chilts

var redis = require('redis');
var redlock = require('redlock');

var getLock2 = redlock({
    client : client,
    prefix : 'lock:', // optional
});

var getLock2 = redlock({
    // same credentials as redis.createClient()

chilts

// this needs to be read from the DB on startup
var userId = 1;

function putUser(user, cb) {
    // am making this up for the purposes of demonstration - don't know what your use-case is
    userId++;
    user.id = userId;

    var ops = [
        { type: 'put', key: 'sequence:userId', value : userId },

chilts

Node.js: Hints, Tips and Maybes

Callbacks

• Callbacks, synchronous and asynchronous

(Ends)

chilts

var async = require('async');
var pg = require('pg');
var connString = "postgres://postgres@localhost/template1";

// attempt 1 - all ok
pg.connect(connString, function(err, client, done) {
    // this function has a .length of 3 ... therefore done is defined
    console.log('1) Connected ok');
    done();
    // pg.end();

chilts

models = require './'
sql = require 'sql'
crypto = require 'crypto'
Downstairs = require('downstairs').Downstairs
Table = require('downstairs').Table
env = require './../config/env'
uuid = require 'node-uuid'
logging = require './../lib/logging'
moment = require 'moment'

chilts

$ npm test

> sound@0.1.0 test /home/chilts/src/appsattic-sound
> tap test/*.js

not ok test/basic.js .................................... 6/9
    Command: "node" "basic.js"
    TAP version 13
    ok 1 is an object
    ok 2 string passes

chilts

Streams

Readable Streams

Events:

• end - once all data has been read and ...

Writable Streams

chilts

var fmt = require('fmt');
var pg = require('pg');

var conString = "pg://scroober@localhost/scroober";

pg.connect(conString, function(err, cl) {
    if (err) {
        console.log(err);
        return;
    }

chilts

var http = require('http');
http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello World\n');
}).listen(1337, '127.0.0.1', function() {
    console.log('listening');
});
console.log('Server running at http://127.0.0.1:1337/');

chilts

$ ./test.js -b my-bucket
Bucket=my-bucket
Concurrency=3
Bucket=my-bucket
Concurrency=undefined