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weeks of coding can save you hours of planning!

Michael Hausenblas mhausenblas

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weeks of coding can save you hours of planning!
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@njh
njh / _README.md
Last active October 5, 2019 12:06
Shell script to create a WebID certificate using OpenSSL
@tobyhede
tobyhede / postsql.sql
Created May 17, 2012 03:08
PostgreSQL as JSON Document Store
-- PostgreSQL 9.2 beta (for the new JSON datatype)
-- You can actually use an earlier version and a TEXT type too
-- PL/V8 http://code.google.com/p/plv8js/wiki/PLV8
-- Inspired by
-- http://people.planetpostgresql.org/andrew/index.php?/archives/249-Using-PLV8-to-index-JSON.html
-- http://ssql-pgaustin.herokuapp.com/#1
-- JSON Types need to be mapped into corresponding PG types
--
@jboner
jboner / latency.txt
Last active May 19, 2025 16:12
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
@wbolster
wbolster / happybase_test_put_counter.py
Created June 1, 2012 19:26 — forked from srs81/happybase_test_put_counter.py
Python code to test HappyBase library (HBase), and counter and put speeds
#!/usr/bin/env python
import logging
import random
import time
import happybase
logging.basicConfig()
logger = logging.getLogger()
@JeniT
JeniT / gist:2927644
Created June 14, 2012 01:40
Possible way to provide POSTable URI in RDF
<http://www.amazon.com/gp/product/B000QECL4I>
eg:reviews <http://www.amazon.com/product-reviews/B000QECL4I> ;
eg:order "http://www.amazon.com/gp/product/B000QECL4I{?copies}" ;
.
and then the definition of eg:reviews would say "the object of this property
provides reviews of the subject of this property" and the definition of
eg:order would say "POST to the URI generated by expanding the URI template
value of this property where the copies variable is the number of copies to
be ordered"
@dunse
dunse / prettycron.js
Created September 13, 2012 15:08
Script to produce human readable cron schedule
////////////////////////////////////////////////////////////////////////////////////
// prettycron.js - Copyright (c) 2012 Pehr Johansson <[email protected]>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
@wsargent
wsargent / docker_cheat.md
Last active June 29, 2024 19:32
Docker cheat sheet
@debasishg
debasishg / gist:8172796
Last active April 20, 2025 12:45
A collection of links for streaming algorithms and data structures

General Background and Overview

  1. Probabilistic Data Structures for Web Analytics and Data Mining : A great overview of the space of probabilistic data structures and how they are used in approximation algorithm implementation.
  2. Models and Issues in Data Stream Systems
  3. Philippe Flajolet’s contribution to streaming algorithms : A presentation by Jérémie Lumbroso that visits some of the hostorical perspectives and how it all began with Flajolet
  4. Approximate Frequency Counts over Data Streams by Gurmeet Singh Manku & Rajeev Motwani : One of the early papers on the subject.
  5. [Methods for Finding Frequent Items in Data Streams](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.187.9800&amp;rep=rep1&amp;t
@shrayasr
shrayasr / OLD_OLD_OLD_install_tmux_osx_no_brew.html
Last active July 17, 2023 14:45
[OBSOLETE] Install tmux on OSX WITHOUT brew
# Create a directory
mkdir ~/tmux-install
cd ~/tmux-install
# Get the files
curl -OL http://downloads.sourceforge.net/tmux/tmux-1.5.tar.gz
curl -OL http://downloads.sourceforge.net/project/levent/libevent/libevent-2.0/libevent-2.0.16-stable.tar.gz
# Extract them
tar xzf tmux-1.5.tar.gz
@conatus
conatus / ello.md
Last active April 13, 2023 19:32
Ello API

Ello API

This is a basic exploration of the Ello API. Completely unofficial, your mileage my vary, don't smash their servers as they are likely very busy.

Methods return HTML for their representation where appropriate which is a nice little pattern. Everything returns application/json.

Like this:

{
 "id": ,