我的大部分延迟都是由mongoDB user.fineOne引起的,但主要问题是我似乎无法找到代码中的位置.

在下图中,您可以看到调用我的API的get / all / proposal端点的跟踪详细信息.它首先是14个方法调用,它们是我的server.js中的中间件,之后是一个中间件：认证它有MongoDB用户findOne和那里的延迟.

获取/所有/提案的代码：

app.get('/all/proposals',isLoggedIn,function(req,res) {
   Proposal.find().sort({proposalNo: -1}).limit(5).exec(function(err,proposal){
       if(err){
           console.log(err);
       }else{
           console.log("All Proposals " + proposal);
           res.json(proposal);
       }
   });
});

现在,我无法看到我在get / all / proposal上运行MongoDB上的User.findOne调用.最初我认为是isLoggedIn中间件,我检查用户是否在会话中(Passport.js)但是你可以看到isLoggedIn Middleware只需要0.0222(ms).

同样的问题出现在多个API端点上,即get / caseStudy,它始终是user.findOne,下面是另一个例子：

谁能帮我解决这个问题.如果您需要更多详细信息,请告诉我.

更新：
Server.js代码

// set up ======================================================================

require('newrelic');
var express  = require('express');
var app      = express();                               // create our app w/ express
var server = require('http').createServer(app);
var mongoose = require('mongoose');                     // mongoose for mongodb
var port     = process.env.PORT || 8080;                // set the port
var database = require('./config/db');                  // load the database config
var morgan = require('morgan');                         // log requests to the console (express4)
var bodyParser = require('body-parser');                // pull information from HTML POST (express4)
var methodOverride = require('method-override');        // simulate DELETE and PUT (express4)
var passport = require('passport');
var flash    = require('connect-flash');
var session      = require('express-session');
var cookieParser = require('cookie-parser');
var compression = require('compression');
var nodemailer = require('nodemailer');
var busboy = require("connect-busboy");

// configuration ===============================================================


mongoose.connect(database.url);                                 // connect to mongoDB database on modulus.io
require('./config/passport')(passport);
app.use(express.static(__dirname + '/public'));  
app.use(express.static(__dirname + '/views'));  // set the static files location /public/img will be /img for users
app.use(busboy());
app.use(compression()); //use compression
app.use(morgan('dev'));                                         // log every request to the console
app.use(bodyParser.urlencoded({'extended': true}));             // parse application/x-www-form-urlencoded
app.use(bodyParser.json());                                     // parse application/json
app.use(bodyParser.json({ type: 'application/vnd.api+json' })); // parse application/vnd.api+json as json
app.use(methodOverride());
app.use(cookieParser());                                        // read cookies (needed for auth)
app.set('view engine','ejs');                                  // set up ejs for templating

// required for passport
app.use(session({ secret: '',resave: false,saveUninitialized: false })); // session secret
app.use(passport.initialize());
app.use(passport.session());                                    // persistent login sessions
app.use(flash());                                               // use connect-flash for flash messages stored in session

 // routes ======================================================================

require('./routes/index.js')(app,passport); // load our routes and pass in our app and fully configured passport
//require('./routes/knowledgeBase/index.js')(app,passport);
require('./routes/bios/index.js')(app,passport);

 // listen (start app with node server.js) ======================================

app.listen(port);
console.log("App listening on port " + port);

更新2：
Passport.js

// config/passport.js

// load all the things we need
var LocalStrategy   = require('passport-local').Strategy;
var crypto = require("crypto");
var api_key = '';
var domain = '';
var mailgun = require('mailgun-js')({apiKey: api_key,domain: domain});
// load up the user model
var User            = require('../app/models/user');

 // expose this function to our app using module.exports
 module.exports = function(passport) {

// =========================================================================
// passport session setup ==================================================
// =========================================================================
// required for persistent login sessions
// passport needs ability to serialize and unserialize users out of session

// used to serialize the user for the session
passport.serializeUser(function(user,done) {
    done(null,user.id);
});

// used to deserialize the user
passport.deserializeUser(function(id,done) {
    User.findById(id,function(err,user) {
        done(err,user);
    });
});

