blob: 9ae8f85ef6117733b3a6a7938a24307187da77d4 [file] [log] [blame]
<!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">
<meta name="description" content="Version 0.9.0 of Eclipse Ditto, released on 10.07.2019">
<meta name="keywords" content="release_notes, release notes, announcements, changelog">
<title> Release notes 0.9.0 • Eclipse Ditto • a digital twin framework</title>
<link rel="stylesheet" href="css/syntax.css">
<link rel="stylesheet" type="text/css" href="//cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" crossorigin="anonymous">
<link rel="stylesheet" href="css/modern-business.css">
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" crossorigin="anonymous">
<link rel="stylesheet" href="css/customstyles.css">
<link rel="stylesheet" href="css/boxshadowproperties.css">
<link rel="stylesheet" href="css/theme-ditto.css">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans:400,700|Source+Code+Pro:300,600|Titillium+Web:400,600,700">
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js" crossorigin="anonymous"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js" crossorigin="anonymous"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/anchor-js/2.0.0/anchor.min.js" crossorigin="anonymous"></script>
<script src="js/toc.js"></script>
<script src="js/customscripts.js"></script>
<script type="application/ld+json">
{
"@context": "http://schema.org",
"@type": "Organization",
"url": "https://eclipse.org/ditto/",
"logo": "https://eclipse.org/ditto/images/ditto.svg"
}
</script>
<link rel="icon" type="image/png" href="images/favicon-16x16.png" sizes="16x16">
<link rel="icon" type="image/png" href="images/favicon-32x32.png" sizes="32x32">
<link rel="icon" type="image/png" href="images/favicon-96x96.png" sizes="96x96">
<link rel="alternate" type="application/rss+xml" title="Eclipse Ditto Blog" href="https://www.eclipse.org/ditto/feed.xml">
<!-- Eclipse Foundation cookie consent: -->
<link rel="stylesheet" type="text/css" href="//www.eclipse.org/eclipse.org-common/themes/solstice/public/stylesheets/vendor/cookieconsent/cookieconsent.min.css" />
<script src="//www.eclipse.org/eclipse.org-common/themes/solstice/public/javascript/vendor/cookieconsent/default.min.js"></script>
<script>
$(document).ready(function() {
$("#tg-sb-link").click(function() {
$("#tg-sb-sidebar").toggle();
$("#tg-sb-content").toggleClass('col-md-9');
$("#tg-sb-content").toggleClass('col-md-12');
$("#tg-sb-icon").toggleClass('fa-toggle-on');
$("#tg-sb-icon").toggleClass('fa-toggle-off');
});
});
</script>
</head>
<script>
(function(w,d,s,l,i){
w[l]=w[l]||[];
w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});
var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),
dl=l!='dataLayer'?'&l='+l:'';
j.async=true;
j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;
f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','GTM-5WLCZXC');
</script>
<body>
<!-- Navigation -->
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container topnavlinks">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-ditto-home" href="index.html">&nbsp;<img src="images/ditto_allwhite_symbolonly.svg" class="ditto-navbar-symbol" alt="Home"> <img src="images/ditto_allwhite_textonly.svg" class="ditto-navbar-symbol-text" alt="Ditto"></a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav navbar-right">
<!-- toggle sidebar button -->
<!--<li><a id="tg-sb-link" href="#"><i id="tg-sb-icon" class="fa fa-toggle-on"></i> Nav</a></li>-->
<!-- entries without drop-downs appear here -->
<li><a href="blog.html">Blog</a></li>
<li><a href="intro-overview.html">Documentation</a></li>
<li><a href="http-api-doc.html">HTTP API</a></li>
<li><a href="https://ditto.eclipse.org" target="_blank">Sandbox</a></li>
<li><a href="https://github.com/eclipse/ditto" target="_blank">GitHub</a></li>
<li><a href="https://github.com/eclipse/ditto-examples" target="_blank">GitHub examples</a></li>
<!-- entries with drop-downs appear here -->
<!-- conditional logic to control which topnav appears for the audience defined in the configuration file.-->
