java @Scheduled & scheduler：pool-size 到底是做什么的？
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@Scheduled & scheduler: What exactly does pool-size do?
提问by chzbrgla
I want to run several scheduled Tasks simultaneously.
我想同时运行多个计划任务。
When configuring spring to do so, I can supply a pool-size to the scheduler:
在配置 spring 时，我可以为调度程序提供池大小：
<task:annotation-driven executor="myExecutor" scheduler="myScheduler"/>
<task:executor id="myExecutor" pool-size="32"/>
<task:scheduler id="myScheduler" pool-size="1000"/>
But what exactly does the pool-size mean here?
但是池大小在这里究竟意味着什么？
Does it mean it can only store 1000 scheduled Methods or does it mean that only 1000 Methods can be processed at the same time?
这是否意味着它只能存储 1000 个调度方法，还是意味着只能同时处理 1000 个方法？
tldr;If a @Scheduled(fixedDelay=60) annotated Method is NOTexecuted at the moment (meaning it's in between the delay), does it fill up the pool or not?
tldr; 如果@Scheduled(fixedDelay=60) 注释的方法目前没有执行（意味着它在延迟之间），它是否填满了池？
采纳答案by GaryF
It refers to the number of threads that can be pooled at once by the underlying ThreadPoolExecutor i.e. the notional number of methods that can be run at the same time.
它指的是底层 ThreadPoolExecutor 可以一次汇集的线程数，即可以同时运行的方法的名义数量。
The documentation on the task namespacegoes into a lot of the detail you need.
任务命名空间的文档包含了许多您需要的细节。
I expect that 1000 threads is probably going to be far too many in most environments.
我预计在大多数环境中 1000 个线程可能会太多。
