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BSC
Updated 2 years ago by Admin
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Java
jvm
Updated 2 years ago by Admin
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...
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BSC
Updated 2 years ago by Admin
mysql 操作
Mysql
Updated 2 years ago by Admin
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123456'; CREATE USER '...
同步全节点
区块链
Updated 2 years ago by Admin
.\geth_windows.exe --config .\config-test\config.toml --datadir ./node --cache 18000 --rpc.allow-...
centos 切换 java 版本
Java
Updated 2 years ago by Admin
update-alternatives --config java
mysql 主从配置
Mysql
Updated 2 years ago by Admin
change master to master_host='127.0.0.1',master_port=3308,master_user='fingernft',master_password...
yum查看软件包是通过哪个源下载的
yum
Updated 2 years ago by Admin
yum provides
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
Updated 3 years ago by Admin
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...
cmd 多 jar 启动
Java
Updated 3 years ago by Admin
java -D loader.path=./ -jar .\manager-foreign-edition-0.0.1-SNAPSHOT.jar
mybatis 自动生成实体命令
Java
Updated 3 years ago by Admin
mvn mybatis-generator:generate
web3j
web3j
Updated 3 years ago by Admin
web3j generate solidity -b .\NFT_sol_NFT.bin -a .\NFT_sol_NFT.abi -o ./javaAPI -p com.yqj.nft
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