diosmosis
/ example.py
Created
August 15, 2011 22:41
Python decorator that catches exceptions and logs a traceback that includes every local variable of each frame.
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| 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) |
hellerbarde
/ latency.markdown
Created
May 31, 2012 13:16
— forked from jboner/latency.txt
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
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| 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: |
By @foldleft.bsky.social, see also Unfollow everyone on bsky.app.
- Go to
https://twitter.com/YOUR_USER_NAME/following - Open the Developer Console. (COMMAND+ALT+I on Mac)
- Paste this into the Developer Console and run it
// Unfollow everyone on twitter.com, by Jamie Mason (https://twitter.com/fold_left)
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| " 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 |
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
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| package main | |
| import ( | |
| "net/http" | |
| "database/sql" | |
| "fmt" | |
| "log" | |
| "os" | |
| ) |
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| /* 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.#'), |
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