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BSC

Updated 2 years ago by Admin

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Java jvm

字节码指令 Java虚拟机的指令由一个字节长度的,代表某种特定操作含义的数字,称之为操作码,以及跟随其后的零至多个代表此操作所需参数的操作数而构成。操作码的长度为1个字节,因此最大只有256个...

Updated 2 years ago by Admin

获取余额

BSC

Updated 2 years ago by Admin

mysql 操作

Mysql

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123456'; CREATE USER '...

Updated 2 years ago by Admin

同步全节点

区块链

.\geth_windows.exe --config .\config-test\config.toml --datadir ./node --cache 18000 --rpc.allow-...

Updated 2 years ago by Admin

centos 切换 java 版本

Java

 update-alternatives --config java

Updated 2 years ago by Admin

mysql 主从配置

Mysql

change master to master_host='127.0.0.1',master_port=3308,master_user='fingernft',master_password...

Updated 2 years ago by Admin

yum查看软件包是通过哪个源下载的

yum

yum provides

Updated 2 years ago by Admin

微信网页授权

分布式事务 TCC事务

Updated 2 years ago by Admin

合约监听

分布式事务 TCC事务

Updated 2 years ago by Admin

dashboard

Java arthas

数据说明: ID:java级别的线程id,注意这个id不能跟jstack中的nativeID一一对应NAME:线程名GROUP:线程组名PRIORITY:线程优先级,1 ~ 10 之间的数...

Updated 3 years ago by Admin

cmd 多 jar 启动

Java

java -D loader.path=./ -jar .\manager-foreign-edition-0.0.1-SNAPSHOT.jar

Updated 3 years ago by Admin

mybatis 自动生成实体命令

Java

mvn mybatis-generator:generate

Updated 3 years ago by Admin

web3j

web3j

 web3j generate solidity -b .\NFT_sol_NFT.bin -a .\NFT_sol_NFT.abi -o ./javaAPI -p com.yqj.nft

Updated 3 years ago by Admin

负载均衡

Nginx

Updated 3 years ago by Admin

Java线程池的拒绝策略有哪些?

Java

Updated 3 years ago by Admin

Mysql的count(*)和count(1)谁更快

Mysql

Updated 3 years ago by Admin

秒杀系统如何解决超卖等常见问题?

Redis

Updated 3 years ago by Admin

线上几百万消息积压如何处理?

RobbitMQ

Updated 3 years ago by Admin

为什么重写equals方法,一定要重写hashcode方法?

Java

Updated 3 years ago by Admin