CoffeeScript/Backbone Template Renderer with Caching, originally written in JS on github

renderer.coffee

class TemplateRenderer
        constructor: (@directory='/static/templates', @cache={}) ->
        render: (name, tmpl_data) ->
            unless @cache[name]
                url = @directory + '/' + name + '.html'

                tmpl_string = null
                $.ajax {
                    url: url,
                    method: 'GET',
                    async: false,
                    success: (data) ->
                        tmpl_string = data;
                }

                @cache[name] = _.template(tmpl_string)

            @cache[name](tmpl_data)