EGreg

// Illustrative case
// YEAH -- ILLUSTRATIVE OF THE FACT THAT YOU CAN ISSUE PARALLEL QUERIES TO THE DATABASE INSTEAD OF SERIAL ONES LIKE A DUMB THREADED IMPLEMENTATION THAT IS INFERIOR FOR DOING WEB SERVERS

function (recentBlogPostIds, callback) { // obviously you need this, but use callback instead of return

var results = {};
var count = 0;

for (var i = 0; i < recentBlogPostIds.length; i++) {
  var blogPostId = recentBlogPostIds[i];

EGreg

// asynchronous version
asynchronousCache.get("id:3244", function(err, myThing) {
  if (myThing == null) {
    asynchronousDB.query("SELECT * from something WHERE id = 3244", function(err, myThing) {
      // We now have a thing from DB, do something with result
      doSomething(myThing);
    });

  } else {
    // We have a thing from cache, do something with result