Serverless Azure: Event-based Microservices - beyond just Functions

Whaaat? No servers? Well, yes. The Serverless approach for building microservices promises to offer a low entry barrier - for both getting starting and for fulfilling a target. In this session Christian will show you end-to-end Serverless with Azure & .NET Core by means of a realistic application scenario from customer projects. Based on proven design patterns you can build simple & complex applications scenarios with Azure Functions, Azure Event Grid, Azure Cosmos DB, Azure Storage & friends. Locally and in the cloud. One of the central key concepts here is thinking in events in order to trigger actions like sending messages, retrieving data or pushing information to destinations. Come and join this session, maybe you will face some new ideas for your future business software.

Transcript

1. Christian Weyer
   @christianweyer
   CTO
   Serverless Azure
   Event-based Microservices - beyond just Functions
   Azure Saturday 2018
   

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2. 2
   § Founder & CTO at Thinktecture AG
   § Personal focus on
   § Mobile & web-based application architectures
   § Interoperability, cross-device
   § Pragmatic end-to-end solutions
   § Cloud-native & serverless architectures
   § Independent Microsoft Regional Director
   § Microsoft MVP for ASP.NET (Architecture)
   ASPInsider, AzureInsider
   § Google GDE for Web Technologies
   § christian.weyer@thinktecture.com
   § ! @christianweyer
   Christian Weyer
   Event-based Microservices - beyond just Functions
   Serverless Azure
   

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3. 3
   Let’s start with a demo !
   Event-based Microservices - beyond just Functions
   Serverless Azure
   

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4. 4
   § Serverless ?
   § Serverless Compute
   § Serverless Database
   § Serverless Eventing
   Serverless Azure
   Event-based Microservices - beyond just Functions
   The Journey
   

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5. 5
   Building & integrating software
   Microservices architectures
   (virtual introduction !)
   Event-based Microservices - beyond just Functions
   Serverless Azure
   

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6. 6
   A different approach
   Serverless
   Event-based Microservices - beyond just Functions
   Serverless Azure
   

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7. 7
   § We can choose from a continuum
   § VM ➔
   § Containers ➔
   § Orchestrators ➔
   § PaaS ➔
   § Serverless
   Event-based Microservices - beyond just Functions
   Evolution to Cloud Compute Continuum
   PaaS
   IaaS
   On-Premises Serverless
   Serverless Azure
   

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8. 8
   What is Serverless, anyway?
   Event-based Microservices - beyond just Functions
   Serverless Azure
   

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9. 9
   § Serverless Compute → Azure Functions
   § Serverless Database → Azure Cosmos DB
   § Serverless Events → Azure Event Grid
   § Serverless Realtime → Azure SignalR Service
   § Serverless Workflows → Azure Durable Functions &
   Azure Logic Apps
   § Serverless IoT → Azure IoT Hub
   § Serverless Analytics → Application Insights
   ... and more: https://azure.microsoft.com/en-us/overview/serverless-computing/
   Event-based Microservices - beyond just Functions
   Serverless in Azure (Serverless != FaaS-only)
   Serverless Azure
   

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10. 10
    Serverless Home Automation
    Demo Scenario
    Event-based Microservices - beyond just Functions
    Serverless Azure
    

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11. Demo Scenario:
    Serverless Home Automation
    Event-based Microservices - beyond just Functions
    Serverless Azure
    Event Hub
    IoT Hub
    Cosmos DB
    App Service
    

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12. 12
    Azure Functions
    Serverless Code / Compute
    Event-based Microservices - beyond just Functions
    Serverless Azure
    

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13. 13
    § Azure Functions is code being triggered by an event
    § Focused code + events
    § Basic principles enable powerful use cases
    § Events ➔ Triggers
    § Bindings
    § Two ways of operation
    § Cost-optimized, automatic scale
    § Always-on, via Azure App Service
    § V2 runtime built on .NET Core
    § Available for self-hosting
    Event-based Microservices - beyond just Functions
    Azure Functions: Functions-as-a-Service
    Serverless Azure
    