// =========================================================================
// LOCAL SIGNUP ============================================================
// =========================================================================
// we are using named strategies since we have one for login and one for signup
// by default,if there was no name,it would just be called 'local'

passport.use('local-signup',new LocalStrategy({
        // by default,local strategy uses username and password,we will override with email
        firstNameField: 'firstName',lastNameField: 'lastName',usernameField: 'email',passwordField: 'password',jobTitleField: 'jobTitle',startDateField: 'startDate',passReqToCallback: true // allows us to pass back the entire request to the callback
    },email,password,done) {

        // find a user whose email is the same as the forms email
        // we are checking to see if the user trying to login already exists
        User.findOne({
            'email': email
        },user) {
            // if there are any errors,return the error
            if (err)
                return done(err);

            // check to see if theres already a user with that email
            if (user) {
                return done(null,false,{
                    message: 'That email is already taken.'
                });
            }
            else {

                var token = crypto.randomBytes().toString();
                // if there is no user with that email
                // create the user
                var newUser = new User();

                // set the user's local credentials
                newUser.firstName = req.body.firstName;
                newUser.lastName = req.body.lastName;
                newUser.email = email;
                newUser.password = newUser.generateHash(password); // use the generateHash function in our user model
                newUser.jobTitle = req.body.jobTitle;
                newUser.startDate = req.body.startDate;
                newUser.birthday = req.body.birthday;
                newUser.region = req.body.region;
                newUser.sector = req.body.sector;
                newUser.accountConfirmationToken = token;
                newUser.accountConfirmationTokenExpires = Date.now() + 3600000;
                newUser.accountVerified = 'false';



                // save the user
                newUser.save(function(err) {
                    if (err)
                        throw err;
                    else {
                        return done(null,newUser);
                    }
                });
            }

        });

    }));

// =========================================================================
// LOCAL LOGIN =============================================================
// =========================================================================
// we are using named strategies since we have one for login and one for signup
// by default,it would just be called 'local'

passport.use('local-login',new LocalStrategy({
    // by default,we will override with email
    usernameField : 'email',passwordField : 'password',passReqToCallback : true // allows us to pass back the entire request to the callback
},done) { // callback with email and password from our form

    // find a user whose email is the same as the forms email
    // we are checking to see if the user trying to login already exists
    User.findOne({ 'email' :  email },user) {
        // if there are any errors,return the error before anything else
        if (err)
            return done(err);

        // if no user is found,return the message
        if (!user)
            return done(null,req.flash('loginMessage','No user found.')); // req.flash is the way to set flashdata using connect-flash

        // if the user is found but the password is wrong
        if (!user.validPassword(password))
            return done(null,'Oops! Wrong password.')); // create the loginMessage and save it to session as flashdata

        if(user.accountVerified == 'false')    
            return done(null,'Looks like you have not verified your account after registeration.'));
        else
            user.lastLogin = Date.now();
            user.save(function(err) {
                if (err)
                    throw err;
                else {
        // all is well,return successful user
                    return done(null,user);
                }
            });
    });

}));

};

更新3：
isLoggedIn函数

// route middleware to make sure a user is logged in
  function isLoggedIn(req,res,next) {

// if user is authenticated in the session,carry on 
if (req.isAuthenticated())
    return next();

    // if they aren't redirect them to the home page
    res.redirect('/');
 }

更新4：
获取提案的步骤

步骤1：
首先加载提案页面

app.get('/proposals',res) {
    res.render('proposals.ejs',{
        user : req.user // get the user out of session and pass to template
    });
});

第2步：
proposal页面有一个angular.js控制器/工厂,它在页面加载时调用以下函数来获取数据.

// =========================================================================
// FUNCTIONS TO BE RUN WHEN THE PAGE FIRST LOADS TO POPULATE FRONT-END =====
// =========================================================================
$scope.intialize = function() {
    $scope.getAllSectors();
    $scope.getLatestProposals();
}

// ===============================
// GET LATEST *5* PROPOSALS  =====
// ===============================
factory.getLatestProposals = function() {

    return $http.get('/all/proposals')
        .then(function(response) {
            //promise is fulfilled
            deferred.resolve(response.data);

            console.log("readched the filtered project service!");

            //promise is returned
            // return deferred.promise;
            return response.data;

        },function(response) {
            deferred.reject(response);

            //promise is returned
            return deferred.promise;
        });
};

第3步：
调用/ all / proposal路由

// =======================
//  GET All Proposals =====
//  =======================
app.get('/all/proposals',proposal){
       if(err){
           console.log(err);
       }else{
           console.log("All Proposals " + proposal);
           res.json(proposal);
       }
   });
});