amatellanes

/* Useful celery config.

app = Celery('tasks',
             broker='redis://localhost:6379',
             backend='redis://localhost:6379')

app.conf.update(
    CELERY_TASK_RESULT_EXPIRES=3600,
    CELERY_QUEUES=(
        Queue('default', routing_key='tasks.#'),

soheilhy

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

simonista

" Don't try to be vi compatible
set nocompatible

" Helps force plugins to load correctly when it is turned back on below
filetype off

" TODO: Load plugins here (pathogen or vundle)

" Turn on syntax highlighting
syntax on

JamieMason

Unfollow everyone on twitter.com

1. Go to https://twitter.com/YOUR_USER_NAME/following
2. Open the Developer Console. (COMMAND+ALT+I on Mac)
3. Paste this into the Developer Console and run it

// Unfollow everyone on twitter.com, by Jamie Mason (https://twitter.com/fold_left)
// https://gist.github.com/JamieMason/7580315
//

daltonmatos

import mock

class AlmostAlwaysTrue(object):

    def __init__(self, total_iterations=1):
        self.total_iterations = total_iterations
        self.current_iteration = 0

    def __nonzero__(self):
        if self.current_iteration < self.total_iterations:

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

diosmosis

import os
from log_exceptions import log_exceptions

def throw_something(a1, a2):
  raise Exception('Whoops!')

@log_exceptions(log_if = os.getenv('MYAPP_DEBUG') is not None)
def my_function(arg1, arg2):
  throw_something(arg1 + 24, arg2 - 24)

omarish

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