Add pool_timeout and fix buggy connection pool locking
#102
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Fixes a bug where the previous locking strategy caused unnecessary contention and could block all threads even when connections were available.
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Fixes a bug where the previous locking strategy caused a bottleneck and could block all threads even when connections were available.
pool_timeouttoMySQLConnectionPoolfor controlled blocking when the pool is exhausted.get_connection()to usequeue.get(block=True, timeout=pool_timeout).get_connectionis called.