Microservices for the Masses

Spring Boot · JWT · JHipster

Brought to you by Matt Raible and Stormpath

Conway’s Law

Any organization that designs a system (defined

broadly) will produce a design whose structure is a copy

of the organization’s communication structure.

Melvyn Conway 1967

"Do one thing and do it well."

The Future?

You shouldn’t start with a microservices architecture.

Instead begin with a monolith, keep it modular, and split

it into microservices once the monolith becomes a

problem.

Martin Fowler March 2014

start.spring.io

Microservices are awesome, but they’re not free.

Les Hazlewood Stormpath CTO

Spring Boot Demo

JHipster by the numbers

+250 contributors+5400 Github stars+320,000 installations+100 companies officially using it

How to use JHipster

To install JHipster, you run an npm command:

$ npm install -g generator-jhipster

$ mkdir myapp && cd myapp $ yo jhipster

What’s Generated?

Spring Boot applicationAngularJS applicationLiquibase changelog filesConfiguration files

Security Screens

Several generated screensLogin, logout, forgot passwordAccount managementUser management

Useful for most applicationsPages must be tweakedUser roles will be added/extended

Provides good examples of working screensForms, directives, validation…

Admin Screens

MonitoringHealth

Spring Boot configurationSpring Security auditsLog management

Very useful in production

Liquibase

ThoughtWorks Radar

Securing your API

Choose the Right API Security ProtocolBasic API Authentication w/ TLS (formlerly known as SSL)OAuth1.0a, OAuth2

API Keys vs. Username/Password AuthenticationStore Your API Security Key securely

Use globally unique IDs (e.g. Url62)Avoid sessions, especially in URLs

How to Secure your API

https://www.youtube.com/watch?v=hdSrT4yjS1g

Learn more on the Stormpath blog

Anatomy of a JWT

Create a JWT in Java

String jwt = Jwts.builder() .setSubject("users/TzMUocMF4p")

.setExpiration(new Date(1300819380)) .claim("name", "Robert Token Man")

.claim("scope", "self groups/admins")

.signWith(

SignatureAlgorithm.HS256,

"secret".getBytes("UTF-8")

)

.compact();

Validating a JWT

String jwt = // get JWT from Authorization header Jws<Claims> claims = Jwts.parser()

.setSigningKey("secret".getBytes("UTF-8"))

.parseClaimsJws(jwt)

String scope = claims.getBody().get("scope") assertEquals(scope, "self groups/admins");

Better Secret

String b64EncodedSecret = "Yn2kjibddFAWtnPJ2AFlL8WXmohJMCvigQggaEypa5E=";

.signWith(SignatureAlgorithm.HS256,

TextCodec.BASE64.decode(b64EncodedSecret))

JWTs in Java for CSRF and Microservices

https://www.youtube.com/watch?v=QSYK4OCmycI

Learn more on the Stormpath blog

Microservices with JHipster

Microservices are not free, but you get a deep discount

on microservices with JHipster.

Matt Raible 2016

JHipster.next

Angular 2JUnit 5Spring 5 and ReactiveApache KafkaHTTP/2Progressive Web App Support

Do one thing and do it well.

Unix philosophy

This Presentation and Demos

https://github.com/mraible/microservices-for-the-masses

Image Credits

Fountain of colours - Paulius Malinovskis on FlickrPonte dell’Accademia at Sunrise - Trey Ratcliff on Stuck in CustomsConway’s Law - Martin Fowler and James Lewis on MicroservicesGood Morning Denver - Sheila Sund on FlickrMonoliths - Arches National Park on FlickrMexico - Trish McGinity on McGinity PhotoFuture - vivianhir on FlickrSpring Runoff - Ian Sane on FlickrThe memory Seeker, Santa Monica Pier, CA - Pacheco on FlickrSan Francisco By Night - Trish McGinity on McGinity Photo