Krzysztof Maicher maicher

Caching in OfferProvider

Why? - To improve performance (that is not call db an each provider request).
Where? - At the point of fething data from OfferProvider component (repositories).
How? - By using Rails.cache#fetch

Why we don't like caching?

	- grafika
	- - konwertowanie obrazków pomiędzy formatami
	- - rodzaje kompresji, formaty obrazów i ich cechy (np że png waży więcej od jpg i dlaczego)
	- - popularne filtry
	- - cięcie layoutu - co to znaczy, jak się to robi
	- - czym się różni grafika wektorowa od rastrowej
	- - przeźroczyste tło w obrazkach (wady, zalety)
	- opensource i free software
	- - co to znaczy? na czym polega?
	- - popularne projekty opensource

	u = User.new(params)
	if u.save
	# redirect
	else
	# render form with errors
	end


	# task: Dodać sprawdzanie czy user jest fraudem.

	def new
	# initialize a hash from
	@inputs = Form.new(
	user_name: '',
	some_field: some_object.default_some_field,
	something: {
	a: '',
	b: 'some default value'
	}
	)

	def new
	# initialize a hash from
	@inputs = {
	user_name: '',
	some_field: some_object.default_some_field,
	something: {
	a: '',
	b: 'some default value'
	}
	}

	class CreateUser
	class Error < StandardError; end

	# ...
	end

	# contoller
	begin
	user = CreateUser.new(params).call
	p "User #{user.username} created succesfully"

	# Managing own fork

	### Configure upstream
	git remote -v
	git remote add upstream [email protected]:wimdu/wimdu.git

	### Syncing to upstream
	git checkout master
	git fetch upstream master
	git reset --hard upstream/master

	def print_translations(hash, phrase_key, i = 0)
	hash.each do \|k, v\|
	if v.is_a?(Hash)
	i.times { print ' ' }
	print "#{k.to_s.camelize(:lower)}: {\n";
	print_translations(v, "#{phrase_key}.#{k}", i + 1)
	i.times { print ' ' }
	print "},\n"
	else i.times { print ' ' }
	print "#{k.to_s.camelize(:lower)}: t('#{phrase_key}.#{k}'),\n"

	module Container
	# Initialized once (kind'a singleton)
	def self.a
	@a \|\|= Object.new
	end

	# Initialized every time.
	def self.b
	Object.new
	end