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Asked: 2026-05-11T09:52:55+00:00

I’m using the awesome cache-money gem with a large rails project. I frequently get

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I’m using the awesome cache-money gem with a large rails project. I frequently get these exceptions

MemCache::MemCacheError: execution expired’

There doesn’t seem to be a rhyme nor reason. What exactly does this mean, and how to fix?

EDIT:

Here is a representative stack trace:

lib/authenticated_system.rb:100:in `login_from_session' lib/authenticated_system.rb:12:in `current_user' lib/authenticated_system.rb:6:in `logged_in?' lib/authenticated_system.rb:35:in `authorized?' lib/authenticated_system.rb:53:in `login_required'

The line in question is from RESTful_Authentication:

self.current_user = User.find(session[:user_id]) if session[:user_id]
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1 Answer

  1. I think that Michael Simons answered my question via his blog post. In essence, this is a known problem that exists between Passenger and Memcached.

    Here was Michael’s fix:

    # environment.rb begin    PhusionPassenger.on_event(:starting_worker_process) do |forked|      if forked        # We're in smart spawning mode, so...        # Close duplicated memcached connections - they will open themselves        CACHE.reset      end    end # In case you're not running under Passenger (i.e. devmode with mongrel) rescue NameError => error end
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