Won Jun Bae wonjun27

## Scaling Cronjobs
Scalr

http://highscalability.com/blog/2010/3/22/7-secrets-to-successfully-scaling-with-scalr-on-amazon-by-se.html
http://stackoverflow.com/questions/10061843/how-to-convert-linux-cron-jobs-to-the-amazon-way

Cron Jobs Are Hard To Distribute

Watch out when scaling out instances with cron jobs on them. Cron jobs aren't designed for the cloud. If the machine image holding your cron job scales out to 20 instances, your cron job will be executed 20 times more often.

This is fine if the scope of your cron job is limited to the instance itself, but if the scope is larger, the above becomes a serious problem. And if you single out a machine to run those cron jobs, you run the risk of not having it executed if that machine goes down.

## gist:11e6a0141ae8bf1c4b2a27160a5fa10f
<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0" xmlns:media="http://search.yahoo.com/mrss/" xmlns:mi="http://schemas.ingestion.microsoft.com/common/"><channel><title><![CDATA[Publishing Dev Site HTML TITLE]]></title><description><![CDATA[Pub Dev Site is a place where the Publishing x Platform team at The Arena Group can test things.]]></description><link>https://www.publishingdevesite.com</link><image><url>https://www.publishingdevesite.com/site/images/apple-touch-icon.png</url><title>Publishing Dev Site HTML TITLE</title><link>https://www.publishingdevesite.com</link></image><generator>Tempest</generator><lastBuildDate>Tue, 25 Jul 2023 16:55:03 GMT</lastBuildDate><atom:link href="https://pubdev.localhost:9001/.rss/full/?feature=use-syndication-service:on" rel="self" type="application/rss+xml"/><pubDate>Tue, 25 Jul 2023 16:55:03 GMT</pubDate><copyright><![CDATA

## Leaderboard Using Redis
Leaderboard Using Redis

http://labs.strava.com/blog/koms-powered-by-redis/
Strava KOMS, Powered by Redis
----------------

http://aimeeault.com/2014/06/22/making-the-most-of-redis-and-sorted-sets/

For example, what if I only want to see a leaderboard of members who are between the ages of 18 and 49? The Sorted Set contains no information on how old each member is. And I don’t want to maintain a separate Redis Sorted Set for just these users, because that’s kind of redundant, right? You probably don’t want to fetch every single one of the potentially hundreds of thousands of records and filter individually… that’s not very efficient! There’s a couple of ways you could approach this with Redis. One is by way of Lua scripting with use of EVAL (which runs Lua) and ZSCAN (which can be used for matching keys and values by rules, similar to regular expressions).

## aws_autoscaling_cron.rb
#!/usr/bin/env ruby
require 'syslog'
require 'net/http'
require 'aws-sdk'

Syslog.open

AWS.config({
:access_key_id => '<iam user key>',
:secret_access_key => '<iam user secret>'

## bash_aliases.sh
# remove specified host from /etc/hosts
function removehost() {
    if [[ "$1" ]]
    then
        HOSTNAME=$1

        if [ -n "$(grep $HOSTNAME /etc/hosts)" ]
        then
            echo "$HOSTNAME Found in your /etc/hosts, Removing now...";
            sudo sed -i".bak" "/$HOSTNAME/d" /etc/hosts

## Dockerfile
# Example Dockerfile
FROM hello-world

## markdown-to-pdf.txt
$ brew install markdown htmldoc
$ markdown <file.md> | htmldoc --cont --headfootsize 8.0 --linkcolor blue --linkstyle plain --format pdf14 - > <file.pdf>

## bbs.js
/**
 * Requires node v0.7.7 or greater.
 *
 * To connect: $ curl -sSNT. localhost:8000
 */

var http = require('http')
  , repl = require('repl')
  , buf0 = new Buffer([0])

## repl-client.js
var net = require('net')

var sock = net.connect(1337)

process.stdin.pipe(sock)
sock.pipe(process.stdout)

sock.on('connect', function () {
  process.stdin.resume();
  process.stdin.setRawMode(true)

## FITC 2015 Toronto
TypeScript for Angular 2.0
Service Worker vs UI Threads
---------
Disposable and Repeatable: Dev and Test Environments with Terraform‏
Terraform is a tool for automating and managing your physical and virtual servers, containers, DNS, and other resources. Start using it early to streamline your development and testing process, and reap the benefits as you move into production.