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14. 14
    § In portal, via CLI, or in IDE
    § Visual Studio wizards
    for pre-compiled Functions
    § Local tooling & runtime available
    § Debugging locally or remote
    § Multiple language bindings
    supported
    § C# & C# Script (CSX)
    § F#
    § JavaScript, TypeScript (node.js)
    § Java (preview)
    § Bash, Batch, PowerShell
    § … more planned
    Event-based Microservices - beyond just Functions
    Developing Functions
    Serverless Azure
    

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15. 15
    § Incoming event triggers
    function
    § Input bindings enable
    easy access to data
    from various data sources
    § Output bindings offer
    easy access to outbound
    data sinks
    § Custom triggers and bindings
    can be implemented
    Event-based Microservices - beyond just Functions
    Triggers & Bindings
    Serverless Azure
    Your code logic
    Runtime
    Azure Function
    HTTP
    Trigger
    Storage
    Input
    Binding
    Push
    Notification
    Output Binding
    Database
    Output Binding
    Email
    Output Binding
    

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16. 16
    Event-based Microservices - beyond just Functions
    Triggers & Bindings in Code
    Serverless Azure
    

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17. 17
    Event-based Microservices - beyond just Functions
    Serverless Azure
    https://docs.microsoft.com/en-us/azure/azure-functions/functions-triggers-bindings
    Triggers &
    Bindings
    

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18. 18
    Azure Cosmos DB
    Serverless Database
    Event-based Microservices - beyond just Functions
    Serverless Azure
    

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19. 19
    § Globally distributed, elastically scalable
    § Fully managed by Azure
    § Multi-model database
    § Key-value, document, graph
    § Multiple APIs
    § DocumentDB, with SQL & JS APIs
    § MongoDB API
    § Cassandra API
    § Table Storage API
    § Graph Database with Gremlin API
    § No database schema management
    Event-based Microservices - beyond just Functions
    Cosmos DB: A Database with Many Faces
    Serverless Azure
    

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20. 20
    § Building event-driven architectures with Cosmos DB
    § Use as input binding in Functions
    § Subscribe to collection changes
    § Can be used as a trigger for
    Functions
    Event-based Microservices - beyond just Functions
    Cosmos DB Change Feed
    Serverless Azure
    

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21. 21
    Azure Event Grid
    Serverless Eventing
    Event-based Microservices - beyond just Functions
    Serverless Azure
    

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22. 22
    § Fully-managed centralized
    event routing service
    § Simplifies development
    of event-based applications
    § Simplifies creation of
    serverless workflows
    § Manages all routing of events
    § From any source, to any destination, for any application
    § Eventing, not enterprise messaging
    § Supports direct event filtering using event type, prefix or suffix
    § Your application will only need to receive the events you care about
    § Same underlying model for different use-cases
    § System-provided events
    § Custom application-specific events
    Event-based Microservices - beyond just Functions
    Event Grid
    Serverless Azure
    

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23. 23
    Event Grid Reliability & Performance
    Event-based Microservices - beyond just Functions
    Serverless Azure
    

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24. 24
    Summary
    Event-based Microservices - beyond just Functions
    Serverless Azure
    

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25. 25
    § Serverless is just one option in the Cloud Continuum
    § Always think about the use cases and requirements
    § Think in events & triggers!
    § Serverless Azure tries to offer solutions in the Continuum –
    mixture of PaaS & FaaS
    § Functions
    § Cosmos DB
    § Event Grid
    § SignalR Service
    § … & more
    § It is not about Windows & .NET - it is about any OS, any platform,
    any language – any solution J
    Summary
    Event-based Microservices - beyond just Functions
    Serverless Azure
    

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26. 26
    § Processing 100,000 Events Per Second on Azure Functions
    § https://blogs.msdn.microsoft.com/appserviceteam/2017/09/19/processing-
    100000-events-per-second-on-azure-functions/
    § Azure Functions – Significant Improvements in HTTP Trigger Scaling
    § https://www.azurefromthetrenches.com/azure-functions-significant-
    improvements-in-http-trigger-scaling/
    Serverless Azure
    Event-based Microservices - beyond just Functions
    Interesting reading
    

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27. Serverless Azure
    Event-based Microservices - beyond just Functions
    Christian Weyer
    @christianweyer
    christian.weyer@thinktecture.com
    Thank you!
    https://github.com/thinktecture/azuresaturday-2018-serverless
    

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