├── README.md
└── node.js
├── package.json
├── README.md
├── client.html
└── server.js
/README.md:
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1 | Realtime stats implementation using Node.js/Golang, Redis and Socket.IO
2 |
3 | - node.js : Node.js implementation
4 | - golang : Go implementation
5 |
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/node.js/package.json:
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1 | {
2 | "name" : "node.js",
3 | "description" : "Realtime stats using node.js, socket.io and redis",
4 | "version" : "0.0.1",
5 | "author": {
6 | "name": "Venu Anuganti",
7 | "email": "venu@venublog.com"
8 | },
9 | "dependencies" : {
10 | "redis": "",
11 | "socket.io": "",
12 | "express": ""
13 | },
14 | "repository" : {
15 | "type": "git",
16 | "url": "http://github.com/vanuganti/realtime"
17 | },
18 | "engines" : {
19 | "node": ">=0.4.0"
20 | }
21 | }
22 |
23 |
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/node.js/README.md:
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1 | Realtime stats - Node.js, Socket.IO & Redis
2 | ===========================================
3 |
4 | For complete walk-through, check my blog post on this: http://venublog.com/2013/06/26/realtime-web-stats-using-node-js-socket-io-and-redis/
5 |
6 | Requirements:
7 | -------------
8 | - Node.js server (http://nodejs.org/)
9 | - Node.js modules
10 | - express (http://expressjs.com/)
11 | - redis (https://github.com/simplegeo/nodejs-redis)
12 | - socket.io (http://socket.io/#how-to-use)
13 |
14 | - Redis server (http://redis.io/)
15 |
16 | Get Started:
17 | ------------
18 |
19 | - Clone the git repo and install dependency packages
20 |
21 |
22 | ```shell
23 | $ git clone git@github.com:vanuganti/realtime.git
24 | $ cd realtime
25 | $ cd node.js
26 | $ npm install
27 | ```
28 |
29 | - Start the redis server (default localhost on port 6379)
30 | - Start node with server.js
31 |
32 | ```shell
33 | $ node server.js
34 | ```
35 |
36 | - Open client.html in browser code
37 |
38 | ```shell
39 | $ open client.html
40 | ```
41 |
42 | - Publish a counter to 'realtime' channel in redis
43 |
44 | ```shell
45 | $ redis-cli publish realtime 99
46 | ```
47 |
48 | - Notice the updated counter in browser
49 |
50 | For additional details, check http://venublog.com/2013/06/26/realtime-web-stats-using-node-js-socket-io-and-redis/
51 |
52 |
53 |
54 |
55 |
56 |
57 |
58 |
59 |
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/node.js/client.html:
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1 |
2 |
3 |
4 | REAL TIME Node.js, Redis and Socket.IO
5 |
6 |
7 |
8 |
9 |
10 |
11 |
39 |
40 |
41 |
42 |
43 |
44 | |
45 | 0
46 | |
47 |
48 |
49 |
50 |
51 |
52 |
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/node.js/server.js:
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1 | /*
2 | Node.js server script
3 | Required node packages: express, redis, socket.io
4 | */
5 | const PORT = 3000;
6 | const HOST = 'localhost';
7 |
8 | var express = require('express'),
9 | http = require('http'),
10 | server = http.createServer(app);
11 |
12 | var app = express();
13 |
14 | const redis = require('redis');
15 | const client = redis.createClient();
16 | log('info', 'connected to redis server');
17 |
18 | const io = require('socket.io');
19 |
20 | if (!module.parent) {
21 | server.listen(PORT, HOST);
22 | const socket = io.listen(server);
23 |
24 | socket.on('connection', function(client) {
25 | const subscribe = redis.createClient()
26 | subscribe.subscribe('realtime');
27 |
28 | subscribe.on("message", function(channel, message) {
29 | client.send(message);
30 | log('msg', "received from channel #" + channel + " : " + message);
31 | });
32 |
33 | client.on('message', function(msg) {
34 | log('debug', msg);
35 | });
36 |
37 | client.on('disconnect', function() {
38 | log('warn', 'disconnecting from redis');
39 | subscribe.quit();
40 | });
41 | });
42 | }
43 |
44 | function log(type, msg) {
45 |
46 | var color = '\u001b[0m',
47 | reset = '\u001b[0m';
48 |
49 | switch(type) {
50 | case "info":
51 | color = '\u001b[36m';
52 | break;
53 | case "warn":
54 | color = '\u001b[33m';
55 | break;
56 | case "error":
57 | color = '\u001b[31m';
58 | break;
59 | case "msg":
60 | color = '\u001b[34m';
61 | break;
62 | default:
63 | color = '\u001b[0m'
64 | }
65 |
66 | console.log(color + ' ' + type + ' - ' + reset + msg);
67 | }
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