amgorb

If your redis initial replication fails with error like 
"5101:M 20 Feb 18:14:29.130 # Client id=4500196 addr=71.459.815.760:43872 fd=533 name= age=127 idle=127 flags=S db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=0 obl=13997 oll=1227 omem=192281275 events=rw cmd=psync scheduled to be closed ASAP for overcoming of output buffer limits.

this means that slave buffer is not enough and you should increase it (at master!) with command like
redis-cli config set client-output-buffer-limit "slave 836870912 836870912 0"

more info: https://redis.io/topics/clients

dmpanch

All actions are performed in Terminal.app.

1. Install Homebrew http://brew.sh/

2. Install Jack (route audio tool) http://jackaudio.org/. Current stable version from official website doesn't work with
MacOS Sierra (I use 10.12.3) so you need to download beta version from there https://yadi.sk/d/JwT10b7v3Dm5yy.
After installing reboot your computer.

3. Install Darkice (audio streamer) via brew.

meanevo

# Make sure you have these installed
yum install -y make gcc perl pcre-devel zlib-devel
# Download/Extract source
wget -O /tmp/haproxy.tgz http://www.haproxy.org/download/1.7/src/haproxy-1.7.2.tar.gz
tar -zxvf /tmp/haproxy.tgz -C /tmp
cd /tmp/haproxy-*
# Compile HAProxy
# https://github.com/haproxy/haproxy/blob/master/README
make \
    TARGET=linux2628 USE_LINUX_TPROXY=1 USE_ZLIB=1 USE_REGPARM=1 USE_PCRE=1 USE_PCRE_JIT=1 \

nathwill

vrrp_script chk_redis_master {
  script "redis-cli info replication | grep -q 'role:master'"
  interval 2
  weight 2
  rise 2
  fall 2
}

vrrp_instance redis_vip {
  interface eth0

sphvn

var traverse = function(o, fn) {
  for (var i in o) {
    fn.apply(this,[i,o[i]]);  
    if (o[i] !== null && typeof(o[i])=="object") {
      traverse(o[i], fn);
    }
  }
}

// usage

vitorbritto

Remove MySQL completely

1. Open the Terminal

2. Use mysqldump to backup your databases

3. Check for MySQL processes with: ps -ax | grep mysql

4. Stop and kill any MySQL processes

5. Analyze MySQL on HomeBrew:

   brew remove mysql
   

jdx

// This script will boot app.js with the number of workers
// specified in WORKER_COUNT.
//
// The master will respond to SIGHUP, which will trigger
// restarting all the workers and reloading the app.

var cluster = require('cluster');
var workerCount = process.env.WORKER_COUNT || 2;

// Defines what each worker needs to run

mikermcneil

// To disable socket.io, disable the sockets hook (you'll have to disable the pubsub hook as well)
// This is a replacement for the default app.js file:

require('sails').lift({
  hooks: {
    sockets: false,
    pubsub: false
  }

zhouming

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class MY_Session extends CI_Session{

	private $sess_use_redis = TRUE;	
	private $redis = '';

	public function __construct($params = array()) {
		//parent::__construct();
		$this->CI =& get_instance();

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD