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Keynote
- 57% of fortune 500 companies are using Azure. More than 300 million active directory users. Over 1 Million SQL Databases.
- Azure powered the NDC Sochi olympics live media streaming
- Support for Puppet and Chef infrastructure configuration tools
- New features on Azure IaaS
- Create and Manage VM’s from Visual Studio
- Enable Debugging from VS and attach it to the VM
- Azure portal now has plugins and agents for Puppet and Chef integrated in the VM Creation wizard
- Puppet Enterprise Console demo (load a class for microsoft-sysinternals)
- Speech from CEO of Getty Images. They use puppet and azure heavily.
- Autocale feature is now available
- New features on Azure Paas
- Web
- Azure websites will now support “Java”
- Azure websites “Staging” feature
- Traffic Manager support. Intelligent customer routing. It will work with websties as well virtual machines.
- New options on the VS ASP.net web project creation screen to create websites directly from there
- Sync CSS changes from IE DOM Explorer to Visual Studio CSS file. This works in Chrome and IE
- Sync the editing of HTML tag values with HTML files in Visual Studio. (LIVE !!!!)
- JsHint integrated for VS JavaScript debugging
- WebJobs can be simple console applications which can listen to events fro Queue and Blob updates
- Free SSL certificates for Websites
- CDN generally available now
- Mobile
- Mobile services now support Active Directory
- New VS Project Template for creating Mobile Service
- Support for Local and Remote debugging for Mobile Services
- New Mobile Services .Net API’s which can be used in all apps.
- Demo of win 8 app with portable library + sharepoint document upload + xamarian to port the app to iOS
- Demo of “DocuSign” app on iPhone. Built using ,Net and SQL Server.
- “Offline Data Sync” features for Mobile Services
- Azure AD Premium offerings
- Kindle support for Notification Hub
- Data
- SQL Azure Database now supports 500 GB + 99.95% SLA
- Self Service restore feature ( for emergenices like DELETE from tablename
) is now builtin
- Active geo replication feature. Primary and Secondary region data replication.
- Updates to HDInsight. Supports Hadoop 2.2
- YARN support
- Programming Languages & Tools
- .NET compiler platform (“Roslyn”)
- The New Azure Management Portal (https://portal.azure.com )
- Reimagined modern design with live breadcrumbs to navigate easily
- Extensible design
- Integrated TFS Work Items, Check-in views, Code views, Application Insights.
- Integrated Code Editor for complete DevOps lifecycle
- Resource Groups (group of resources which are running an application)
- New Azure Powershell cmdlets to publish resource templates
- Export the entire script of the resource group in a ,json file. Similar to infrastructure scripts
- Azure Resource Manager preview available
- Visual Studio Online GA
- Screenshots:
- Part 2 of Keynote
- Key developer concerns/questions
- Support Existing Investments
- Classic Desktop apps. Demo of WPF connected Office 365 Calendar API’s
- Demo of old VB6 apps transformed to a Web App using WebMap
- Mobile and Cloud First
- Demo of geofencing component for foursquare
- Demo of Heapsylon Sensoria capturning the foot sensor data and showing live feed on a windows phone
- Launch of new “App Studio” to generate Windows 8 apps from Websites.
- New Offline support using the HTML5 Index DB to cache the browsed data
Building services for Connected Devices
- Key Aspects
- End to end asynchronous data flow
- Direct HTTP based connectivity and inbound messaging
- Queue drien message processing
- General Purpose IoT Architecture
- Device
- Protocol Gateway (Ingest)
- Messaging and Eventing
- Embedded Devices + Mobile Devices
- Message Processing
- Bulk Storage & Latent Analytics
- More Stuff
- Sample fast food outlet application
- Updates published to central server every minute (~5Kb XML files)
- Solution –> Azure web role as ingest and Message Queue + Azure workerrole
- Ingest and Protocol Management
- Device almost always has to initiate connections
- Firewalls, NATs, dynamic IP, general network weirdness
- Socket Management, Hold Sockets open, keep alives – latency on push notifications
- Protocol – HTTP, AMWP, MQTT, TCP, custom (bluetooth etc)
- Direct connectivity vs concentrator/local gateway
- Smart Grid / Power meters
- Message response
- VS Code demo
- ServicePointManager configurations for improving latency and concurrent connections with Storage
- UseNagleAlgorithm
- DefaultConnectionLimit
- Expect100Continue
- Queue “CreateIfNotExistsAsync” method should only be called once. Use factory method which initializes this
- Unbound concurrency can bring down the system. E.g. Task.Run in a for loop
- Use a Task.WaitAll outside the for loop. Inside the for loop just add Tasks to a task list.