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Links<b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="https://projects.eclipse.org/projects/iot.ditto" target="_blank">Eclipse Ditto Project</a></li>
<li><a href="https://www.eclipse.org/forums/index.php/f/364/" target="_blank">Forum</a></li>
<li><a href="https://ci.eclipse.org/ditto/" target="_blank">Jenkins</a></li>
<li><a href="https://dev.eclipse.org/mhonarc/lists/ditto-dev/" target="_blank">Mailing list archives</a></li>
<li><a href="https://gitter.im/eclipse/ditto" target="_blank">Gitter.im chat</a></li>
</ul>
</li>
<!--comment out this block if you want to hide search-->
<li>
<!--start search-->
<div id="search-demo-container">
<input type="text" id="search-input" placeholder="search...">
<ul id="results-container"></ul>
</div>
<script src="//cdnjs.cloudflare.com/ajax/libs/simple-jekyll-search/0.0.9/jekyll-search.js" type="text/javascript"></script>
<script type="text/javascript">
SimpleJekyllSearch.init({
searchInput: document.getElementById('search-input'),
resultsContainer: document.getElementById('results-container'),
dataSource: 'search.json',
searchResultTemplate: '<li><a href="{url}" title="Release notes 0.9.0">{title}</a></li>',
noResultsText: 'No results found.',
limit: 10,
fuzzy: true,
})
</script>
<!--end search-->
</li>
</ul>
</div>
</div>
<!-- /.container -->
</nav>
<!-- Page Content -->
<div class="container">
<div id="main">
<!-- Content Row -->
<div class="row">
<!-- Sidebar Column -->
<div class="col-md-3" id="tg-sb-sidebar">
<ul id="mysidebar" class="nav">
<li class="sidebarTitle">
<label for="docVersion">Eclipse Ditto version:</label>
<div class="select-wrapper">
<select id="docVersion" name="docVersion">
<option value="">development</option>
<option value="1.0">1.0</option>
<option value="1.1">1.1</option>
<option value="1.2">1.2</option>
<option value="1.3">1.3</option>
<option value="1.4">1.4</option>
</select>
</div>
<div id="dev-warning">
<div markdown="span" class="alert alert-warning" role="alert" style="font-size:0.6em"><i class="fa fa-warning"></i> <b>Important:</b> This documentation reflects the latest 'development'. You might want to choose a released version.</div>
</div>
</li>
<li class="subfolders">
<a href="#"><span></span>Introduction</a>
<ul>
<li><a href="intro-overview.html">Overview</a></li>
<li><a href="intro-digitaltwins.html">Digital twins</a></li>
<li><a href="intro-hello-world.html">Hello world</a></li>
</ul>
</li>
<li class="subfolders">
<a href="#"><span></span>Release Notes</a>
<ul>
<li><a href="release_notes_110.html">1.1.0</a></li>
<li><a href="release_notes_100.html">1.0.0</a></li>
<li class="active"><a href="release_notes_090.html">0.9.0</a></li>
<li><a href="release_notes_080.html">0.8.0</a></li>
<li class="subfolders">
<a href="#"><span></span>Milestone releases</a>
<ul>
<li><a href="release_notes_100-M2.html">1.0.0-M2</a></li>
<li><a href="release_notes_100-M1a.html">1.0.0-M1a</a></li>
<li><a href="release_notes_090-M2.html">0.9.0-M2</a></li>
<li><a href="release_notes_090-M1.html">0.9.0-M1</a></li>
<li><a href="release_notes_080-M3.html">0.8.0-M3</a></li>
<li><a href="release_notes_080-M2.html">0.8.0-M2</a></li>
<li><a href="release_notes_080-M1.html">0.8.0-M1</a></li>
<li><a href="release_notes_030-M2.html">0.3.0-M2</a></li>
<li><a href="release_notes_030-M1.html">0.3.0-M1</a></li>
<li><a href="release_notes_020-M1.html">0.2.0-M1</a></li>
<li><a href="release_notes_010-M3.html">0.1.0-M3</a></li>
<li><a href="release_notes_010-M1.html">0.1.0-M1</a></li>
</ul>
</li>
</ul>
</li>
<li class="subfolders">
<a href="#"><span></span>Installation</a>
<ul>
<li><a href="installation-building.html">Building Ditto</a></li>
<li><a href="installation-running.html">Running Ditto</a></li>
<li><a href="installation-operating.html">Operating Ditto</a></li>
</ul>
</li>
<li class="subfolders">
<a href="#"><span></span>Basic concepts</a>
<ul>
<li><a href="basic-overview.html">Overview</a></li>
<li class="subfolders">
