Service FabricResult of an experiment

Stéphane Erbrech

@serbrech

Stéphane ErbrechWebstep

02/12/2016 2

Twitter : @serbrechhttp://www.erbrech.com/blog

Origins of this experimentMicroservicesDevOpsConcepts : Service DiscoveryConcepts : Reverse ProxyDemosChallengesConclusion

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Workers CompensationContact

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Bang Head Here

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Think locally, Act Globally

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The road to Microservices

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1 year of “Microservices”

Which module does this functionality fit?Add codeMergeGet a coffee

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1 year of “Microservices”How/where do we host this service? Where?Cloud? Which product? How to deploy? Monitor? communicate with The Monolith?Business case validation?Configuration management? (that one is a biggy)On premise? IIS Setup?Authentication/Authorization?Logging?What DB can/should we use? SqlServer, Ravendb, DocumentDB?Versioning?Test environments?CI setup?Deployment scripts? Internet facing services?What about security?Etc, …

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New services nearly every release, every week

150 git repos

1 person can’t assess the entire system

1 year of “Microservices”

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1 year of “Microservices”

# Windows services

# IIS processes

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1 year of “Microservices”

40 Windows services (doubled)

52 IIS processes (doubled)

X2 (x4)

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Local Simplicity vs

Architecture/Infrastructure Complexity

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Scalability

Highly Available24/7

Zero Down Time DeploysCloud

Serverless

DevOps

Blue Green

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Essentially 1 server

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Concepts

Service Discovery

Decouple the who from the where

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Service A Service B

config

Communicate

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Service Discovery

Service A Service B

Config

Communicate

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Service DiscoveryService Discovery

Service Discovery

Service A Service BCommunicate

Highly available, Consistent

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Service DiscoveryService Discovery

Service Discovery

Service A Service BCommunicate

Highly available, Consistent

Service AService A

Service BService B

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A

B

B

A

SD

A

B

A

SD

A

SD

Reverse Proxy

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???

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A

B

B

A

SD

A

B

A

SD

A

SD

Service DiscoveryService DiscoveryService Discovery

Service A Service BService A

Service AService B

Service B

R

Reverse proxy

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R

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A

B

B

A

SD

A

B

A

SD

A

SD

Service Fabric

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Cluster management for microservices

Windows or Linux

Process deployment and orchestration

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Stateless / Stateful services

Partitions

Health monitoring

Actors

Containers

Web Apps

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WCF

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Windows Services

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Minimize (negative) impact, Maximize benefits

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Can we do this?

What would this mean for developers?

What would it mean for DevOps?

What does it mean for the Lifecycle?

What do we get from this?

So, can we have the cake, and eat it too?

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Challenges

MSMQ : bound to a machineDistributed Transactions

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queue

Server1

NSB

queue

Server2

NSBSubscribe(msg@server1)

Publish(queue@server2

Send(queue@Server2)

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queue

Server1

NSB

queue

Server2

NSB

Broker

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queue

Server1

NSB

queue

Server2

NSB

Broker

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DTC

DTC (and other 2PC protocols) require HA and low latency between resources.

Incompatible with the cloud

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Outbox and Deduplication Pattern

“Using Outbox allows for running endpoints with similar reliability to DTC while not actually using DTC.”

At least once + deduplication

DTC : Msmq/NServiceBus

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https://docs.particular.net/nservicebus/outbox/

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DTC : WCF

No tricks there unfortunately

Move data

Replace with messaging

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Wrap up

Service Fabric ticks all the boxesCloud vs On-premNot invasiveFuture proof (cloud, container, no vendor lock-in)

Remove DTC and MSMQ

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Thank youMicroservices article

http://www.erbrech.com/blog/2016/10/27/What-we-dont-tell-you-about-microservices.html

Hosting a web app In Service Fabric

http://www.erbrech.com/blog/2016/11/01/Hosting-a-web-application-in-Service-Fabric.html

Service Fabric Overview

https://docs.microsoft.com/en-us/azure/service-fabric/service-fabric-overview

Twitter : @serbrechhttp://www.erbrech.com/blog