- In memory queue –> .GetConsumingEnumerable() API is a friend
- Managing configuration settings between Worker Role and Web Role can cause issues. Instead of using app.config and web.config use the Role configuration to store the settings.
High-performance web platform
- The Physics of FAST (Physical factors in performance )
- Network Utilization and Limits (bandwidth in mbps)
- 2G (0.1)
- 3G (1.8)
- 4G HSPA+ (3.4)
- WiFi (6.1)
- 4G LTE (7.5)
- We can increase the bandwidth but latency might still be the issue (clap and response clap demo)
- Speed and Responsiveness
- CPU Utilization / Elapsed Page Load
- Real and Perceived performance
- Memory Utilization
- important when targeting low-cost devices with your sites and apps
- Power Consumption
- Let it rest !
- CPU Utilization, GPU Utilization and VSync
- Thermo mitigation (won’t charge since the device is too hot)
- 5 Watt for Phone devices
- Targets Devices Matter
- Web Runtime Architecture
- Networking cache
- Parsers
- creates internal data structures
- DOM Tree (DOM API, JavaScript, CSS Cascade)
- Formatting
- Layout
- Display Tree
- Painting
- Compositing
- Input / Hit Testing / DMANIP
- Event Tracing for Windows (ETW)
- Measuring Performance
- F12 Developer Tools (UI Responsiveness uses the ETW events)
- Windows Performance Toolkit
- Performance in the Real World
- Network Optimization
- Navigation Timing (F12 Console –> window.performance.timing)
- Average Payload
- 93 resources, 16 hosts
- 6 requests per host
- 1.7 MB total size, 46% cacheable (on Mobiles)
- Majority of the size is around “Images”
- How to optimize Images
- Right-size your images
- Reduce # of downloads (use sprites and minified images)
- Use a CDN
- Speed and Responsiveness
- Defer Script execution (scripts in bottom)
- Reduce # of Frameworks (single frameworks or libraries)
- Coaleasce style and layout changes
- jittering of a control as we scroll
- instead of updating the screen on every mouse event
- just use css to paint it after the event is done
- Use CSS Animation
- Memory
- Download size vs Memory Size
- 557KB image –---> Memory = width * height * 4
- Process
- Download Image
- Decode
- GPU Copy (here the CPU and CPU is not doing anything)
- GPU render
- Image Formats Matter (for both memory and CPU utilization)
- JPEG is encoded to YCbCr and then decoded by CPU to JPEG for rendering (IE10)
- GPU’s can render YCbCr so decoding is not needed for JPEG. (IE11 uses GPU for image rendering)
- Use JPEG when possible instead of PNG (as they are much faster)
Building Services for Mobile Apps using ASP.net Web API 2.1
- Mysteries of building backend services for mobile apps
- SOAP ? REST ? ODATA ?
- which framework ?
- hosting?
- security ?
- consuming ?
- offline ? notifications ? etc..
- SOAP is not mobile friendly (If you need SOAP then use WCF)
- HTTP and mobile – made for each other
- Ubiquitous
- Interoperable
- Scalable
- Flexible
- Mature
- Simple
- Many faces of HTTP frameworks in .NET
- WCF Web HTTP (underlying it sends XML so its kind off SOAP)
- WCF Data Services
- ASP.net MVC
- ASP.net Web API
- A framework for creating HTTP services that can reach a broad range of clients
- Why ASP.net Web API
- First class modern HTTP programming model
- Easily map resources to URI’s and implement the uniform interface of HTTP
- Rich support for formats and HTTP content negotiation
- Request validation
- Enable hypermedia with link generation
- Separate out cross cutting concerns
- authorization
- caching
- message header
- Help page generation
- Flexible hosting
- can be hosted outside IIS within an EXE
- Light-weight, testable, scales
- 2.0 features
- OWIN Integration
- Request batching
- 2.1 Features
- Global error handler
- attribute routing improvements
- BSON formatter
- Portable query building and parsing
- Samples and Docs http://www.asp.net/web-api
- Code at http://aspnetwebstack.codeplex.com
- REST and OData
- REST is an Architectural style for distributed sytems
- Defined by set of constraints (client-server, stateless, cacheable, layered, uniform interface)
- Induces properties: performance, scalability, evolvability, reliability, transparency
- Do a the Web does
- OData
- Is a protocol for interacting with REST-based data services
- Solves common issues (querying, paging etc)
- Web API 2.2 #NEW# features
- Build client logic as “Portable Libraries” (share code between Desktop, Phone and Windows)
- Security for Web API’s
- User Authorization filters (ex [Authorize])
- Implement your authorization logic