<a href="#"><span></span>Model entities</a>
<ul>
<li><a href="basic-thing.html">Thing</a></li>
<li><a href="basic-acl.html">Access Control List (ACL)</a></li>
<li><a href="basic-feature.html">Feature</a></li>
<li><a href="basic-policy.html">Policy</a></li>
<li><a href="basic-namespaces-and-names.html">Namespaces and Names</a></li>
</ul>
</li>
<li><a href="basic-auth.html">Authentication and Authorization</a></li>
<li><a href="basic-messages.html">Messages</a></li>
<li><a href="basic-signals.html">Signals</a></li>
<li class="subfolders">
<a href="#"><span></span>Signal types</a>
<ul>
<li><a href="basic-signals-command.html">Command</a></li>
<li><a href="basic-signals-commandresponse.html">Command response</a></li>
<li><a href="basic-signals-errorresponse.html">Error response</a></li>
<li><a href="basic-signals-event.html">Event</a></li>
</ul>
</li>
<li><a href="basic-apis.html">APIs</a></li>
<li><a href="basic-connections.html">Connections</a></li>
<li><a href="basic-placeholders.html">Placeholders</a></li>
<li><a href="basic-changenotifications.html">Change notifications</a></li>
<li><a href="basic-rql.html">RQL expressions</a></li>
<li><a href="basic-enrichment.html">Signal enrichment</a></li>
<li><a href="basic-search.html">Search</a></li>
<li><a href="basic-acknowledgements.html">Acknowledgements</a></li>
</ul>
</li>
<li class="subfolders">
<a href="#"><span></span>Architecture</a>
<ul>
<li><a href="architecture-overview.html">Overview</a></li>
<li class="subfolders">
<a href="#"><span></span>Services</a>
<ul>
<li><a href="architecture-services-policies.html">Policies</a></li>
<li><a href="architecture-services-things.html">Things</a></li>
<li><a href="architecture-services-things-search.html">Things-Search</a></li>
<li><a href="architecture-services-connectivity.html">Connectivity</a></li>
<li><a href="architecture-services-concierge.html">Concierge</a></li>
<li><a href="architecture-services-gateway.html">Gateway</a></li>
</ul>
</li>
</ul>
</li>
<li class="subfolders">
<a href="#"><span></span>HTTP API</a>
<ul>
<li><a href="httpapi-overview.html">Overview</a></li>
<li><a href="httpapi-concepts.html">Concepts</a></li>
<li><a href="httpapi-search.html">Search</a></li>
<li><a href="httpapi-messages.html">Messages</a></li>
<li><a href="httpapi-protocol-bindings-websocket.html">WebSocket protocol binding</a></li>
<li><a href="httpapi-sse.html">Server sent events</a></li>
</ul>
</li>
<li class="subfolders">
<a href="#"><span></span>Connectivity API</a>
<ul>
<li><a href="connectivity-overview.html">Overview</a></li>
<li><a href="connectivity-manage-connections.html">Manage connections</a></li>
<li><a href="connectivity-protocol-bindings-amqp091.html">AMQP 0.9.1 protocol binding</a></li>
<li><a href="connectivity-protocol-bindings-amqp10.html">AMQP 1.0 protocol binding</a></li>
<li><a href="connectivity-protocol-bindings-mqtt.html">MQTT 3.1.1 protocol binding</a></li>
<li><a href="connectivity-protocol-bindings-mqtt5.html">MQTT 5 protocol binding</a></li>
<li><a href="connectivity-protocol-bindings-http.html">HTTP 1.1 protocol binding</a></li>
<li><a href="connectivity-protocol-bindings-kafka2.html">Kafka 2.x protocol binding</a></li>
<li><a href="connectivity-mapping.html">Payload mapping</a></li>
<li><a href="connectivity-header-mapping.html">Header mapping</a></li>
<li><a href="connectivity-tls-certificates.html">TLS certificates</a></li>
</ul>
</li>
<li class="subfolders">
<a href="#"><span></span>Client SDK</a>
<ul>
<li><a href="client-sdk-overview.html">Overview</a></li>
<li><a href="client-sdk-java.html">Java</a></li>
<li><a href="client-sdk-javascript.html">JavaScript</a></li>
</ul>
</li>
<li class="subfolders">
<a href="#"><span></span>Ditto Protocol</a>
<ul>
<li><a href="protocol-overview.html">Overview</a></li>
<li><a href="protocol-twinlive.html">Twin/live channel</a></li>
<li><a href="protocol-specification.html">Specification</a></li>
<li><a href="protocol-specification-topic.html">Protocol topic</a></li>
<li><a href="protocol-specification-things.html">Things group</a></li>
