refactor(goroutine): improve concurrency safety and testing #122
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- Enable race condition detection in Go tests by adding `-race` flag - Refactor `Queue` to use a local variable for `workerCount` with proper locking - Refactor `Ring` to use a local variable for `count` with proper locking and defer unlocking - Replace direct access to `busyWorkers` metric with `BusyWorkers()` method in tests Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
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-raceflagQueueto use a local variable forworkerCountwith proper lockingRingto use a local variable forcountwith proper locking and defer unlockingbusyWorkersmetric withBusyWorkers()method in tests