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intro.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no"/>
<meta name="HandheldFriendly" content="True"/>
<title>About Event Engine</title>
<link rel="shortcut icon" href="https://raw.githubusercontent.com/prooph/proophessor/gh-pages/images/ico/[email protected]">
<link rel="apple-touch-icon-precomposed" sizes="144x144" href="https://raw.githubusercontent.com/prooph/proophessor/gh-pages/images/ico/apple-touch-icon-144-precomposed.png">
<link rel="apple-touch-icon-precomposed" sizes="114x114" href="https://raw.githubusercontent.com/prooph/proophessor/gh-pages/images/ico/apple-touch-icon-114-precomposed.png">
<link rel="apple-touch-icon-precomposed" sizes="72x72" href="https://raw.githubusercontent.com/prooph/proophessor/gh-pages/images/ico/apple-touch-icon-72-precomposed.png">
<link rel="apple-touch-icon-precomposed" href="https://raw.githubusercontent.com/prooph/proophessor/gh-pages/images/ico/apple-touch-icon-57-precomposed.png">
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:site" content="@prooph_software">
<meta name="twitter:title" content="Event Engine">
<meta name="twitter:description" content="Rapid CQRS / ES framework for PHP with a path to refactor towards a richer domain model as needed.">
<meta name="twitter:image" content="https://event-engine.github.io/img/Event_Engine_intro.png">
<link rel="stylesheet"
href="https://maxcdn.bootstrapcdn.com/bootswatch/3.3.5/flatly/bootstrap.min.css">
<link rel="stylesheet"
href="https://tobiju.github.io/share/prismjs/prism-ghcolors.css"/>
<link rel="stylesheet"
href="https://tobiju.github.io/share/prismjs/prism-linenumbers.css"/>
<style>
body, html {
height: 100%;
padding-top: 36px;
position: relative;
}
img {
max-width: 100%;
}
code span {
white-space: nowrap;
}
code span.comment {
white-space: pre;
}
.highlight {
background: #FFFF88;
}
.page-wrapper {
min-height: 100%;
padding-bottom: 170px;
position: relative;
}
.box-header {
position: relative;
}
/* Header Section */
header {
background: white;
color: black;
font-size: 16px;
font-weight: 300;
}
h1:first-child {
margin-top: 0;
}
/* anchor link will be displayed after the static top nav */
h1:before,
h2:before,
h3:before,
h4:before,
h5:before,
h6:before {
display: block;
content: " ";
margin-top: -64px;
height: 64px;
visibility: hidden;
}
.navbar-brand {
padding: 0;
}
.navbar-brand img {
max-height: 100%;
}
/* Content Section */
#content {
margin-bottom: 17px;
font-size: 17px;
min-height: 200px;
}
.breadcrumb {
position: relative;
z-index: 999;
}
.links {
background: #f8f8f8;
border-top: 1px solid #e5e5e5;
border-bottom: 1px solid #e5e5e5;
padding: 16px 0;
}
.links .prev {
text-align: left;
}
.links .parent {
text-align: center;
}
.links .next {
text-align: right;
}
/* Search */
.form-search {
position: absolute;
right: 0;
top: 0;
z-index: 999;
}
@media (max-width: 767px) {
.form-search {
position: relative;
margin-top: 0;
}
}
.form-search .form-control {
border: 0;
width: 80px;
}
@media (max-width: 767px) {
.form-search .form-control {
width: 100% !important;
}
}
.form-search .list-search-results {
position: relative;
}
.form-search .list-search-results ul {
background: #eee;
border: 1px solid inherit;
list-style: none;
max-height: 300px;
overflow: auto;
padding: 0;
position: absolute;
width: 100%;
z-index: 999;
}
.form-search .list-search-results ul li:nth-child(even) {
background: rgba(255, 255, 255, 0.3)
}
.form-search .list-search-results ul li.selected {
background: #ccc;
}
.form-search .list-search-results ul li a {
display: block;
padding: 4px 8px;
}
/* TOC */
.list-toc {
padding: 0;
}
.list-toc .list-group-item {
background: 0 none;
position: relative;
font-weight: bold;
padding: 0;
margin: 0;
}
.list-toc li .text-number {
padding-left: 20px;
}