<li class="subfolders">
<a href="#"><span></span>→ commands/events</a>
<ul>
<li><a href="protocol-specification-things-create-or-modify.html">Create/Modify</a></li>
<li><a href="protocol-specification-things-retrieve.html">Retrieve</a></li>
<li><a href="protocol-specification-things-delete.html">Delete</a></li>
<li><a href="protocol-specification-acks.html">Acknowledgements</a></li>
</ul>
</li>
<li class="subfolders">
<a href="#"><span></span>→ search/messages</a>
<ul>
<li><a href="protocol-specification-things-search.html">Search</a></li>
<li><a href="protocol-specification-things-messages.html">Messages</a></li>
</ul>
</li>
<li><a href="protocol-specification-policies.html">Policies group</a></li>
<li class="subfolders">
<a href="#"><span></span>→ commands/events</a>
<ul>
<li><a href="protocol-specification-policies-create-or-modify.html">Create/Modify</a></li>
<li><a href="protocol-specification-policies-retrieve.html">Retrieve</a></li>
<li><a href="protocol-specification-policies-delete.html">Delete</a></li>
</ul>
</li>
<li><a href="protocol-bindings.html">Bindings</a></li>
<li><a href="protocol-examples.html">Examples</a></li>
<li class="subfolders">
<a href="#"><span></span>→ Things examples</a>
<ul>
<li><a href="protocol-examples-creatething.html">Create a Thing</a></li>
<li><a href="protocol-examples-deletething.html">Delete a Thing</a></li>
<li><a href="protocol-examples-modifything.html">Modify a Thing</a></li>
<li><a href="protocol-examples-retrievething.html">Retrieve a Thing</a></li>
<li><a href="protocol-examples-retrievethings.html">Retrieve multiple Things</a></li>
<li><a href="protocol-examples-modifypolicyid.html">Modify the Policy ID of a Thing</a></li>
<li><a href="protocol-examples-createattributes.html">Create Attributes</a></li>
<li><a href="protocol-examples-deleteattributes.html">Delete Attributes</a></li>
<li><a href="protocol-examples-modifyattributes.html">Modify Attributes</a></li>
<li><a href="protocol-examples-retrieveattributes.html">Retrieve Attributes</a></li>
<li><a href="protocol-examples-createattribute.html">Create a single Attribute</a></li>
<li><a href="protocol-examples-deleteattribute.html">Delete a single Attribute</a></li>
<li><a href="protocol-examples-modifyattribute.html">Modify a single Attribute</a></li>
<li><a href="protocol-examples-retrieveattribute.html">Retrieve a single Attribute</a></li>
<li><a href="protocol-examples-createthingdefinition.html">Create a Definition</a></li>
<li><a href="protocol-examples-deletethingdefinition.html">Delete a Definition</a></li>
<li><a href="protocol-examples-modifythingdefinition.html">Modify a Definition</a></li>
<li><a href="protocol-examples-retrievethingdefinition.html">Retrieve a Definition</a></li>
<li><a href="protocol-examples-createfeatures.html">Create Features</a></li>
<li><a href="protocol-examples-deletefeatures.html">Delete Features</a></li>
<li><a href="protocol-examples-modifyfeatures.html">Modify Features</a></li>
<li><a href="protocol-examples-retrievefeatures.html">Retrieve Features</a></li>
<li><a href="protocol-examples-createfeature.html">Create a single Feature</a></li>
<li><a href="protocol-examples-deletefeature.html">Delete a single Feature</a></li>
<li><a href="protocol-examples-modifyfeature.html">Modify a single Feature</a></li>
<li><a href="protocol-examples-retrievefeature.html">Retrieve a single Feature</a></li>
<li><a href="protocol-examples-createdefinition.html">Create Feature Definition</a></li>
<li><a href="protocol-examples-deletedefinition.html">Delete Feature Definition</a></li>
<li><a href="protocol-examples-modifydefinition.html">Modify Feature Definition</a></li>
<li><a href="protocol-examples-retrievedefinition.html">Retrieve Feature Definition</a></li>
<li><a href="protocol-examples-createproperties.html">Create Feature Properties</a></li>
<li><a href="protocol-examples-deleteproperties.html">Delete Feature Properties</a></li>
<li><a href="protocol-examples-modifyproperties.html">Modify Feature Properties</a></li>
