tiernano

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Security.Cryptography;
using System.Diagnostics;
using System.Collections;

namespace Dedupe

shripadk

###
Module dependencies
###
require.paths.unshift "#{__dirname}/lib/support/express-csrf/"
require.paths.unshift "#{__dirname}/lib/support/node_hash/lib/"

express 	= require 'express'
app 		= module.exports = express.createServer()

RedisStore 	= require 'connect-redis'

zerowidth

// includes bindings for fetching/fetched

PaginatedCollection = Backbone.Collection.extend({
  initialize: function() {
    _.bindAll(this, 'parse', 'url', 'pageInfo', 'nextPage', 'previousPage');
    this.page = 1;
  },
  fetch: function(options) {
    options || (options = {});
    this.trigger("fetching");

hgmnz

Types of index scans

Indexes

Sequential Scan:

• Read every row in the table
• No reading of index. Reading from indexes is also expensive.

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

andreyvit

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

jedy

// https://blogs.oracle.com/janp/entry/how_the_scp_protocol_works
package main

import (
	"fmt"

	"golang.org/x/crypto/ssh"
)

const privateKey = `content of id_rsa`

wofeiwo

/* ivan(a.t)mysqlab.net */
package main

import (
        "syscall"
        "os"
        "log"
)

func daemon(nochdir, noclose int) int {

rgreenjr

-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query 
FROM pg_stat_activity 
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' 
ORDER BY query_start desc;

-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query 
FROM pg_stat_activity 
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' 

jpetazzo

Rectifier

The diode bridge is the simplest rectifier I know.

Rectifier lets you share a directory with a docker container (just like $yourvm shared folders).

You don't have to install anything in your containers, and you only need to install diod in the host. diod is packaged on Ubuntu/Debian distros, and will automatically be apt-get install-ed if needed.

Since it uses diod to make a bridge, I called it rectifier. Yeah, that sucks, so if you have a better name, I'll steal it!