Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> select concat(round(sum(data_length)/(1024*1024),2) + round(sum(index_length)/(1024*1024),2),'MB') as 'DB Size' -> from table...
4),'M') AS 'Number of Rows', CONCAT(ROUND(data_length/(1024*1024*1024),4),'G') AS 'Data Size', CONCAT(ROUND(index_length/(1024*1024*1024),4),'G') AS 'Index Size', CONCAT(ROUND((data_length+index_length)/(1024*1024*1024),4),'G') AS'Total'FROM information...
DBHandle.h #pragmaonce#include<mutex>#include<thread>classDBHandle {public: DBHandle();~DBHandle();boolconnectRedis(stringstrIp,intiPort,stringstrPwd);voidfreeRedis();intgetRedisDBSize();boolwriteHsetToRedis();boolreadDataFromRedis();boolconnectMysql();voidFreeMysqlConnect();boolinsertDataToMysql...
shell>./sysbench --mysql-db=lvs_test --db-driver=mysql --mysql-host=10.186.17.150 \ --mysql-port=8066 --mysql-table-engine=innodb --mysql-user=action \ --oltp_auto_inc=off --mysql-password=action --test=../db/insert.lua \ --oltp_tables_count=1 --oltp-table-size=10000 prepare ...
WITH ( 'connector' = 'mysql-cdc', -- Debezium配置 'debezium.max.queue.size' = '162580', 'debezium.max.batch.size' = '40960', 'debezium.poll.interval.ms' = '50', -- 开启并行解析和解析过滤 'scan.only.deserialize.captured.tables.changelog.enabled' = 'true', -- 仅对指定表的变更事件...
WITH ( 'connector' = 'mysql-cdc', -- Debezium配置 'debezium.max.queue.size' = '162580', 'debezium.max.batch.size' = '40960', 'debezium.poll.interval.ms' = '50', -- 开启并行解析和解析过滤 'scan.only.deserialize.captured.tables.changelog.enabled' = 'true', -- 仅对指定表的变更事件...
getenv("DB_PASSWORD")); config.setDriverClassName("com.mysql.jdbc.Driver"); config.setMaximumPoolSize(1); dataSource = new HikariDataSource(config); } public String mainHandler(APIGatewayProxyRequestEvent requestEvent, Context context) { System.out.println("start main handler"); System....
{unsignedintindex=GetFieldIndex(name);returnrows_[nRow][index];}unsignedintGetRows()const{returnrows_.size();}unsignedintGetCols()const{returnfields_.size();}unsignedintGetFieldIndex(conststd::string&name)const{unsignedintindex=-1;for(unsignedinti=0;i<fields_.size();++i){if(fields_[i]....
数据备份不仅仅是开发、运维需要了解、熟练和掌握,一些架构设计或系统设计也需要熟练掌握,以备不时之需。最多的应用应该是编制文档上面的技术方案或者安全方案中涉及。 逻辑备份参数选项 从上一篇文章中,可以得到逻辑备份的格式如下: mysqldump [options] db_name[tbl_name...] ...
"$.size.uom", "cm", "$.status", "P") where value->"$.item"="paper" limit 1; 不携带 shardkey 的语句会在多个节点上执行,语法结构可能会修改多条数据,而携带 shardkey 可以确保正确只修改 1 条数据执行 更新多个文件 db.inventory.updateMany( { "qty": { $lt: 50 } }, { $set: {...