<li><a href="protocol-examples-retrieveproperties.html">Retrieve Feature Properties</a></li>
<li><a href="protocol-examples-createproperty.html">Create a single Property</a></li>
<li><a href="protocol-examples-deleteproperty.html">Delete a single Property</a></li>
<li><a href="protocol-examples-modifyproperty.html">Modify a single Property</a></li>
<li><a href="protocol-examples-retrieveproperty.html">Retrieve a single Property</a></li>
<li><a href="protocol-examples-errorresponses.html">Error responses</a></li>
</ul>
</li>
<li class="subfolders">
<a href="#"><span></span>→ Policies examples</a>
<ul>
<li><a href="protocol-examples-policies-createpolicy.html">Create a Policy</a></li>
<li><a href="protocol-examples-policies-deletepolicy.html">Delete a Policy</a></li>
<li><a href="protocol-examples-policies-modifypolicy.html">Modify a Policy</a></li>
<li><a href="protocol-examples-policies-retrievepolicy.html">Retrieve a Policy</a></li>
<li><a href="protocol-examples-policies-modifypolicyentries.html">Modify entries</a></li>
<li><a href="protocol-examples-policies-retrievepolicyentries.html">Retrieve entries</a></li>
<li><a href="protocol-examples-policies-createpolicyentry.html">Create a single entry</a></li>
<li><a href="protocol-examples-policies-deletepolicyentry.html">Delete a single entry</a></li>
<li><a href="protocol-examples-policies-modifypolicyentry.html">Modify a single entry</a></li>
<li><a href="protocol-examples-policies-retrievepolicyentry.html">Retrieve a single entry</a></li>
<li><a href="protocol-examples-policies-modifysubjects.html">Modify subjects</a></li>
<li><a href="protocol-examples-policies-retrievesubjects.html">Retrieve subjects</a></li>
<li><a href="protocol-examples-policies-createsubject.html">Create a single subject</a></li>
<li><a href="protocol-examples-policies-deletesubject.html">Delete a single subject</a></li>
<li><a href="protocol-examples-policies-modifysubject.html">Modify a single subject</a></li>
<li><a href="protocol-examples-policies-retrievesubject.html">Retrieve a single subject</a></li>
<li><a href="protocol-examples-policies-modifyresources.html">Modify resources</a></li>
<li><a href="protocol-examples-policies-retrieveresources.html">Retrieve resources</a></li>
<li><a href="protocol-examples-policies-createresource.html">Create a single resource</a></li>
<li><a href="protocol-examples-policies-deleteresource.html">Delete a single resource</a></li>
<li><a href="protocol-examples-policies-modifyresource.html">Modify a single resource</a></li>
<li><a href="protocol-examples-policies-retrieveresource.html">Retrieve a single resource</a></li>
<li><a href="protocol-examples-policies-errorresponses.html">Error responses</a></li>
</ul>
</li>
<li><a href="protocol-examples-search.html">→ Search examples</a></li>
</ul>
</li>
<li><a href="sandbox.html">Sandbox</a></li>
<li><a href="presentations.html">Presentations</a></li>
<li><a href="glossary.html">Glossary</a></li>
<li><a href="feedback.html">Feedback</a></li>
<p class="external">
<a href="#" id="collapseAll">Collapse All</a> | <a href="#" id="expandAll">Expand All</a>
</p>
</ul>
<!-- this highlights the active parent class in the sidebar. this is critical so that the parent expands when you're viewing a page. This must appear below the sidebar code above. Otherwise, if placed inside customscripts.js, the script runs before the sidebar code runs and the class never gets inserted.-->
<script>$("li.active").parents('li').toggleClass("active");
</script>
</div>
<!-- Content Column -->
<div class="col-md-9" id="tg-sb-content">
<div class="post-header">
<h1 class="post-title-main">Release notes 0.9.0</h1>
</div>
<div class="post-content">
<div class="summary">Version 0.9.0 of Eclipse Ditto, released on 10.07.2019</div>
<!-- this handles the automatic toc. use ## for subheads to auto-generate the on-page minitoc. if you use html tags, you must supply an ID for the heading element in order for it to appear in the minitoc. -->
<script>
$( document ).ready(function() {
// Handler for .ready() called.
