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Add the async module

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Every @Async behaviour that surprises people, asserted by a test and captured
to docs/output/: the self-invocation trap, what CGLIB cannot override, the
IllegalArgumentException a plain return type throws, the unbounded queue that
makes max-size decoration, spring.task.execution.propagate-context (new in
Boot 4.1.0), the two Executor beans that leave @Async on an unpooled
SimpleAsyncTaskExecutor, and JEP 491 measured on JDK 21 against JDK 25.
This commit is contained in:
Ankur Mhatre
2026-09-01 23:27:47 +05:30
commit 9b3fe88813
53 changed files with 1891 additions and 0 deletions
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async/docs/output/pool-bounded-queue.txt Normal file
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== core-size=4, max-size=12, queue-capacity=4, 16 blocking tasks ==
distinct threads that ran a task : 12
thread names : [task-6, task-7, task-11, task-12, task-10, task-8, task-9, task-1, task-2, task-3, task-4, task-5]
4 core threads, 4 tasks queued, 8 more threads created up to max-size.