本课内容目前为英文。
Queues and groups
Resizing an uploaded photo should not make the user wait: put a job in a queue and let a worker do it. Knowing who two players both follow should not take a heavy query. Lists and sets handle both.
本课内容目前为英文。
Resizing an uploaded photo should not make the user wait: put a job in a queue and let a worker do it. Knowing who two players both follow should not take a heavy query. Lists and sets handle both.