$('#toc').toc({ minimumHeaders: 0, listType: 'ul', showSpeed: 0, headers: 'h2,h3,h4' });
/* this offset helps account for the space taken up by the floating toolbar. */
$('#toc').on('click', 'a', function() {
var target = $(this.getAttribute('href'))
, scroll_target = target.offset().top
$(window).scrollTop(scroll_target - 10);
return false
})
});
</script>
<div id="toc"></div>
<p>During several very hot summer days the Eclipse Ditto team worked on that last issues which were blocking our next
release: <code class="highlighter-rouge">0.9.0</code>.</p>
<p>The successor release of <a href="release_notes_080.html">0.8.0</a> will most likely be the last “0.” incubation release as Ditto
is moving forward for a <code class="highlighter-rouge">1.0.0</code> and a project graduation in Eclipse IoT.</p>
<p>Same as for <code class="highlighter-rouge">0.8.0</code> this release is completely <a href="https://www.eclipse.org/projects/handbook/#ip">IP (intellectual property) checked by
the Eclipse Foundation</a> meaning that project code as well as all used
dependencies were “[…] reviewed to ensure that the copyrights expressed are correct, licensing is valid
and compatible, and that other issues have been uncovered and properly investigated.”</p>
<h2 id="whats-in-this-release">What’s in this release?</h2>
<p>Eclipse Ditto 0.9.0 focuses on the following areas:</p>
<ul>
<li>Memory improvements for huge amounts (multi million) of digital twins which are held in memory</li>
<li>Adding metrics and logging around the connectivity feature in order to enable being able to operate connections to foreign systems/brokers via APIs</li>
<li>Enhancing Ditto’s connectivity feature by additionally being able to connect to Apache Kafka</li>
<li>Performance improvements of Ditto’s search functionality</li>
<li>Stabilization of cluster bootstrapping</li>
<li>Refactoring of how the services configurations are determined</li>
<li>Addition of a Helm template in order to simplify Kubernetes based deployments</li>
<li>Contributions from Microsoft in order to ease operating Eclipse Ditto on Microsoft Azure</li>
</ul>
<div class="alert alert-danger" role="alert"><i class="fa fa-exclamation-circle"></i> <b>Warning:</b> If you want to upgrade an existing Ditto 0.8.0 installation, the following database
migration has to be done: <strong>Follow the steps documented in <a href="architecture-services-things-search.html#migration-from-ditto-090-m1">the migration notes</a></strong>.</div>
<h3 id="changelog">Changelog</h3>
<p>Compared to the latest milestone release <a href="release_notes_090-M2.html">0.9.0-M2</a>, the following changes, new features and
bugfixes were added.</p>
<h4 id="changes">Changes</h4>
<h5 id="streamline-configuration"><a href="https://github.com/eclipse/ditto/issues/350">Streamline configuration</a></h5>
<p>In this release, we changed how internally the configuration is determined in Ditto’s microservices. This should not
have any impact on a user of Eclipse Ditto. As however some configuration keys were remanded or restructured, some
adjustments when manually configuring Ditto could be required.</p>
<h4 id="new-features">New features</h4>
<h5 id="introduce-cursor-based-paging-for-search-requests"><a href="https://github.com/eclipse/ditto/pull/407">Introduce cursor-based paging for search requests</a></h5>
<p>In order to provide a constant performance for using pagination for the <code class="highlighter-rouge">things-search</code> miscroservice across even large
result sets (100s of thousands or more) of digital twins, a new cursor-based approach was added in addition to the
old <code class="highlighter-rouge">offset/limit</code> approach which gets slower for each page.</p>
<h5 id="simple-throttling-for-amqp-10-consumers"><a href="https://github.com/eclipse/ditto/pull/420">Simple throttling for amqp 1.0 consumers</a></h5>
<p>Added a simple throttling mechanism for amqp 1.0 consumers.
