Radoslav Stankov RStankov

Rough Notes about CQRS and ES

Once upon a time…

I once took notes (almost sentence by sentence with not much editing) about the architectural design concepts - Command and Query Responsibility Segregation (CQRS) and Event Sourcing (ES) - from a presentation of Greg Young and published it as a gist (with the times when a given sentence was heard).

I then found other summaries of the talk and the gist has since been growing up. See the revisions to know the changes and where they came from (aka the sources).

It seems inevitable to throw Domain Driven Design (DDD) in to the mix.

Updated for Rails 4.0.0+

Bower

Set up the bower gem.
Follow the Bower instructions and list your dependencies in your bower.json, e.g.
```
// bower.json
```

{

Generate the list yourself:

$ cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS*.sdk/System/Library/Frameworks/UIKit.framework/Headers
$ grep UI_APPEARANCE_SELECTOR ./*     | \
  sed 's/NS_AVAILABLE_IOS(.*)//g'     | \
  sed 's/NS_DEPRECATED_IOS(.*)//g'    | \
  sed 's/API_AVAILABLE(.*)//g'        | \
  sed 's/API_UNAVAILABLE(.*)//g'      | \
 sed 's/UI_APPEARANCE_SELECTOR//g' | \

	package main

	import (
	"encoding/json"
	"log"
	"net/http"
	"reflect"
	"time"

	"github.com/gorilla/context"

	$ = jQuery

	queues = {}
	running = false

	queue = (name) ->
	name = 'default' if name is true
	queues[name] or= []

	next = (name) ->

	$ = jQuery

	TRANSFORM_TYPES = ['PUT', 'POST', 'DELETE']

	$.activeTransforms = 0

	$(document).ajaxSend (e, xhr, settings) ->
	return unless settings.type in TRANSFORM_TYPES
	$.activeTransforms += 1

	// Taken from the commercial iOS PDF framework http://pspdfkit.com.
	// Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved.
	// Licensed under MIT (http://opensource.org/licenses/MIT)
	//
	// You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it.

	// PLEASE DUPE rdar://27192338 (https://openradar.appspot.com/27192338) if you would like to see this in UIKit.

	#import <objc/runtime.h>
	#import <objc/message.h>

	$VERBOSE = nil
	require File.expand_path('../rooby', __FILE__)


	Person = Rooby::Class.new 'Person' do
	define :initialize do \|name\|
	@name = name
	end

	define :name do

	#import <UIKit/UIKit.h>

	@interface UIView (SMFrameAdditions)

	@property (nonatomic, assign) CGPoint $origin;
	@property (nonatomic, assign) CGSize $size;
	@property (nonatomic, assign) CGFloat $x, $y, $width, $height; // normal rect properties
	@property (nonatomic, assign) CGFloat $left, $top, $right, $bottom; // these will stretch the rect

	@end