metamaps--metamaps/realtime/node_modules/redis/examples/web_server.js

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// A simple web server that generates dyanmic content based on responses from Redis
var http = require("http"), server,
redis_client = require("redis").createClient();
server = http.createServer(function (request, response) {
response.writeHead(200, {
"Content-Type": "text/plain"
});
var redis_info, total_requests;
redis_client.info(function (err, reply) {
redis_info = reply; // stash response in outer scope
});
redis_client.incr("requests", function (err, reply) {
total_requests = reply; // stash response in outer scope
});
redis_client.hincrby("ip", request.connection.remoteAddress, 1);
redis_client.hgetall("ip", function (err, reply) {
// This is the last reply, so all of the previous replies must have completed already
response.write("This page was generated after talking to redis.\n\n" +
"Redis info:\n" + redis_info + "\n" +
"Total requests: " + total_requests + "\n\n" +
"IP count: \n");
Object.keys(reply).forEach(function (ip) {
response.write(" " + ip + ": " + reply[ip] + "\n");
});
response.end();
});
}).listen(80);