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Daron Yöndem
http://daron.me
@daronyondem
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Serverless architectures refer to applications that
significantly depend on third-party services (knows as
Backend as a Service or "BaaS") or on custom code
that's run in ephemeral containers (Function as a
Service or "FaaS")
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• The real dream of PAAS
• No Infrastructure, No Containers (seriously?)
• Scalable as hell!
• Granular Billing (GB/s, GHz-Second)
• No commitment, no hardware provisioning (c’mon?)
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• Containers are the new VMs!
• Server Patching > Container Image Batching
• Container Orchestration is hard.
• What if I have my dependencies though?
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• You can have a fleet of EC2 instances, running containers,
orchestrating and still worry about infrastructure.
• You can have dozens of functions tightly coupled and
delivered as a behemoth.
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• Javascript, C#, C# Script, Python, PHP, Batch, Powershell
• Timer-based processing
• SaaS Event Processing
• Full Serverless Architecture
• Real-Time Stream Processing
• Real-Time Bot Messaging
• Serverless mobile back-ends
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Creating our first “Hello World” function!
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• Anonymous
• Function Key
• Host Key
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• A “Run” file that containing the function code
• A “Function” file containing all service and trigger bindings and
parameters
• A “Project” file containing project assembly and NuGet
package references
• App Service settings, such as connection strings and API keys
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V1 Only on Windows
npm install -g azure-functions-core-tools
V2 with .NET Core on all platforms
npm install -g azure-functions-core-tools@core
Initialize your first function
func init MyFunctionProj
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Precompiled functions with C# and Visual Studio
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• local.settings.json will have all your local settings on
the dev machine.
• C# can also be read in your code as environment variables.
Use System.Environment.GetEnvironmentVariable
or ConfigurationManager.AppSettings.
• In JavaScript, use process.env
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• Extend the existing Azure App Service platform
• Go with “Consumption Plan” and be pure Serverless
• Deploy Functions Runtime on an on-prem location in your
Private Cloud.
• Deploy Functions to Google Cloud, AWS, and more.
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• Scale Controller : event-driven scaling through KEDA
• Runtime Controller : functions runtime in a Docker container
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Documentation
• https://goo.gl/TqGtMr
Azure Functions Runtime (Run on-prem)
• https://goo.gl/hV7KgJ
Documentation for the host.json file
• https://goo.gl/W6kcV7
More CLI commands to run functions locally
• https://goo.gl/PSkqet
Functions on Kubernetes
• https://drn.fyi/2ppbVxN
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http://daron.me | @daronyondem
Download slides here;
http://daron.me/decks