The throttling is configurable by defining the number of messages allowed per time interval.</p>
<h5 id="collect-connectivity-log-entries-and-provide-via-devops-command"><a href="https://github.com/eclipse/ditto/issues/318">Collect connectivity log entries and provide via devops command</a></h5>
<p>In order to let a user analyze failures / unexpected behavior in his connections (e.g. to an MQTT or AMQP broker)
without giving him full access to the log-files of Ditto, a connection scoped mechanism for retrieving connectivity logs
was added.</p>
<h4 id="bugfixes">Bugfixes</h4>
<h5 id="memory-and-performance-fixes-in-concierge-gateway"><a href="https://github.com/eclipse/ditto/pull/400">Memory and performance fixes in concierge, gateway</a></h5>
<p>Ditto’s <code class="highlighter-rouge">concierge</code> service did use a sharding approach for enforcing authorization information which lead to huge
amounts of memory required when managing multi million of digital twins.</p>
<p>That, in addition to some memory fixes in the gateway and addition of metrics, was fixed in this PR.</p>
<h5 id="ensure-ordering-for-processed-commands"><a href="https://github.com/eclipse/ditto/pull/417">Ensure ordering for processed commands</a></h5>
<p>In previous versions of Ditto the order in which command were processed not guaranteed to be maintained. As maintaining
the order however is the expected behavior, we decided to treat that as bug and added to the <code class="highlighter-rouge">concierge</code> service (where
the order could be lost) to sequentially process commands issues via HTTP/WebSocket and connections.</p>
<p>This release contains several bugfixes, this is a complete list of the
<a href="https://github.com/eclipse/ditto/pulls?q=is%3Apr+milestone%3A0.9.0+">merged pull requests</a>.</p>
<h2 id="api-stability">API stability</h2>
<p>As you noticed, Ditto is not yet released as 1.x version, it is still an
<a href="https://wiki.eclipse.org/Development_Resources/Process_Guidelines/What_is_Incubation">incubating Eclipse project</a>.</p>
<p>That means that the project <em>could</em> choose to break APIs at any time without prior deprecation.</p>
<p>We however can already guarantee that at the HTTP API for <a href="basic-overview.html#api-version-1---deprecated">API version 1 and 2</a> the
API stability is already ensured for the core functionality of managing <code class="highlighter-rouge">things</code> and <code class="highlighter-rouge">policies</code>.</p>
<p>As the commercial product based on Eclipse Ditto, <a href="https://www.bosch-iot-suite.com/things/">Bosch IoT Things</a>, is
already used productive and in various projects, the API stability has to be and will be ensured moving forward towards
a 1.0.0 release.</p>
<h2 id="roadmap">Roadmap</h2>
<p>The Ditto project plans on releasing (non-milestone releases) twice per year, once every 6 months.</p>
<p>In late 2019 we expect to graduate (exit the Eclipse incubation phase) with a 1.0.0 release.</p>
<div class="tags">
<b>Tags: </b>
<a href="tag_release_notes.html" class="btn btn-default navbar-btn cursorNorm" role="button">release_notes</a>
</div>
</div>
<hr class="shaded"/>
<footer>
<div class="row">
<div class="col-lg-12 footer">
<div class="logo">
<a href="https://eclipse.org"><img src="images/eclipse_foundation_logo.svg" alt="Eclipse logo"/></a>
</div>
<p class="notice">
&copy;2020 Eclipse Ditto.
Site last generated: Dec 9, 2020 <br />
</p>
<div class="quickLinks">
<a href="https://www.eclipse.org/legal/privacy.php" target="_blank">
&gt; Privacy Policy
</a>
<a href="https://www.eclipse.org/legal/termsofuse.php" target="_blank">
&gt; Terms of Use
</a>
<a href="https://www.eclipse.org/legal/copyright.php" target="_blank">
&gt; Copyright Agent
</a>
<a href="https://www.eclipse.org/legal" target="_blank">
&gt; Legal
</a>
<a href="https://www.eclipse.org/legal/epl-2.0/" target="_blank">
&gt; License
</a>
<a href="https://eclipse.org/security" target="_blank">
&gt; Report a Vulnerability
</a>
</div>
</div>
</div>
</footer>
</div>
<!-- /.row -->
</div>
<!-- /.container -->
</div>
<!-- /#main -->
</div>
</body>
</html>