rails/action_controller_route_subscriber: reduce allocations #1012
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The `memory_profiler` gem reports that Ruby allocates 22.6 Kb just for the 'controller' string. Since this code path is critical, we want to squeeze out the best performance we can achieve. Making the keys constant reduces allocations to zero.
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The
memory_profilergem reports that Ruby allocates 22.6 Kb just for the'controller' string. Since this code path is critical, we want to squeeze out
the best performance we can achieve. Making the keys constant reduces
allocations to zero.