TinyCache

cache.js

module.exports = function() {
  var cache = {}
  var timeouts = {}

  function replaceTimeout(key) {
    clearTimeout(timeouts[key])
    timeouts[key] = setTimeout(function() {
      delete cache[key]
    }, 5000)
  }

  return {
    put: function(key, value) {
      cache[key] = value
      replaceTimeout(key)
    },  
    find: function(key) {
      if (!cache[key]) return null 

      replaceTimeout(key)
      return cache[key]
    }   
  }
}

i'm trying to get find down to ...

find: (key) ->
try return cache[key]
finally addTimeout key