.list-toc li li .text-number {
padding-left: 40px;
}
.list-toc li li li .text-number {
padding-left: 60px;
}
.list-toc li li li li .text-number {
padding-left: 80px;
}
.list-toc li li li li li .text-number {
padding-left: 100px;
}
.list-toc .text-number {
padding-left: 100px;
}
.list-toc .list-group-item .row {
padding: 7px 0 7px;
}
.list-toc .list-group-item .bbt-toc-toggle {
display: block;
position: absolute;
top: 5px;
right: 10px;
font-weight: normal;
}
.list-toc .list-group-item .bbt-toc-toggle:before {
content: "";
display: block;
}
.list-toc .list-group-item .bbt-toc-toggle.collapsed:before {
content: "";
display: block;
}
.list-toc > li:nth-child(2n+1) {
background: rgba(0, 0, 0, 0.03);
}
.bbt-theme-cyborg .list-toc > li:nth-child(2n+1),
.bbt-theme-darkly .list-toc > li:nth-child(2n+1),
.bbt-theme-slate .list-toc > li:nth-child(2n+1),
.bbt-theme-superhero .list-toc > li:nth-child(2n+1) {
background: rgba(255, 255, 255, 0.05);
}
.list-toc .list-group-item {
border-bottom: 0 none;
border-left: 0 none;
border-right: 0 none;
font-size: inherit;
}
.list-toc .list-group-item:first-child {
border-top-right-radius: 0;
border-top-left-radius: 0;
}
.list-toc .list-group-item:last-child {
border-bottom-right-radius: 0;
border-bottom-left-radius: 0;
}
/* Left navigation */
.nav-left ul li a {
padding-top: 3px;
padding-bottom: 3px;
border-left: 1px solid transparent;
}
.nav-left ul li.active a,
.nav-left ul li a:hover {
background: none !important;
color: inherit;
border-color: inherit;
}
.navbar-top {
position: relative;
}
.affix {
top: 60px;
}
.badge {
border-radius: 4px;
padding: 5px;
}
/* Footer Section */
footer {
color: black;
background: white;
width: 100%;
position: absolute;
bottom: 0;
}
footer #copyright {
padding: 30px;
text-align: center;
color: #444;
}
footer #copyright p {
margin: 0;
}
footer #copyright span a {
color: white;
}
/* Top Navigation */
@media (max-width: 767px) {
ul.navbar-nav {
margin: 0 -15px
}
ul.navbar-nav li {
border-radius: 0;
}
ul.navbar-nav li ul {
background: rgba(255, 255, 255, 0.2);
border: none;
border-radius: 0;
box-shadow: none;
display: block;
float: none;
left: auto;
padding: 0;
position: static;
}
ul.navbar-nav li ul li a {
padding: 8px 30px;
}
ul.navbar-nav li ul li ul li a {
padding: 6px 40px;
}
}
@media (min-width: 768px) {
ul.navbar-nav li {
display: block;
position: relative;
float: left;
}
ul.navbar-nav li ul {
display: none;
}
ul.navbar-nav li a {
display: block;
}
ul.navbar-nav li:hover > ul {
display: block;
position: absolute;
}
ul.navbar-nav li:hover li {
float: none;
}
ul.navbar-nav ul ul {
left: 100%;
top: 0;
}
}
</style>
<style>
body {
font-size: 16px;
}
/* Header Section */
header {
font-size: 17px;
font-weight: 400;
}
a {
color: #04A1B0;
}
a:hover, a:active {
color: #07BDF1;
text-decoration: none;
}
.dropdown-menu {
font-size: 17px;
}
.prooph-logo {
float: left;
margin-left: 8px;
margin-right: 8px;
transition-timing-function: ease-in-out;
transition: all 5s;
height: 50px;
padding: 5px;
}
.jumbotron {
background-color: #04A1B0;
margin-top: 60px;
}
.jumbotron .display-1 {
color: white;
}
.jumbotron .display-2 {
color: white;
}
.jumbotron pre {
display: block;
color: #f8f8f2;
font-size: 13px;
margin-top: 60px;
border-radius: 0;
border: none;
background: #272822;
padding: 1em;
padding-bottom: 0px;
overflow: auto;
text-shadow: 0 1px rgba(0,0,0,0.3);
font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
text-align: left;
white-space: pre;
word-spacing: normal;
word-break: normal;
word-wrap: normal;
line-height: 1.5;
-moz-tab-size: 4;
-o-tab-size: 4;
tab-size: 4;
-webkit-hyphens: none;
-moz-hyphens: none;
-ms-hyphens: none;
hyphens: none;
}
.jumbotron pre.line-numbers {
position: relative;
padding-left: 3.8em;
counter-reset: linenumber;
}
.jumbotron pre code {
color: white;
