gistfile1.js

exports.register = function (server, options, next) {

    server.dependency('vision');

    var cache = server.cache({
        expiresIn: 30 * 1000,
        generateFunc: function (id, next) {

            server.render(id.template, id.context, id.options, function(err, rendered){
                next(null rendered);
            })
        }

    });

    server.decorate('reply', 'viewCache', function (template, context, options) {

        var id = JSON.stringify({template: template, context:context, options: options}); // I would recommend to shorten key somehow using some good checksum
        return this.response(cache.get({id:id, template: template, context: context, options:options}));
    });

    return next();
};

exports.register.attributes = {
    pkg: require('../package.json')
};