2019獨角獸企業重金招聘Python工程師標準>>>

一.安裝wget?https://launchpad.net/libmemcached/1.0/0.34/+download/libmemcached-0.34.tar.gz yum?install?gcc44?gcc44-c++?libstdc++44-devel export?CC=/usr/bin/gcc44 export?CXX=/usr/bin/g++44 ./configure?--prefix=/soft/libmemcached?-disable-64bit?CFLAGS="-O3?-march=i686"?\ --with-memcached=/root/libmemcached-1.0.7/memcached make?&&?make?installwget?https://launchpad.net/memcached-udfs/trunk/1.1/+download/memcached_functions_mysql-1.1.tar.gz ./configure?--prefix=/soft/UDFS/memcache_mysql?\ --with-mysql=/soft/mysql/bin/mysql_config?\ --libdir=/soft/mysql/lib/plugin?\ --with-libmemcached=/soft/UDFS/libmemcached make?&&?make?install mysql?-uroot?-pmysql?<?/sql/install_functions.sql mysql?-uroot?-pmysql?-se?"select?name,dl?from?mysql.func"select?memc_servers_set('127.0.0.1:11211');//如果mysql?restart，需要重新運行這句以建立與memcached之間的關系 select?memc_server_count(); select?memc_set('urls:sequence',?0);select?memc_list_behaviors()\G//修改memcached參數的行為select?memc_servers_behavior_set('MEMCACHED_BEHAVIOR_NO_BLOCK','1'); selectmemc_servers_behavior_set('MEMCACHED_BEHAVIOR_TCP_NODELAY','1');? //設置MEMCACHED_BEHAVIOR_NO_BLOCK為打開狀態，這樣在memcached出現問題時（不能連接時）數據繼續插入到 mysql中，報錯提示，如果不設置此值，如果memcached失敗，mysql需要等到timeout才可以插入到表中。二.測試： drop?table?if?exists?urls; create?table?urls?(id?int(3)?not?null?auto_increment,url?varchar(64)?not?null?default?'',primary?key?(id));select?memc_servers_set('localhost:11211'); select?memc_set('urls:sequence',?0);DELIMITER?|DROP?TRIGGER?IF?EXISTS?url_mem_insert?| CREATE?TRIGGER?url_mem_insert BEFORE?INSERT?ON?urls FOR?EACH?ROW?BEGINSET?NEW.id=?memc_increment('urls:sequence');?SET?@mm=?memc_set(NEW.id,?NEW.url); END?|DROP?TRIGGER?IF?EXISTS?url_mem_update?| CREATE?TRIGGER?url_mem_update BEFORE?UPDATE?ON?urls FOR?EACH?ROW?BEGINSET?@mm=?memc_replace(OLD.id,?NEW.url); END?|DROP?TRIGGER?IF?EXISTS?url_mem_delete?| CREATE?TRIGGER?url_mem_delete BEFORE?DELETE?ON?urls FOR?EACH?ROW?BEGINSET?@mm=?memc_delete(OLD.id); END?|DELIMITER?;insert?into?urls?(url)?value?('http://google.com'); insert?into?urls?(url)?value?('http://lycos.com/'); insert?into?urls?(url)?value?('http://tripod.com/'); insert?into?urls?(url)?value?('http://microsoft.com/'); insert?into?urls?(url)?value('http://slashdot.org'); insert?into?urls?(url)?value?('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');

轉載于:https://my.oschina.net/u/1449160/blog/198863

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