Can a thread signal an event which is being waited for by a thread running in another process?
I have a requirement where multiple processes feed a queue which sends requiests to amazon web services for info on books and offers to sell the book. Currently the request queue is a database table, so any process on the system can place an entry on the
queue for the background process to read and send to amazon. I need a way to signal requesters that the background process has processed a request. ( I am assuming that semaphores and mutexes can only be signaled and waited for within the same process.
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