Building a System in Clojure (and ClojureScript)
Building a System in Clojure (and ClojureScript)
About the Book
This book is about building a complex system in Clojure and ClojureScript. It started out as a blog series about my BirdWatch application, a side project for reasoning about a live stream of tweets coming in from the Twitter Streaming API and visualized in a web application that is written in ClojureScript.
In the book, we will follow the data and watch how it is transformed in different parts of the application until it finally triggers the user interface to change within a few hundred milliseconds after a tweet has been tweeted.
The price for this book will increase as the writing progresses.
Feedback during the writing process is much appreciated. There's a Google Group for this purpose.
Only major new releases will be announced by email. Please follow me on Twitter to be informed about more frequent updates: @matthiasnehlsen. Or, if you want to know what I'm working on at any moment in time, follow me on GitHub. The book is on there as well, just like the project that I am writing the book about.
Cheers, Matthias
Table of Contents
-
- 1. Introduction
- 2. Example application: Counter
-
3. WebSocket Latency Visualization Example
- 3.1 :client/mouse-cmp
- 3.2 :server/ptr-cmp
- 3.3 example.core on client side
- 3.4 example.core on server side
- 3.5 Application Reload from the REPL
- 3.6 :client/store-cmp
- 3.7 :client/histogram-cmp
- 3.8 matthiasn.systems-toolbox-ui.charts.histogram
- 3.9 matthiasn.systems-toolbox-ui.charts.math
- 4. Appendix
- 5. Introduction
- 6. What’s in this book?
- 7. Why am I writing this book?
- 8. How to use this Book – Update February 2016
-
9. Systems Thinking
- 9.1 Intervention points
-
10. Old Server-side Architecture
- 10.1 Architectural Overview
- 10.2 Scaling out
- 10.3 Application Initialization
-
11. Server-side: TwitterClient
-
11.1 Architectural Overview
- 11.1.1 Transducers
- 11.2 TwitterClient Component
- 11.3 TwitterClient - SwitchBoard Component
- 11.4 TwitterClient - Percolation Component
- 11.5 TwitterClient - Persistence Component
-
11.6 TwitterClient - InterOp Component
- 11.6.1 Redis Pub/Sub with Carmine
- 11.6.2 Performance of Redis
-
11.1 Architectural Overview
-
12. Server-side: MainApp
- 12.1 Architectural Overview
- 12.2 MainApp - InterOp Component
- 12.3 MainApp - SwitchBoard Component
- 12.4 MainApp - Persistence Component
- 12.5 MainApp - Percolation Component
- 12.6 WebSocket Communication Component
- 12.7 Http Component
- 13. Server-side Conclusion
-
14. Old Client-side Architecture
- 14.1 React.js
- 14.2 Reagent
- 14.3 Ownership of Application State
- 14.4 Constraints
- 14.5 Core Namespace
- 14.6 WebSocket Communication
-
14.7 Application State
- 14.7.1 The birdwatch.state.data namespace
- 14.7.2 The birdwatch.state.initial namespace
- 14.7.3 The birdwatch.state.comm namespace
- 14.7.4 The birdwatch.state.search namespace
- 14.7.5 The birdwatch.state.proc namespace
- 14.7.6 State summary
-
14.8 User Interface
- 14.8.1 React.js, Immutable Data and Reagent
- 14.8.2 Interacting with Application State from the UI
- 14.8.3 Simple Reagent Components
- 14.8.4 Reagent Components for Tweets
- 14.8.5 The birdwatch.ui.util namespace
- 14.8.6 Pure.css
-
14.9 Charts
- 14.9.1 Timeseries Data
- 14.9.2 Timeseries Chart
- 14.9.3 Word Cloud Chart
- 14.9.4 Word Count Statistics
- 14.9.5 Wordcount Trends Chart (with Linear Regression)
- 14.10 Summary
-
15. The systems-toolbox library
- 15.1 Introduction
-
16. The systems-toolbox-ui library
- 16.1 Introduction
- 16.2 React
- 16.3 Redux
-
16.4 Counter example
- 16.4.1 Better UI development with Figwheel
-
17. Monitoring
- 17.1 Inspect
-
18. Testing
- 18.1 Unit Tests
- 18.2 Integration Tests
- 18.3 Continuous Integration
-
18.4 Hosted CI
- 18.4.1 TravisCI
- 18.4.2 CircleCI
- 18.4.3 Conclusion
-
18.5 Testing the systems-toolbox library
- 18.5.1 Porting existing tests to cljc, running tests with doo
- 18.5.2 Promises for testing in ClojureScript?
- 18.5.3 Running tests in the browser / PhantomJS
- 18.5.4 Performance considerations
- 19. Operational Insight
-
20. Load Testing and Optimization
- 20.1 Performance and Load Characteristics
- 20.2 Optimization and Environment
-
21. Deployment
- 21.1 Docker Containers
- 21.2 Wildfly / Deploying a WAR file
- 22. Appendix
- Notes
Authors have earned$9,882,857writing, publishing and selling on Leanpub, earning 80% royalties while saving up to 25 million pounds of CO2 and up to 46,000 trees.
Learn more about writing on Leanpub
The Leanpub 45-day 100% Happiness Guarantee
Within 45 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
See full terms
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers), EPUB (for phones and tablets) and MOBI (for Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.
