Designing Elixir Systems with OTP 1st Edition by James Edward Gray Ii, Bruce A Tate ISBN 1680506617 9781680506617

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Product details:
ISBN 10: 1680506617
ISBN 13: 9781680506617
Author: James Edward Gray Ii, Bruce A Tate

You know how to code in Elixir; now learn to think in it. Learn to design libraries with intelligent layers that shape the right data structures, flow from one function into the next, and present the right APIs. Embrace the same OTP that’s kept our telephone systems reliable and fast for over 30 years. Move beyond understanding the OTP functions to knowing what’s happening under the hood, and why that matters. Using that knowledge, instinctively know how to design systems that deliver fast and resilient services to your users, all with an Elixir focus.

Elixir is gaining mindshare as the programming language you can use to keep you software running forever, even in the face of unexpected errors and an ever growing need to use more processors. This power comes from an effective programming language, an excellent foundation for concurrency and its inheritance of a battle-tested framework called the OTP.

If you’re using frameworks like Phoenix or Nerves, you’re already experiencing the features that make Elixir an excellent language for today’s demands. This book shows you how to go beyond simple programming to designing, and that means building the right layers. Embrace those data structures that work best in functional programs and use them to build functions that perform and compose well, layer by layer, across processes. Test your code at the right place using the right techniques. Layer your code into pieces that are easy to understand and heal themselves when errors strike.

Of all Elixir’s boons, the most important one is that it guides us to design our programs in a way to most benefit from the architecture that they run on. The experts do it and now you can learn to design programs that do the same.

Designing Elixir Systems with OTP 1st Edition Table of contents:

1. Build Your Project in Layers

We Must Reimagine Design Choices

Choose Your Layers

Begin with the Right Datatypes

Build Your Functional Core

Establish Your Boundaries

Test Your Code

Plan Your Lifecycle

Invoke Your Workers

Do Fun Things with Big, Loud Worker-Bees

Part I. Do Fun Things…

2. Know Your Elixir Datatypes

Primitive Types

Lists

Maps and Structs

Strings

Tuples

Functions as Data

When to Leave Elixir

Know Your Elixir Datatypes

3. Start with the Right Data Layer

Access Patterns Shape Data Structures

Immutability Drives Everything

Try It Out

Start with the Right Data

4. Build a Functional Core

Organize Core Functions by Purpose

Compose a Quiz from Functions

Build at a Single Level of Abstraction

Keep the Left Margin Skinny

Try Out the Core

Build Your Functional Core

5. Test Your Core

Simplify Tests with Common Setup Functions

Improve the ExUnit Infrastructure

Provide Test Data with Fixtures

Prime Tests with Named Setups

Make Tests Repeatable

Compose Within Tests

Take Tests Beyond the Elixir Base

Test Your Functional Core

Part II. …with Big, Loud Worker-Bees

6. Isolate Process Machinery in a Boundary

Maintain Composition Through Uncertainty

Build Your Optional Server

Wrap the Server in an API

Prefer Call Over Cast to Provide Back Pressure

Extend Your APIs Safely

Wrap Your Core in a Boundary API

7. Customize Your Lifecycle

Understand the Lifecycle Building Blocks

Configure Applications to Start Supervisors

Start Per-User Processes with a Dynamic Supervisor

Touch Up the API Layer

Manage Your Lifecycles with Supervisors

8. Summon Your Workers

Know Your Motivations

Know Your Tools

Add a Proctor to Run Timed Quizzes

Summon Your Workers

9. Assemble Your Components

Add Persistence as a Boundary Service

Integrate MasteryPersistence into Mastery

Integrate Your OTP Dependencies into Phoenix

Organize Code for OTP Abstractions

Build Scenic Projects with Layers

Assemble Your Components

10. Test the Boundary

Tests Call the API as a User Would

Isolate the Proctor’s Boundary Concerns

Test Your Boundary

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Tags: James Edward Gray Ii, Bruce A Tate, Designing Elixir Systems, OTP