Awesome Microservices

A curated list of additional reading material following my talk at Zuhlke Days 2018.

Recommended Books

• Accelerate: The Science of Lean Software and Devops: Building and Scaling High Performing Technology Organizations by Nicole Forsgren et al: http://amzn.eu/d/8fteU0t
• Building Microservices by Sam Newman: http://amzn.eu/d/5VI7e5F
• Building Microservices Second edition by Sam Newman: http://amzn.eu/d/4d7JoEA
• Production-Ready Microservices by Susan Fowler: http://amzn.eu/d/gZPrzBf
• Site Reliability Engineering by Betsy Beyer et al: http://amzn.eu/d/57BjsHi
• REST in Practice: Hypermedia and Systems Architecture by Jim Webber et al: http://amzn.eu/d/1JN6obF
• RESTful Web APIs by Leonard Richardson et al: http://amzn.eu/d/c5RdRAo
• Testing Java Microservices by Alex Soto Bueno et al: http://amzn.eu/d/j9WTt21
• Elastic Leadership by Roy Osherove: http://amzn.eu/d/6GEAft4
• Threat Modeling: Designing for Security by Adam Shostack: http://amzn.eu/d/6S2hIVh
• Cloud Native: Designing change-tolerant software by Cornelia Davis: https://www.manning.com/books/cloud-native

Recommended Articles

• Testing Microservices, the sane way
• Your API versioning is wrong, which is why I decided to do it 3 different wrong ways
• Consumer Driven Contract Testing
• REST without PUT
• Trunk Based Development
• The Practical Test Pyramid
• ThoughtWorks: Technology Radar

Technologies we used in the Microservices

Microservice Framework

• Spring Boot
• RxJava
• Kotlin
• Arrow: Functional companion to Kotlin's Standard Library
• Jackson: JSON serialization/deserialization

Core Java Libraries

• Guava
• TotallyLazy: A complete functional environment for Java
• jOOL: The Missing Parts in Java 8

Caching

• Caffeine: A high performance caching library for Java 8

Circuit Breaker

• Hystrix or Resilienc4j

Monitoring

• Grafana
• Prometheus
• Prometheus push gateway
• Grafanalib: Python library for building Grafana dashboards
• Dropwizard Metrics or Micrometer

Networking

• Jersey HTTP client with reactive extensions
• OkHttp
• JsonPath: A Java DSL for reading JSON documents.

XML Parsing

• XOM

Testing

• Rest-assured
• Wiremock
• AssertJ: Fluent assertions for Java
• QuickTheories: Property based testing for Java 8
• Pitest: Mutation testing for Java
• Snodge: Randomly mutate JSON, XML, HTML forms, text and binary data for fuzz testing

Performance Testing

• Vegeta: HTTP load testing tool and library
• usl4j: a Java library for modeling system performance given a small set of real-world measurements.

Security

• Threat Modelling
• OWASP Top 10

Avoid stringly typed stystems

Rather than passing a lot of Strings around in your system, try to use strongly typed objects. ValueTypes can help with that.

import org.jetbrains.annotations.NotNull;

import java.util.Objects;

public abstract class ValueType<T extends Comparable<T>> implements Comparable<T> {

    public final T value;

    public ValueType(T value) {
        this.value = value;
    }

    @Override
    public int compareTo(@NotNull T other) {
        return value.compareTo(other);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        ValueType<?> valueType = (ValueType<?>) o;
        return Objects.equals(value, valueType.value);
    }

    @Override
    public int hashCode() {
        return Objects.hash(value);
    }
}

Example usage:

public class Username extends ValueType<String> {
    public Username(String value) { super(value); }
}

Username alice = new Username("alice@hotmail.com");