Learn more about Leanpub's ebook formats and where to read them
Top Books
C++ Best Practices
Jason TurnerLevel up your C++, get the tools working for you, eliminate common problems, and move on to more exciting things!
Functional Design and Architecture
Alexander GraninSoftware Design in Functional Programming, Design Patterns and Practices, Methodologies and Application Architectures. How to build real software in Haskell with less efforts and low risks. The first complete source of knowledge.
OpenIntro Statistics
David Diez, Christopher Barr, Mine Cetinkaya-Rundel, and OpenIntroA complete foundation for Statistics, also serving as a foundation for Data Science.
Leanpub revenue supports OpenIntro (US-based nonprofit) so we can provide free desk copies to teachers interested in using OpenIntro Statistics in the classroom and expand the project to support free textbooks in other subjects.
More resources: openintro.org.
R Programming for Data Science
Roger D. PengThis book brings the fundamentals of R programming to you, using the same material developed as part of the industry-leading Johns Hopkins Data Science Specialization. The skills taught in this book will lay the foundation for you to begin your journey learning data science. Printed copies of this book are available through Lulu.
C++20
Rainer GrimmC++20 is the next big C++ standard after C++11. As C++11 did it, C++20 changes the way we program modern C++. This change is, in particular, due to the big four of C++20: ranges, coroutines, concepts, and modules.
I am a Software Engineer and I am in Charge
Alexis Monville and Michael DoyleI am a Software Engineer and I am in Charge is a real-world, practical book that helps you increase your impact and satisfaction at work no matter who you work with.
In the book, we will follow Sandrine, a fictional character who learns to think in a new way enabling her to take a different course of action.
Invest In Digital Health - The Medical Futurist's Guide
Dr. Bertalan MeskoArtificial Intelligence and Digital Health are booming. In this book, we explain why now it's a good time to invest in Digital Health and give recommendations on where to invest by looking at the top 24 technological trends we find the most promising.
Atomic Kotlin
Bruce Eckel and Svetlana IsakovaFor both beginning and experienced programmers! From the author of the multi-award-winning Thinking in C++ and Thinking in Java together with a member of the Kotlin language team comes a book that breaks the concepts into small, easy-to-digest "atoms," along with exercises supported by hints and solutions directly inside IntelliJ IDEA!
The Hundred-Page Machine Learning Book
Andriy BurkovEverything you really need to know in Machine Learning in a hundred pages.
Mastering STM32
Carmine NovielloWith more than 600 microcontrollers, STM32 is probably the most complete ARM Cortex-M platform on the market. This book aims to be the first guide around that introduces the reader to this exciting MCU portfolio from ST Microelectronics and its official CubeHAL.
Top Bundles
- #1
Software Architecture for Developers: Volumes 1 & 2 - Technical leadership and communication
2 Books
"Software Architecture for Developers" is a practical and pragmatic guide to modern, lightweight software architecture, specifically aimed at developers. You'll learn:The essence of software architecture.Why the software architecture role should include coding, coaching and collaboration.The things that you really need to think about before... - #2
The Future of Digital Health
6 Books
We put together the most popular books from The Medical Futurist to provide a clear picture about the major trends shaping the future of medicine and healthcare. Digital health technologies, artificial intelligence, the future of 20 medical specialties, big pharma, data privacy and how technology giants such as Amazon or Google want to conquer... - #3
Cisco CCNA 200-301 Complet
4 Books
Ce lot comprend les quatre volumes du guide préparation à l'examen de certification Cisco CCNA 200-301. - #4
CCDE Practical Studies (All labs)
3 Books
CCDE lab - #5
"The C++ Standard Library" and "Concurrency with Modern C++"
2 Books
Get my books "The C++ Standard Library" and "Concurrency with Modern C++" in a bundle. The first book gives you the details you should know about the C++ standard library; the second one dives deeper into concurrency with modern C++. In sum, you get more than 600 pages full of modern C++ and about 250 source files presenting the standard library... - #6
Modern Management Made Easy
3 Books
Read all three Modern Management Made Easy books. Learn to manage yourself, lead and serve others, and lead the organization. - #7
Programming with Ease
3 Books
Alle drei Bände der Serie Programming with Ease in einem Paket. Darin findest du alles, was ich dir zu den wichtigsten Phasen der Softwareentwicklung im Hinblick auf Clean Code Development für langfristig hohe Produktivität sagen kann.Im Band Slicing findest du die Anforderungsanalyse im Rahmen eines iterativ-inkrementellen Vorgehensmodells aus... - #8
Vagrant Ansible
2 Books
Unveil the power of Ansible and Vagrant with this bundle at a special price. You'll have everything you need to get started with Vagrant - learn the basics and how to create your virtual development environments, using Ansible as provisioner! About Vagrant Cookbook Vagrant Cookbook is a complete guide to get started with Vagrant and create your... - #9
Mastering Containers
2 Books
Docker and Kubernetes are taking the world by storm! These books will get you up-to-speed fast! Docker Deep Dive is over 400 pages long, and covers all objectives on the Docker Certified Associate exam.The Kubernetes Book includes everything you need to get up and running with Kubernetes! - #10
Growing Agile: The Complete Coach's Guide
7 Books
Growing Agile: Coach's Guide Series This bundle provides a collection of training and workshop plans for a variety of agile topics. The series is aimed at agile coaches, trainers and ScrumMasters who often find themselves needing to help teams understand agile concepts. Each book in the series provides the plans, slides, handouts and activity...