- derive from authorizationfilterattribute or implement IAuthorizationFilter
- Make Web API’s secure with OAuth 2.0
- Authorize requests using OAuth 2.0 Bearer tokens
- Get tokens from a trusted authz server
- Host your own
- MS OWIN for simple server implementation
- Use thinktecture full server implementation
- Use Existing one
- Azure active directory
- ADFS on windows server 2012
- Azure mobile services
Windows App Studio (Beta)
Keynote:
- Mobile First / Cloud First vision and strategy
- Microsoft announced Windows Phone 8.1 and Windows 8.1 Update
- New personal assistant “Cortana” – Microsoft’s answer to ‘Siri’ comes on Windows Phone 8.1
- Remind me to ask about puppy when I talk to “blah” next. (reminds when the call arrives)
- Many new features and optimizations on Windows Phone 8.1
- Weekly calendar views
- Swipe keyboard (World records of fastest phone keyboard)
- New Universal App development approach
- Share code between ALL Win 8 platforms (Phone, Desktops, Tablets, XBox One) easily with special Visual studio templates
- WinJS is now Open Source
- Visual Studio 2013 Update 2 RC available now
- Windows 8.1 Update available now on MSDN
- New Nokia 930 and other lumia devices announced
Single Page Application with ASP.net and Angular.js
- Sample to get started
- include angular.min.js
- create a controller js file and include it
- add the ng-app attribute on the html tag
- bind the controller to body
<body ng-controller=”testController”>
- Sample repeater control
<div ng-repeat=”card in cards”>
Card {{card.id}}
</div>
- testController is just a function
var testController = function ($scope) {
$scope.cards = [ { id:1 }, { id:2 } ];
}
- Bundling and minification may not work as angular needs the name $scope
- Use either nuget or cdn to get the angular js files
- keep you app controller js files separate
- Angular Items
- Modules
var mainApp = angular.module(‘mainApp’,[‘testController’]);
var testController = angular.module(‘testController’,[]);
angular.controller
ng-app=”mainApp”
- Controllers
- Dependency Injection
- $http
Lightweight API for AJAX requests
- $resources
- Filters
- routing
What’s new in WinJS
- WinJS 2.1 for Phone
- WinJS vision is to create a cross platform library for all devices
- WinJS is now Open Source and accepts contributions from community
- WinJS can now be used in cross platform Web sites and apps
- New Pivot Control for Phone
- Improvements and Support of WinJS controls on Phone
- Appbar on Phone
- ListView on Phone
- Semantic Zoom on Phone (e.g. grouped listview by alphabets. contacts list)
- New Animations on Phone
- User Themes on Phone
- App bar code automatically adjusts between Phone and PC
- WinJS Ratecontrol works with Angular and Knockout via 2 way binding
- http://try.buildwinjs.com/
Large Scale JavaScript with TypeScript
- Project “Monaco” – full code editor in browser for azurewebsites.
- JS Code base roadmap for “Monaco”
- Small – 50 KLOC (Modules, classes, promises) – 10% typescript
- Medium – 100 KLOC (AMD, lazy loaded, contributions) – 50% typescript
- Large – 200 KLOC (components, API, dependency injection) – 100% typescript
- Concerns with Javascript
- organizing a large and growing code base
- refatoring javascript code is difficult
- describing API’s
- TypeScript to rescue
- Optional and Structural typing
- Classes, Modules
- Interfaces (very powerful)
- interfaces named object types of describing the shape of JavaScript objects
- Typescript has Generics
- Typescript Type Definitions project on github (‘DefinitelyTyped’ respository’)
- Code Organization Pains
- Modules are open
- undisciplined name space contributions
- You can have a cyclic dependencies
- Name spaces have no relationship to the code organization on disk
- renaming files/name spaces is no fun
- Growing code pains
- requires ordering of js files
- dependencies between files
- eager loading (may load lots of stuff which is not needed)
- TypeScript External modules for rescue
- Separately loaded code referenced using external module names
- implemented in separate source files
- entities are private unless exported
- Module Pattern
- CommonJS
- Asynchronous Module Definition (AMD) e.g. requireJS
- Monaco
- Server uses node.js
- Client
- Common module syntax enables code sharing between client and server
- AMD migration was very good. Self contained modules.
- AMD Applied
- Componentization
- reuse typescript code as ‘binary’ JS components with a declarations file
- e.g.
- tsc – declarations –out typescriptservices.js typesript.ts
- generates typescriptservices.d.ts
