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Displaying posts with tag: consumer (reset)

How to notify event listeners in MySQL
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A high-performance application that has producers and consumers of some resource, such as a queue of messages, needs an efficient way to notify the consumers when the producer has inserted into the queue. Polling the queue for changes is not a good option. MySQL's GET_LOCK() and RELEASE_LOCK() functions can provide both mutual exclusivity and notifications.

This post was prompted by a message to the MySQL general emailing list some time ago, but I'm finally getting around to actually testing the theoretical solution I mentioned then. I can never just think my way through anything that involves locking and waiting... I have to test it.

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