模块化Node.js Express MongoDB应用程序的更好方法

Question

I am creating application which has dynamic several parts, like

• header
  • menu 1
  • menu 2
• content
• sidebar
• footer

Each part is fetching value from the database. right now what happened is when my page loads it is querying database to fetch the menu1, menu2, sidebar and footer, but which is actually fixed, and do not need database request once it loaded. here is the sudo code.

router.get('/', function(req, res, next) {
/*get menu 1*/
/*get menu 2*/
/*get menu content*/
/*get menu sidebar*/
/*get menu footer*/
/*render template*/
}

I am beginner to nodejs, can any one light up how can I save the database request? sample code will be helpful.

Answer 1

First of all, why do you need to query database for menu and footer. Most of the time these parts are plain html and can be included directly included into the view or template.

Usually, content is the only part that is changed from one page to another. You even mentioned that menu, sidebar and footer are fixed. So why not include them in the View directly.

If you absolutly need to get them from database then get the contents of menu, sidebar and footer from database on the first run and save them to session variables.