
|  9 | http://lycos.com/     |
| 10 | http://tripod.com/    |
| 11 | http://microsoft.com/ |
| 12 | http://slashdot.org   |
| 13 | http://mysql.com      |
+----+-----------------------+
6 rows in set (0.00 sec)
[root@localhost ~]#  telnet 192.168.16.21 11211
Trying 192.168.16.21...
Connected to 192.168.16.21.
Escape character is '^]'.
get urls:8
VALUE urls:8 0 20 http://www.baidu.com END
quit
Connection closed by foreign host.

需要注意libmemcached-0.40以上的版本在memcached_functions_mysql编译会出现以下问题，

servers.c: In function ‘memc_servers_set’:
servers.c:121: error: ‘memcached_st’ has no member named ‘hosts’
servers.c:122: error: ‘memcached_st’ has no member named ‘hosts’
servers.c:123: error: ‘memcached_st’ has no member named ‘hosts’

源代码此处定义的问题，暂时没有找到解决方法，希望各位高手解决这个问题

memcached_version(master_memc);
if (master_memc->hosts[0].major_version >= 1 &&
master_memc->hosts[0].minor_version >= 2 &&
master_memc->hosts[0].micro_version >= 4)
memcached_behavior_set(master_memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, set);
memcached_server_list_free(servers);
pthread_mutex_unlock(&memc_servers_mutex);
fprintf(stderr, "rc %d\n", rc);
return ((long long) rc == MEMCACHED_SUCCESS ? 0 : rc);
}

参考以下链接

http://asyty.iteye.com/blog/1442587

http://www.bluegecko.net/mysql/memcached-functions-for-mysql-1-1-released/

/article/6932494.html

memcache%E5%AE%89%E8%A3%85%E6%80%BB%E7%BB%93.txt]https://jiwaisms.googlecode.com/svn/wiki/[%E7%AC%94%E8%AE%B0]memcache%E5%AE%89%E8%A3%85%E6%80%BB%E7%BB%93.txt

http://www.haogongju.net/art/1333032

/article/6393841.html

http://www.mylearning.cc/htmlfile/ArticleList/2011/7/27/bb19f32f-38a7-43b4-acd3-0eb6d24edfff.html

本文出自 “itnihao的运维技术博客” 博客，请务必保留此出处http://itnihao.blog.51cto.com/1741976/947364