TaskExecutorRegistration

<init>

Create a new TaskExecutorRegistration for a default ThreadPoolTaskExecutor.

Create a new TaskExecutorRegistration for a given ThreadPoolTaskExecutor.

corePoolSize

Set the core pool size of the ThreadPoolExecutor.

NOTE: The core pool size is effectively the max pool size when an unbounded queueCapacity is configured (the default). This is essentially the "Unbounded queues" strategy as explained in java.util.concurrent.ThreadPoolExecutor. When this strategy is used, the maxPoolSize is ignored.

By default this is set to twice the value of Runtime#availableProcessors(). In an application where tasks do not block frequently, the number should be closer to or equal to the number of available CPUs/cores.

keepAliveSeconds

Set the time limit for which threads may remain idle before being terminated. If there are more than the core number of threads currently in the pool, after waiting this amount of time without processing a task, excess threads will be terminated. This overrides any value set in the constructor.

By default this is set to 60.

maxPoolSize

Set the max pool size of the ThreadPoolExecutor.

NOTE: When an unbounded queueCapacity is configured (the default), the max pool size is effectively ignored. See the "Unbounded queues" strategy in java.util.concurrent.ThreadPoolExecutor for more details.

By default this is set to Integer.MAX_VALUE.

queueCapacity

Set the queue capacity for the ThreadPoolExecutor.

NOTE: when an unbounded queueCapacity is configured (the default), the core pool size is effectively the max pool size. This is essentially the "Unbounded queues" strategy as explained in java.util.concurrent.ThreadPoolExecutor. When this strategy is used, the maxPoolSize is ignored.

By default this is set to Integer.MAX_VALUE.