microservices practitioner summit jan '15 - maximizing developer productivity in a...

MAXIMIZINGDeveloper Productivity

in a

Microservices EnvironmentTom Petr // @tpetr

Over 100 engineers

Over 1,600 deployables

~300 daily deploys

From git push to Productionin about 10 minutes

Engineers own the end-to-end success of their products.

They make most tech decisions;they wear the pagers.

We don’t have an “ops” team.

PaaS is all aboutempowering engineers.

Give them good toolsand a solid foundation so they

can focus on what they do best.

Microservices allow us to scale and move fast.

Maps well to our teams.

Minimizes merge conflicts.

Compartmentalizes failures.

✨ Everyone works on their own thing! ✨

AWS

Java

HTTP + JSON

Reliable Message Delivery

Make HTTP easy

Decouple code and configuration

@Inject @Named(“my.config.value”) private Value<String> myConfigValue;

myConfigValue.get();

Monitor everything!

Decouple build process from build system

Decouple frontend from backend

Automate deployments and infrastructure

Before:1. Develop locally2. Provision QA hardware3. Deploy via local Python script4. Provision PROD hardware5. Deploy via local Python script…6. Replace hardware at 4am

After:1. Develop locally2. Deploy to QA3. Test4. Deploy to PROD5. 🎉

Worry about some optimizations later

Invest inonboarding early

Things will fall through the cracks

0

100

200

300

400

Sept 2010 July 2011 May 2012 Mar 2013 Jan 2014 Nov 2014 Sept 2015

Unique Web APIs Active Developers

0

75

150

225

300

May 2012 Jan 2013 Sept 2013 May 2014 Jan 2015 Sept 2015

Average monthly commits per user

0

13

26

39

52

May 2013 Sep 2013 Jan 2014 May 2014 Sep 2014 Jan 2015 May 2015

Users operating infrastructure

0

200

400

600

800

May 2013 Sep 2013 Jan 2014 May 2014 Sep 2014 Jan 2015 May 2015

App Servers Mesos Slaves

You don’t have to build this all from scratch!

Thanks!

github.com/HubSpot