margin-left: -80px;
}
h2.front {
text-align: center;
font-size: 56px;
margin-top: 100px;
padding: 20px;
}
.intro {
margin-top: 30px;
font-size: 24px;
font-weight: 200;
}
.intro.sub-intro {
margin-top: 15px;
margin-bottom: 15px;
}
.flavour {
height: 200px;
}
.flavour h3 {
color: white;
font-size: 30px;
}
.flavour h3 small {
color: #f2f2f2;
font-size: 20px;
}
.flavour.prototyping {
background-color: #CC3340;
}
.flavour.functional {
background-color: #EB6842;
}
.flavour.oop {
background-color: #715671;
}
.flavour.mixed {
background-color: #26896C;
}
.btn-get-started {
background-color: #04A1B0;
color: white;
padding: 20px 26px;
font-size: 35px;
border-radius: 8px;
width: 100%;
-webkit-transition-duration: 0.4s; /* Safari */
transition-duration: 0.4s;
}
.btn-get-started:hover {
background-color: #04c8d7;
color: white;
margin-top: 0px;
}
.img-center {
display: block;
margin-left: auto;
margin-right: auto;
width: 50%;
}
#forkongithub a {
background: #000;
color: #fff;
text-decoration: none;
font-family: arial, sans-serif;
text-align: center;
font-weight: bold;
padding: 5px 40px;
font-size: 1rem;
line-height: 2rem;
position: relative;
transition: 0.5s;
}
#forkongithub a:hover {
background: #04c8d7;
color: #fff;
}
#forkongithub a::before, #forkongithub a::after {
content: "";
width: 100%;
display: block;
position: absolute;
top: 1px;
left: 0;
height: 1px;
background: #fff;
}
#forkongithub a::after {
bottom: 1px;
top: auto;
}
.first-row {
margin-top: 30px;
}
@media screen and (min-width: 800px) {
#forkongithub {
position: fixed;
display: block;
top: 0;
right: 0;
width: 200px;
overflow: hidden;
height: 200px;
z-index: 1000;
}
#forkongithub a {
width: 200px;
position: absolute;
top: 85px;
right: -60px;
transform: rotate(45deg);
-webkit-transform: rotate(45deg);
-ms-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-o-transform: rotate(45deg);
box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.8);
}
}
@media screen and (max-width: 799px) {
.first-row {
margin-top: 80px;
}
}
@media screen and (max-width: 991px) {
.jumbotron pre {
display: none;
}
.flavour {
margin-top: 60px;
}
}
.navbar-default {
background-color: rgb(0,63,105);
}
.navbar-front {
background-color: rgb(243, 243, 243);
}
.navbar-default .navbar-nav>li>a:hover {
color: #04A1B0;
text-decoration: none;
}
.alert {
border-width: 0 0 0 4px;
background-color: transparent;
color: inherit;
}
.alert-light {
border-color: #715671;
color: #818182;
background-color: #fefefe;
}
.alert-dark {
color: #1b1e21;
background-color: #d6d8d9;
border-color: #c6c8ca;
}
.alert-info {
border-color: #04A1B0;
}
.alert-warning {
border-color: #EB6842;
}
.alert-danger {
border-color: #CC3340;
}
.alert-success {
border-color: #26896C;
}
.alert .alert-link {
color: #04A1B0;
text-decoration: none;
}
.alert .alert-link:hover, .alert .alert-link:active {
color: #07BDF1;
text-decoration: none;
}
.alert.alert-important {
border-width: 0 1px 4px 1px;
background-color: #CC3340;
color: #fff;
}
.alert.alert-important .alert-link {
color: #ffffff;
text-decoration: underline;
}
.alert.alert-important .alert-link:hover, .alert .alert-link:active {
color: #ee374b;
text-decoration: underline;
}
.list-toc > li:nth-child(2n+1) {
background: none;
}
.list-toc .list-group-item:hover {
background-color: rgba(0, 0, 0, 0.03);
}
</style>
</head>
<body data-spy="scroll" data-target="#sideNav" data-offset="50" class="bbt-theme-flatly">
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<div id="section-main"><h1 id="1">About Event Engine</h1>
<p>Prooph Event Engine takes away all the boring, time consuming parts of event sourcing to speed up
development of event sourced applications and increase the fun. It can be used for prototypes as well as full featured applications.</p>
<h2 id="1-1">Origin</h2>
