docs/code-frags/counter-col/lib/CounterCol.js
function(object, options) {
          var created = typeof this.cache[object._id] === 'undefined'
          this.cache[object._id] = object
          return {
            created: created,
            val: object
          }
        }
function(object, options) {
          var created = typeof this.cache[object._id] === 'undefined'
          this.cache[object._id] = object
          return {
            created: created,
            val: object
          }
        }
post-save-memCacheCounterAdvanced pre-saveObject-memCacheCounterAdvanced