We’ll go through a few ways to apply the “Infrastructure as code” concept to your daily routine, and how Terraform can help you get there.

Sean Swehla
digital ocean - droplet compute team
	Scalr

	http://highscalability.com/blog/2010/3/22/7-secrets-to-successfully-scaling-with-scalr-on-amazon-by-se.html
	http://stackoverflow.com/questions/10061843/how-to-convert-linux-cron-jobs-to-the-amazon-way

	Cron Jobs Are Hard To Distribute

	Watch out when scaling out instances with cron jobs on them. Cron jobs aren't designed for the cloud. If the machine image holding your cron job scales out to 20 instances, your cron job will be executed 20 times more often.

	This is fine if the scope of your cron job is limited to the instance itself, but if the scope is larger, the above becomes a serious problem. And if you single out a machine to run those cron jobs, you run the risk of not having it executed if that machine goes down.
	Leaderboard Using Redis

	http://labs.strava.com/blog/koms-powered-by-redis/
	Strava KOMS, Powered by Redis
	----------------

	http://aimeeault.com/2014/06/22/making-the-most-of-redis-and-sorted-sets/

	For example, what if I only want to see a leaderboard of members who are between the ages of 18 and 49? The Sorted Set contains no information on how old each member is. And I don’t want to maintain a separate Redis Sorted Set for just these users, because that’s kind of redundant, right? You probably don’t want to fetch every single one of the potentially hundreds of thousands of records and filter individually… that’s not very efficient! There’s a couple of ways you could approach this with Redis. One is by way of Lua scripting with use of EVAL (which runs Lua) and ZSCAN (which can be used for matching keys and values by rules, similar to regular expressions).
	#!/usr/bin/env ruby
	require 'syslog'
	require 'net/http'
	require 'aws-sdk'

	Syslog.open

	AWS.config({
	:access_key_id => '<iam user key>',
	:secret_access_key => '<iam user secret>'
	# remove specified host from /etc/hosts
	function removehost() {
	if [[ "$1" ]]
	then
	HOSTNAME=$1

	if [ -n "$(grep $HOSTNAME /etc/hosts)" ]
	then
	echo "$HOSTNAME Found in your /etc/hosts, Removing now...";
	sudo sed -i".bak" "/$HOSTNAME/d" /etc/hosts
	$ brew install markdown htmldoc
	$ markdown <file.md> \| htmldoc --cont --headfootsize 8.0 --linkcolor blue --linkstyle plain --format pdf14 - > <file.pdf>
	/**
	* Requires node v0.7.7 or greater.
	*
	* To connect: $ curl -sSNT. localhost:8000
	*/

	var http = require('http')
	, repl = require('repl')
	, buf0 = new Buffer([0])
	var net = require('net')

	var sock = net.connect(1337)

	process.stdin.pipe(sock)
	sock.pipe(process.stdout)

	sock.on('connect', function () {
	process.stdin.resume();
	process.stdin.setRawMode(true)
	TypeScript for Angular 2.0
	Service Worker vs UI Threads
	---------
	Disposable and Repeatable: Dev and Test Environments with Terraform‏
	Terraform is a tool for automating and managing your physical and virtual servers, containers, DNS, and other resources. Start using it early to streamline your development and testing process, and reap the benefits as you move into production.

	We’ll go through a few ways to apply the “Infrastructure as code” concept to your daily routine, and how Terraform can help you get there.

	Sean Swehla
	digital ocean - droplet compute team