我一直在尝试在我的Windows机器上运行PostgresSQL Docker容器并使用以下命令挂载数据卷:
docker run -p 5432:5432 -it --volume c:\Users\me\Desktop\pg\data\:/var/lib/postgresql/data postgres:latest -e POSTGRES_USER=user POSTGRES_PASSWORD=password
但是,当容器尝试启动时,我会不断收到权限被拒绝错误列表:
chown: changing ownership of ‘/var/lib/postgresql/data/pg_log’: Permission denied
chown: changing ownership of ‘/var/lib/postgresql/data/pg_logical/mappings’: Permission denied
chown: changing ownership of ‘/var/lib/postgresql/data/pg_logical/snapshots’: Permission denied
chown: changing ownership of ‘/var/lib/postgresql/data/pg_logical’: Permission denied
chown: changing ownership of ‘/var/lib/postgresql/data/pg_multixact/members/0000’: Permission denied
chown: changing ownership of ‘/var/lib/postgresql/data/pg_multixact/members’: Permission denied
chown: changing ownership of ‘/var/lib/postgresql/data/pg_multixact/offsets/0000’: Permission denied
chown: changing ownership of ‘/var/lib/postgresql/data/pg_multixact/offsets’: Permission denied
chown: changing ownership of ‘/var/lib/postgresql/data/pg_multixact’: Permission denied
chown: changing ownership …我最近开始研究Akka 2.0框架,并且能够运行一些代码,生成执行简单oracle数据库调用的actor,执行简单的计算等等,但是生产中没有任何东西.
我想知道的是,是否有一般的经验法则或最佳实践来确定为某些类型的任务产生多少个演员？比方说,我有一个200 jdbc连接的连接池,我是否创建了一个代表每个连接的actor？我是否创建了一些并使用循环法？
谢谢.