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

alexjs

#
# Slightly tighter CORS config for nginx
#
# A modification of https://gist.github.com/1064640/ to include a white-list of URLs
#
# Despite the W3C guidance suggesting that a list of origins can be passed as part of
# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox) 
# don't seem to play nicely with this.
#

quiver

Pub/Sub pattern with PostgreSQL's LISTEN/NOTIFY command

This is a simple chat-like program using pub-sub pattern, backed by PostgreSQL's LISTEN/NOTIFY command.

Publish

publish message to foo channel from user nickname.

$ python pub.py foo nickname
PUBLISH to channel #foo

klovadis

-- gets all fields from a hash as a dictionary
local hgetall = function (key)
  local bulk = redis.call('HGETALL', key)
	local result = {}
	local nextkey
	for i, v in ipairs(bulk) do
		if i % 2 == 1 then
			nextkey = v
		else
			result[nextkey] = v

truetug

#!/usr/bin/env python
# encoding: utf-8
import functools
import hashlib
import logging

import tornado.web
import tornado.gen
import tornado.httpclient
import tornado.ioloop

jack7890

mkdown

What is this?

Mkdown renders Markdown GitHub gists with alternative CSS. Use it to elegantly share gists written in Markdown.

How do I use this?

To create your own mkdown URL, append the gist ID in a URL of the form: http://mkdown.com/{GIST ID}. The gist ID is the string at the end of a gist URL.

jproby

# API authentication


from social.apps.django_app.utils import strategy
from rest_framework.authtoken.models import Token
from rest_framework.views import APIView
from rest_framework import parsers
from rest_framework import renderers
from rest_framework.authentication import get_authorization_header
from rest_framework.response import Response

m0sth8

// Example
package main;

import (
    "jsonhelper"
    "fmt"
)

func main(){
	jsonValue := []interface {}{

pyos

import time
import random
import struct
import select
import socket


def chk(data):
    x = sum(x << 8 if i % 2 else x for i, x in enumerate(data)) & 0xFFFFFFFF
    x = (x >> 16) + (x & 0xFFFF)

FZambia

1. Add into /etc/ssh/sshd_config on remote machine (remote.example.com):

GatewayPorts yes

2. Restart sshd:

/etc/init.d/sshd restart