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
About the Author
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
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
Do Well. Do Good.
Authors have earned$10,909,613writing, 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
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
- #1
Learning Algorithms Through Programming and Puzzle Solving
Alexander S. Kulikov and Pavel PevznerThis book powers our MicroMasters program on edX and specialization on Coursera, one of the ten most popular computer science courses on Coursera. Over half a million students have tried to solve many programming challenges and algorithmic puzzles described in this book. We invite you to join them! See the webpage of the book for more details.
- #2
入門 日本語自然言語処理
Masato Hagiwara and Paul O'Leary McCann日本語テキストを処理したい全てのプログラマ・エンジニアの方へ。分かち書きなどの基本から、自然言語生成などの最新の話題までをカバー。動かして学べるコードや、参照文献も付いています。言語学や機械学習の知識が無くても問題ありません。
- #3
Functional Programming Made Easier
Charles ScalfaniA Functional Programming book from beginner to advanced without skipping a single step along the way.
In my 40 years of programming, I've felt that programming books always let me down, especially Functional Programming books. So, I wrote the book I wish I had 5 years ago.
Functional Programming will never be easy, but it can be easier.
- #4
Cloud Strategy
Gregor Hohpe“Strategy is the difference between making a wish and making it come true.” A successful migration to the cloud can transform your organization, but it shouldn’t be driven by wishes. This book tells you how to develop a sound strategy guided by frameworks and decision models without being overly abstract nor getting lost in product details.
- #5
Ansible for DevOps
Jeff GeerlingAnsible is a simple, but powerful, server and configuration management tool. Learn to use Ansible effectively, whether you manage one server—or thousands.
- #6
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.
- #7
Scrum Product Ownership - Navigating the Forest AND the Trees, 3'rd Edition
Robert GalenIn 2009, I published Scrum Product Ownership - Ed. 1. Then the 2'nd Ed. in 2013. This is the 3'rd edition, celebrating the 10th anniversary of the original book. It's evolved from a beginners guide to be a more balanced reference for beginners, practitioner, and expert Product Owners.
- #8
Functional event-driven architecture: Powered by Scala 3
Gabriel VolpeExplore the event-driven architecture (EDA) in a purely functional way, mainly powered by Fs2 streams in Scala 3!
Leverage your functional programming skills by designing and writing stateless microservices that scale, powered by stateful message brokers.
- #9
Introducing EventStorming
Alberto BrandoliniThe deepest tutorial and explanation about EventStorming, straight from the inventor.
- #10
Agile Testing Condensed Japanese Edition
Yuya Kazama, Janet Gregory, and Lisa CrispinJanet GregoryとLisa Crispinによる2019年9月発行の書籍『Agile Testing Condensed』の日本語翻訳版です。アジャイルにおいてどのような考えでテストを行うべきなのか簡潔に書かれています！
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 Indie Python Extravaganza
5 Books
The Indie Python Extravaganza! A collection of books that will help you to improve your knowledge of the Python programming language one page at a time. Join four indie authors in a journey from the basics of Python to the structure of production-ready systems, going through the core features of the language, some intermediate projects and a... - #3
CCIE Service Provider Ultimate Study Bundle
2 Books
Piotr Jablonski, Lukasz Bromirski, and Nick Russo have joined forces to deliver the only CCIE Service Provider training resource you'll ever need. This bundle contains a detailed and challenging collection of workbook labs, plus an extensively detailed technical reference guide. All of us have earned the CCIE Service Provider certification... - #4
Modern C++ Collection
3 Books
Get All about Modern C++C++ Standard Library, including C++20Concurrency with Modern C++, including C++20C++20Each book has about 200 complete code examples. Updates are included. When I update one of the books, you immediately get the updated bundle. You can expect significant updates to each new C++ standard (C++23, C++26, .. ) and also... - #6
Abandon Your Job - Leaving the Rat Race with Python
8 Books
Now, get all the great Python and Freelancing books from finxter.com in one single bundle!Coffee Break Python - All Python BasicsCoffee Break Python Workbook - Practice the basics of PythonCoffee Break Python Mastery Workouts - Practice advanced Python conceptsCoffee Break Python Slicing - All about SlicingCoffee Break Python NumPy - Get started... - #7
10 Books Bundle - A New Career in Tech 🚀
10 Books
Do you want to create yourself a new and profitable skillset - in one year or less? Do you want to position yourself on the right side of change finally? Do you want to work from home and set your own work schedule while choosing fun and interesting coding projects? Software developers and freelance developersearn six figuresin the US, according... - #8
The Python Craftsman
3 Books
The Python Craftsman series comprises The Python Apprentice, The Python Journeyman, and The Python Master. The first book is primarily suitable for for programmers with some experience of programming in another language. If you don't have any experience with programming this book may be a bit daunting. You'll be learning not just a programming... - #10
Pattern-Oriented Memory Forensics and Malware Detection
2 Books
This training bundle for security engineers and researchers, malware and memory forensics analysts includes two accelerated training courses for Windows memory dump analysis using WinDbg. It is also useful for technical support and escalation engineers who analyze memory dumps from complex software environments and need to check for possible...
