express-visitor-counter
v1.5.1
Published
Express middleware to count visitors using IP address and cookies
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Express-Visitor-Counter
Express middleware to count visitors using IP address and cookies. The middleware will increment 7 counters :
requests-dd-mm-yyyy
: number of daily HTTP requests received by the servernew-visitors-dd-mm-yyyy
: number of daily new visitors on your websitevisitors-dd-mm-yyyy
: number of daily unique visitors on your websitenew-visitors-from-mobile-dd-mm-yyyy
: number of daily new visitors from a mobile device on your websitevisitors-from-mobile-dd-mm-yyyy
: number of daily unique visitors from a mobile device on your websiteip-addresses-dd-mm-yyyy
: number of daily unique ip addresses which hit your serversessions-dd-mm-yyyy
: number of daily unique sessions which hit your server
Installation
npm i express-visitor-counter
Usage
The middleware needs the Express option trust proxy
to be set to true and the express-session
middleware.
The middleware can be used with multiple instances of server if counters are stored in Redis database.
With a MongoDB collection :
const express = require('express');
const expressSession = require('express-session');
const expressVisitorCounter = require('express-visitor-counter');
const { MongoClient } = require('mongodb');
(async () => {
const dbConnection = await MongoClient.connect('mongodb://localhost/test', { useUnifiedTopology: true });
const counters = dbConnection.db().collection('counters');
const app = express();
app.enable('trust proxy');
app.use(expressSession({ secret: 'secret', resave: false, saveUninitialized: true }));
app.use(expressVisitorCounter({ collection: counters }));
app.get('/', async (req, res, next) => res.json(await counters.find().toArray()));
app.listen(8080);
})();
With a hook function :
const express = require('express');
const expressSession = require('express-session');
const expressVisitorCounter = require('express-visitor-counter');
const counters = {};
(async () => {
const app = express();
app.enable('trust proxy');
app.use(expressSession({ secret: 'secret', resave: false, saveUninitialized: true }));
app.use(expressVisitorCounter({ hook: counterId => counters[counterId] = (counters[counterId] || 0) + 1 }));
app.get('/', (req, res, next) => res.json(counters));
app.listen(8080);
})();
With counters synchronized and stored in Redis database :
const express = require('express');
const expressSession = require('express-session');
const expressVisitorCounter = require('express-visitor-counter');
const redis = require('redis');
const counters = {};
const redisClient = redis.createClient({ database: 1 });
(async () => {
await redisClient.connect();
const app = express();
app.enable('trust proxy');
app.use(expressSession({ secret: 'secret', resave: false, saveUninitialized: true }));
app.use(expressVisitorCounter({ hook: counterId => counters[counterId] = (counters[counterId] || 0) + 1, redisClient }));
app.get('/', (req, res, next) => res.json(counters));
app.listen(8080);
})();
Tests
The tests will use Mocha and require MongoDB and Redis to be running.
npm test