expiration.js

// Require Couchbase Module
var couchbase = require('couchbase');

// Setup Cluster Connection Object
var cluster = new couchbase.Cluster('couchbase://127.0.0.1');

// Setup Bucket object to be reused within the code
var bucket = cluster.openBucket('travel-sample');

// Setup a new Document, with 2 second expiry and store in in the Bucket
//		 - note -  API uses unix epoch time in seconds
var key = "nodeDevguideExampleExpiry";
bucket.insert(key, {test:"Some Test Value"}, {expiry: 2}, function(err, res) {
    if (err) throw err;

    if(res){

        console.log('Initialized Document With Expiry');

        // Get Document before Expiry
        bucket.get(key, function(err, resPre) {
            if (err) throw err;

            if(resPre) {

                console.log('Retreived Document Before Expiry:', resPre.value);

                // Wait 4 seconds, and try to retrieve Document again
                setTimeout(function () {
                    bucket.get(key, function (err, resExp) {
                        if (err){

                            // Document expired, and should throw an error of not found
                            console.log('Document Expired:', err.message)
                            console.log('Example Successful - Exiting');
                            process.exit(0);
                        }
                    });
                }, 4000);
            }
        });
    }
});