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@subelsky
subelsky / large_redshift_tables.sql
Created April 18, 2014 17:39
Quick SQL command to find large tables in redshift
-- based on http://stackoverflow.com/questions/21767780/how-to-find-size-of-database-schema-table-in-redshift
SELECT name AS table_name, ROUND((COUNT(*) / 1024.0),2) as "Size in Gigabytes"
FROM stv_blocklist
INNER JOIN
(SELECT DISTINCT id, name FROM stv_tbl_perm) names
ON names.id = stv_blocklist.tbl
GROUP BY name
ORDER BY "Size in Gigabytes" DESC
@subudeepak
subudeepak / WebSockets.md
Last active June 3, 2026 23:23
The problems and some security implications of websockets - Cross-site WebSockets Scripting (XSWS)

WebSockets - An Introduction

WebSockets is a modern HTML5 standard which makes communication between client and server a lot more simpler than ever. We are all familiar with the technology of sockets. Sockets have been fundamental to network communication for a long time but usually the communication over the browser has been restricted. The general restrictions

  • The server used to have a permanent listener while the client (aka browser) was not designated any fixed listener for a more long term connection. Hence, every communication was restricted to the client demanding and the server responding.
  • This meant that unless the client requested for a particular resource, the server was unable to push such a resource to the client.
  • This was detrimental since the client is then forced to check with the server at regular intervals. This meant a lot of libraries focused on optimizing asynchronous calls and identifying the response of asynchronous calls. Notably t
@briandailey
briandailey / gist:8288191
Created January 6, 2014 19:20
Updating Heroku to Postgres 9.3
# https://github.com/heroku/heroku-pg-extras#pgbackupstransfer
# create a url
heroku addons:add heroku-postgresql:standard-yanari
heroku pg:wait
heroku pgbackups:transfer [oldbcolor] [newdbcolor]
@gdvalle
gdvalle / putty-monokai.reg
Created December 2, 2012 05:24
Monokai style theme for PuTTY; colors copied from ST2's theme
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\SimonTatham\PuTTY\Sessions\monokai]
"Colour21"="255,255,255"
"Colour20"="245,222,179"
"Colour19"="200,240,240"
"Colour18"="0,217,217"
"Colour17"="179,146,239"
"Colour16"="174,129,255"
"Colour15"="122,204,218"
@robinsloan
robinsloan / langoliers.rb
Last active December 3, 2025 18:13
The Langoliers, a tweet deletion script
require "rubygems"
require "twitter"
require "json"
# things you must configure
TWITTER_USER = "your_username"
MAX_AGE_IN_DAYS = 1 # anything older than this is deleted
# get these from dev.twitter.com
CONSUMER_KEY = "your_consumer_key"
@rolo
rolo / gist:1481128
Created December 15, 2011 13:44
Install Postgres 9.1, PostGIS and create PostGIS template on Ubuntu 11.10 Oneiric Ocelot
#!/bin/bash
#
# Install Postgres 9.1, PostGIS and create PostGIS template on a clean Ubuntu 11.10 Oneiric Ocelot box
# http://wildfish.com
# add the ubuntu gis ppa
sudo apt-get -y install python-software-properties
sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable
sudo apt-get update