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@karmi
karmi / .gitignore
Created April 3, 2011 16:33
Visualizing timelines with Protovis and date histogram facet in ElasticSearch
.DS_Store
tmp/
@bergie
bergie / README.md
Created May 18, 2011 11:33
Falsy Values tutorials
@mikeyk
mikeyk / gist:1329319
Created October 31, 2011 22:56
Testing storage of millions of keys in Redis
#! /usr/bin/env python
import redis
import random
import pylibmc
import sys
r = redis.Redis(host = 'localhost', port = 6389)
mc = pylibmc.Client(['localhost:11222'])
@shilov
shilov / redis_json_marshal_eval_benchmarks.rb
Created January 27, 2012 23:01
Ruby Redis benchmarks for JSON vs Marshal vs String
# http://forrst.com/posts/JSON_vs_Marshal_vs_eval_Which_is_the_fastest_fo-6Qy
require 'benchmark'
require 'json'
require 'redis'
# -----------------
puts "Initialize variables.."
@JoshuaEstes
JoshuaEstes / 000-Cheat-Sheets.md
Last active May 1, 2024 04:03
Developer Cheat Sheets for bash, git, gpg, irssi, mutt, tmux, and vim. See my dotfiles repository for extra info.
@jboner
jboner / latency.txt
Last active May 3, 2024 15:17
Latency Numbers Every Programmer Should Know
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
@KartikTalwar
KartikTalwar / Documentation.md
Last active April 13, 2024 23:09
Rsync over SSH - (40MB/s over 1GB NICs)

The fastest remote directory rsync over ssh archival I can muster (40MB/s over 1gb NICs)

This creates an archive that does the following:

rsync (Everyone seems to like -z, but it is much slower for me)

  • a: archive mode - rescursive, preserves owner, preserves permissions, preserves modification times, preserves group, copies symlinks as symlinks, preserves device files.
  • H: preserves hard-links
  • A: preserves ACLs
@justinbmeyer
justinbmeyer / jsmem.md
Last active August 19, 2022 04:50
JS Memory

JavaScript Code

var str = "hi";

Memory allocation:

Address Value Description
...... ...
@drewolson
drewolson / reflection.go
Last active November 20, 2023 09:39
Golang Reflection Example
package main
import (
"fmt"
"reflect"
)
type Foo struct {
FirstName string `tag_name:"tag 1"`
LastName string `tag_name:"tag 2"`
@olivierlacan
olivierlacan / gary_bernhardt_screencasting_parley.md
Created June 1, 2013 03:04
Gary Bernhardt on Screencasting

I'm planning on either writing this up in detail or maybe doing a screencast about screencasting, but I'll give a short version here.

On sound quality:

This matters a lot. In decreasing order of importance:

  1. Remove echo. You have to hear this to understand. Set up a mic in front of your mouth and record a sentence. Then, put a thick comforter over you and the mic and say it again at the same distance. Listen to