<p>Event Engine was originally designed as a "workshop framework" for CQRS and Event Sourcing and is inspired by the <strong>Dreyfus model</strong>.</p>
<h3 id="1-1-1">Beginner friendly</h3>
<blockquote>
<p>The Dreyfus model distinguishes five levels of competence, from novice to mastery. At the absolute beginner level people execute tasks based on “rigid adherence to taught rules or plans”. Beginners need recipes. They don’t need a list of parts, or a dozen different ways to do the same thing. Instead what works are step by step instructions that they can internalize. As they practice them over time they learn the reasoning behind them, and learn to deviate from them and improvise, but they first need to feel like they’re doing something.</p>
</blockquote>
<p>(source: <a href="https://lambdaisland.com/blog/25-05-2017-simple-and-happy-is-clojure-dying-and-what-has-ruby-got-to-do-with-it">https://lambdaisland.com/blog/25-05-2017-simple-and-happy-is-clojure-dying-and-what-has-ruby-got-to-do-with-it</a>)</p>
<h3 id="1-1-2">Rapid Application Development</h3>
<p>It turned out that Event Engine is not only a very good CQRS and Event Sourcing learning framework but that the same concept
can be used for rapid application development (RAD). RAD frameworks focus on developer happiness and coding speed.
Both can be achieved by using conventions, which allow the framework to do a lot of work "under the hood"
Developers can focus on the important part: <strong>developing the application</strong>.</p>
<h2 id="1-2">Event Engine Flavours</h2>
<p>Event Engine Flavours make it possible to turn a rapidly developed prototype into a rock solid application.
You can switch from the default <strong>PrototypingFlavour</strong> to either the <strong>FunctionalFlavour</strong> or <strong>OopFlavour</strong>. Finally, you can implement your own
Flavour to build your very own CQRS / ES framework.</p>
<p><a href="/tutorial/">Learn More</a></p>
<h2 id="1-3">Pros</h2>
<ul>
<li>Developed and maintained by prooph core team members</li>
<li>Ready-to-use <a href="https://github.com/event-engine/php-engine-skeleton">skeleton</a>
</li>
<li>Less code to write</li>
<li>Guided event sourcing</li>
<li>extension points to inject custom logic</li>
<li>Audit log from day one (no data loss)</li>
<li>Multi-Model-Store</li>
<li>Replay functionality</li>
<li>Projections based on domain events</li>
<li>PSR friendly http message box</li>
<li>OpenAPI v3 Swagger integration</li>
</ul>
<h2 id="1-4">Cons</h2>
<ul>
<li>Not suitable for monolithic architectures</li>
</ul>
<h3 id="1-4-1">You may want to use Event Engine if:</h3>
<ul>
<li>Your project is in an early stage and you need to try out different ideas or <strong>deliver features very fast</strong>
</li>
<li>You want to establish a <strong>Microservices architecture</strong> rather than building a monolithic system</li>
<li>You want to automate business processes</li>
<li>You have to develop a workflow-oriented service</li>
<li>You're <strong>new to the concepts</strong> of CQRS and Event Sourcing and want to learn them</li>
</ul>
<h2 id="1-5">Conclusion</h2>
<p>Try the <a href="/tutorial/">tutorial</a> and build a prototype with Event Engine!</p>
<h2 id="1-6">Powered By</h2>
<p><a href="http://prooph.de"><img src="https://github.com/codeliner/php-ddd-cargo-sample/raw/master/docs/assets/prooph-software-logo.png" alt="prooph software"></a></p>
<p>Event Engine is maintained by the <a href="http://prooph-software.de/">prooph software team</a>.
Prooph software offers commercial support and workshops for Event Engine as well as for the <a href="http://getprooph.org/">prooph components</a>.</p>
<p>If you are interested please <a href="http://getprooph.org/#get-in-touch">get in touch</a></p>
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