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From Jordan Zimmerman <jor...@jordanzimmerman.com>
Subject Re: SharedValue, how does it work?
Date Wed, 01 Oct 2014 21:23:39 GMT
On October 1, 2014 at 4:18:52 PM, Scott Blum (dragonsinth@gmail.com) wrote:
4) Meanwhile user computes  A -> A'.

5) User calls sharedValue.trySetValue(A').  This succeeds because sharedValue thinks it's
up to date; it has no idea that the user is setting a value based on old data.
Well, I’d call that a user error. SharedValue is not an atomic value (you found that recipe
already). It’s meant to get updated in the background as a kind of cache. It can be thought
of as a cached node that has optimistic locking semantics for updating.

-JZ


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