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  --log_gc (Log heap samples on garbage collection for the hp2ps tool.)
        type: bool  default: false
  --expose_gc (expose gc extension)
        type: bool  default: false
  --max_new_space_size (max size of the new generation (in kBytes))
        type: int  default: 0
  --max_old_space_size (max size of the old generation (in Mbytes))
        type: int  default: 0
  --max_executable_size (max size of executable memory (in Mbytes))
        type: int  default: 0

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Never touch your local /etc/hosts file in OS X again

To setup your computer to work with *.dev domains, e.g. project.dev, awesome.dev and so on, without having to add to your hosts file each time.

Requirements

• Homebrew
• Mountain Lion

Install

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How to set up stress-free SSL on an OS X development machine

One of the best ways to reduce complexity (read: stress) in web development is to minimize the differences between your development and production environments. After being frustrated by attempts to unify the approach to SSL on my local machine and in production, I searched for a workflow that would make the protocol invisible to me between all environments.

Most workflows make the following compromises:

• Use HTTPS in production but HTTP locally. This is annoying because it makes the environments inconsistent, and the protocol choices leak up into the stack. For example, your web application needs to understand the underlying protocol when using the secure flag for cookies. If you don't get this right, your HTTP development server won't be able to read the cookies it writes, or worse, your HTTPS production server could pass sensitive cookies over an insecure connection.

• Use production SSL certificates locally. This is annoying

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Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

• Introduce Gizzard of Twitter - 트위터의 새로운 분산 관리 라이브러리 Gizzard를 소개합니다.
• The Architecture Twitter Uses to Deal with 150M Active Users, 300K QPS, a 22 MB/S Firehose, and Send Tweets in Under 5 Seconds
• Scaling Twitter: Making Twitter 10000 Percent Faster

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var mongoose = require('./db-connect'),
  Schema = mongoose.Schema,
  ObjectId = Schema.ObjectId,
  uuid = require('node-uuid'),
  Validator = require('validator').Validator,
  val = new Validator(),
  bcrypt = require('bcrypt');

Validator.prototype.error = function(msg) { return false; };

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Clustering: The basics

The trick? pass the file descriptor from a parent process and have the server.listen reuse that descriptor. So multiprocess in their own memory space (but with ENV shared usually)

It does not balance, it leaves it to the kernel.

In the last nodejs > 0.8 there is a cluster module (functional although marked experimental)

• http://nodejs.org/api/cluster.html
• Simple cluster example:

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tl;dr

1. Don't run as root.
2. For sessions, set httpOnly (and secure to true if running over SSL) when setting cookies.
3. Use the Helmet for secure headers: https://github.com/evilpacket/helmet
4. Enable csrf for preventing Cross-Site Request Forgery: http://expressjs.com/api.html#csrf
5. Don't use the deprecated bodyParser() and only use multipart explicitly. To avoid multiparts vulnerability to 'temp file' bloat, use the defer property and pipe() the multipart upload stream to the intended destination.

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// population of all cities over 1 million people using the cities1000 dataset from http://geonames.org

var fs = require('fs');
var cities = fs.createReadStream(__dirname + '/cities1000.txt');
var split = require('split');
var through = require('through');
var fields = require('cities1000').fields;
var popIndex = fields.indexOf('population');

var sum = 0;

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Title

<Additional information about your API call. Try to use verbs that match both request type (fetching vs modifying) and plurality (one vs multiple).>

• URL

  <The URL Structure (path only, no root url)>

• Method:

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var express = require('express');
var sys = require('util');
var oauth = require('oauth');

var app = express.createServer();

var _twitterConsumerKey = process.env['TWITTER_CONSUMER_KEY'];
var _twitterConsumerSecret = process.env['TWITTER_CONSUMER_SECRET'];

console.log("_twitterConsumerKey: %s and _twitterConsumerSecret %s", process.env['TWITTER_CONSUMER_KEY'], process.env['TWITTER_CONSUMER_SECRET']);