code: function debounceUpdate(combo) {
        bouncedUpdates[combo.uri] = combo;
        if (Object.keys(bouncedUpdates).length < bounceHold) {
          clearTimeout(bounceTimeout);
          bounceTimeout = setTimeout(function() {
            var toDebounce = Object.keys(bouncedUpdates).map(function(b) { return bouncedUpdates[b]; });
            bouncedUpdates = {};
            fayeClient.publish('/item/updated', toDebounce);
          }, bounceDelay);
        }
    }
docs: batch updates per a size or time frame. note bounceHold may be exceeded due to the delay.