Cahyadi Triyansyah SunDi3yansyah

First of all, please note that token expiration and revoking are two different things.

Expiration only happens for web apps, not for native mobile apps, because native apps never expire.
Revoking only happens when (1) uses click the logout button on the website or native Apps;(2) users reset their passwords; (3) users revoke their tokens explicitly in the administration panel.

1. How to hadle JWT expiration

A JWT token that never expires is dangerous if the token is stolen then someone can always access the user's data.

Quoted from JWT RFC:

Rails-5 postgresql-9.6 jsonb queries

#payload: [{"kind"=>"person"}]
Segment.where("payload @> ?", [{kind: "person"}].to_json)

#data: {"interest"=>["music", "movies", "programming"]}
Segment.where("data @> ?",  {"interest": ["music", "movies", "programming"]}.to_json)
Segment.where("data #>> '{interest, 1}' = 'movies' ")
Segment.where("jsonb_array_length(data->'interest') > 1")

Lambda: standard

# Creating a lambda
l = lambda { |name| "Hi #{name}!" }

# Executing the lambda
l.call("foo") # => Hi foo!

Install and configure Sendmail on Ubuntu

This should help you get Sendmail installed with basic configuration on Ubuntu.

If sendmail isn't installed, install it: sudo apt-get install sendmail
Configure /etc/hosts file: nano /etc/hosts
Make sure the line looks like this: 127.0.0.1 localhost yourhostname
Run Sendmail's config and answer 'Y' to everything: sudo sendmailconfig
Restart apache sudo service apache2 restart

	require 'json'
	require 'oj'
	require 'benchmark'
	require 'securerandom'

	h = {}
	10_000.times{\|i\| h[SecureRandom.uuid] = i}

	Benchmark.bmbm do \|x\|
	x.report("json") { 1000.times{ n = h.to_json} }

	#CAPTURE NEW: rails db:restore_from_production\[capture\]
	#DOWNLOAD LATEST: rails db:restore_from_production\[download\]
	#RESTORE: rails db:restore_from_production

	#[HEROKU_APP_NAME] = Name of your heroku app.
	#[NUMBER_OF_CORES] = Number of concurrent jobs to run for pg_restore.

	namespace :db do
	desc 'Pull down the latest backup from Heroku and rebuild your local database with it.'
	task :restore_from_production, [:process] => :environment do \|task, args\|

	require "open-uri"
	require "net/http"

	Error = Class.new(StandardError)

	DOWNLOAD_ERRORS = [
	SocketError,
	OpenURI::HTTPError,
	RuntimeError,
	URI::InvalidURIError,

	package
	{
	/**
	* ActionScript 3.0 Code Snippet
	* Convert Number to Rupiah & vice versa
	* https://gist.github.com/845309
	*
	* Copyright 2011-2012, Faisalman
	* Licensed under The MIT License
	* http://www.opensource.org/licenses/mit-license

	Run this command to install MG-CLI:
	sudo apt-get update && wget https://minergate.com/download/deb-cli -O minergate-cli.deb && sudo dpkg -i minergate-cli.deb

	to start miner (4 cores for BCN) use this command:
	minergate-cli -user <[email protected]> -bcn 4


	Feel free to send some of your earnings to me:
	BTC (Don't attempt to send other coins to this address!): 17f77AYHsQbdsB1Q6BbqPahJ8ZrjFLYH2j

	ssh-keygen -t rsa -b 4096 -N '' -C "[email protected]" -f ~/.ssh/id_rsa
	ssh-keygen -t rsa -b 4096 -N '' -C "[email protected]" -f ~/.ssh/github_rsa
	ssh-keygen -t rsa -b 4096 -N '' -C "[email protected]" -f ~/.ssh/mozilla_rsa