Building Microservices with Azure Functions

Justin Maurer Software Developer - Modern Apps

@Jmnethttps://github.com/jmdotnet

The Evolution Of Computing at Scale

Mainframes

1950-1980

On Premise / Co-location

1980-1990

Cloud / IaaS

2000s

Cloud / PaaS

2010s

Cloud Computing Today (2017)

Serverless? Where were going we don’t need no servers.

Serverless Computing Architecture

Abstraction of Servers

“Serverless”

Function as a Service

(FaaS)

Scaling Autopilot

The Self Driving Car of Cloud Computing

Ok back to reality…. Things to consider with Serverless Architecture

Loss of control, vendors will put constraints on their services to deliver on reliability and performance goals. If you are processing a large amount of data (i.e. millions of rows), you will want to break that up

into smaller chucks so that it can be processed within a cost affective timeframe. Assume your code always has the potential to run in parallel as it can with dynamic scaling. Its bleeding edge, the tooling is limited (Azure Functions local development is in Beta, No IntelliSense in

VS) Serverless is not magic – its just a way to have some experts build the parts of your app that you don’t

specialize in.

Azure Functions

Microsoft “Serverless” offering, Lightweight, Makes composing Cloud Apps easy

Event-Driven, InstantAuto-Scaling

Pay only when your Code runs

Azure Functions at a Glance

Serverless (FaaS) Binding to Services Language SupportServerless event based processing, auto scales for you based on your actual usage.

App developers focus on their business logic / UX. Less on boilerplate and scaling complex infrastructures

Announced at Build 2016Went GA November 2016

Azure Services (Document DB, Logic Apps, Storage, Service Bus, Event Hub)

Github, Sendgrid, Twilio, Dropbox, OneDrive, Box

HTTP & Webhooks

C#, Node.js, F#, Python, PHP, Batch and more to come

Web apps

Web apps that scale with your business

Mobile apps

Build mobile apps for any device

API apps

Easily build and consume APIs in the cloud

Functions

A serverless event based experience to accelerate your development.

Part of App Services

Microservice Architecture

• A Single application as a suite of small services.

• Each running in its own process and communicating with lightweight mechanisms

• The focus is on solving business problems, adding capabilities, competitive advantage – not writing boilerplate code

• Each Service can have its own lifecycle, deployments and scaling

Samples of Microservices with Azure Functions

Demo

Hello World!

Demo

Image Processing

Demo

Hue app for Google Home