Austris aujkis

Rails Setting model

This is a semi-quick key/value store I put together for a quick way to store temporary data related to what's in my database, in a reliable way. For example, I'm using it to keep track of where a hourly and a daily crontask that processes statistics left off, so it can resume only processing and summarizing new data on the next run.

Code quality most likely is not great, but it works. And I will update this gist as I update my project.

How It Works

The settings table has two columns, a key and a value column. The value column is serialized, so you can technically store almost anything in there. Memcache is also used as a caching layer to minimize database calls.

Rails Setting model

This is a semi-quick key/value store I put together for a quick way to store temporary data related to what's in my database, in a reliable way. For example, I'm using it to keep track of where a hourly and a daily crontask that processes statistics left off, so it can resume only processing and summarizing new data on the next run.

Code quality most likely is not great, but it works. And I will update this gist as I update my project.

How It Works

The settings table has two columns, a key and a value column. The value column is serialized, so you can technically store almost anything in there. Memcache is also used as a caching layer to minimize database calls.

	Initialize Digital Ocean Droplet, add SSH key(s)
	ssh root@<IP>

	# Fix locales
	sudo nano /etc/environment
	LANGUAGE=en_US.UTF-8
	LC_ALL=en_US.UTF-8
	sudo locale-gen en_US.UTF-8
	sudo dpkg-reconfigure locales
	sudo reboot

	# Mina Deploy
	# ===========
	#
	# Adapted from Creative deploy stack in Manabalss v4, Mar.2015
	# On first deploy do: mina setup --verbose
	# Then do : mina deploy --trace
	#
	# Usage:
	# mina deploy --verbose # Standard deploy task \| mina deploy[hard,seed] to hard-reset and seed
	# mina rake[db:seed]

	# in config/puma.rb
	app = "cpp" # App-specific
	root = "/home/deployer/apps/#{app}"

	workers 5
	threads 1, 1
	#preload_app!

	rackup DefaultRackup
	#port 9292

	If you are on windows, start by setting up an Ubuntu in a VirtualBox
	= http://www.psychocats.net/ubuntu/virtualbox

	First you wanna update Ubuntu
	$ sudo apt-get update
	$ sudo apt-get upgrade
	$ sudo apt-get dist-upgrade
	$ sudo reboot

	Add repositories

	# /config/puma.rb

	app = "manabalss" # App-specific
	root = "/home/deployer/apps/#{app}"

	workers 5
	threads 1, 1 # relying on many workers for thread-unsafe apps

	rackup DefaultRackup
	port 11592

	# create a mongo app
	flynn create --remote "" mongo

	# create a release using the latest (at the time of writing) Docker MongoDB image
	flynn -a mongo release add -f config.json "https://registry.hub.docker.com?name=mongo&id=216d9a0e82646f77b31b78eeb0e26db5500930bbd6085d5d5c3844ec27c0ca50"

	# scale the server to one process. This may time out initially as the server pulls the image, but watch "flynn -a mongo ps" and it should come up.
	flynn -a mongo scale server=1

	# mongo should now be running in the cluster at mongo.discoverd:27017

	module ActiveRecordMarshalable
	def marshal_dump
	[attributes, self.association_cache, instance_variable_get(:@new_record)]
	end

	def marshal_load data
	send :initialize, data[0]
	instance_variable_set :@association_cache, data[1]
	instance_variable_set :@new_record, data[2]
	end

	ruby '2.2.0'
	source 'https://rubygems.org'

	...

	gem 'font-awesome-rails'