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nate berkopec

Thread safety tip: do not modify the configuration of a library via a singleton at runtime.

Example: MyCoolLib.config.timeout = 30;

This is almost always going to lead to a thread safety issue, most libraries are not design to do this on a per-thread basis.

Dave Copeland :ruby:

@nateberkopec that should be safe in an initializer though, right?

Peter Solnica

@nateberkopec or even better: do not expose mutable singletons 🙂

ingemar

@nateberkopec If that is done once, at app initialization, it can't be a problem, can it?