Is there a global named reader/writer lock?

Question

I have multiple asp.net web apps serving a set of files. Periodically, one will update the file before serving it, but it can\'t update the file if it is in use.

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Answer 1

I don't think there's anything that meets your needs as stated (although I reserve the right to be wrong).

You could serve the file using a service. This solves two problems. First, as you stated, the problem of concurrency. Also, even if you can achieve synchronization, it becomes more difficult and ugly if you start load-balancing. Serving the file using a service will likely cost you in performance, but solves your synchronization problem.