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discourse/app
Sam Saffron 34ede90927 FIX: under rare conditions saving a new draft could error temporarily
Under rare conditions due to bad HTTP timing and so on a draft could be
set at the exact same time from 2 unicorn workers.

When this happened and all the stars aligned, one of the sets would win
and the other would raise an error.

This transparently handles the situation without adding any cost to the
draft system.

The alternative is to add a distributed mutex, tricky DB transaction or handle
the error in the controller. However this seems like a reasonable way to
work around a pretty big edge case.
2020-01-02 11:38:14 +11:00
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