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Clojure High Performance Programming, Second Edition - Second Edition

By : Shantanu Kumar
Book Image

Clojure High Performance Programming, Second Edition - Second Edition

By: Shantanu Kumar

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Clojure High Performance Programming, Second Edition - Second Edition
Shantanu Kumar
Sep, 2015 | 198 pages
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Table of Contents (15 chapters)
Clojure High Performance Programming Second Edition
Clojure High Performance Programming Second Edition
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Performance by Design
Performance by Design
Use case classification
A structured approach to the performance
The performance vocabulary
The latency numbers that every programmer should know
Summary
2
Clojure Abstractions
Clojure Abstractions
Non-numeric scalars and interning
Identity, value, and epochal time model
Persistent data structures
Sequences and laziness
Transducers
Transients
Performance miscellanea
Summary
3
Leaning on Java
Leaning on Java
Inspecting the equivalent Java source for Clojure code
Numerics, boxing, and primitives
Arrays
Reflection and type hints
Using array/numeric libraries for efficiency
Resorting to Java and native code
Summary
4
Host Performance
Host Performance
The hardware
The Java Virtual Machine
Measuring latency with Criterium
Summary
5
Concurrency
Concurrency
Low-level concurrency
Atomic updates and state
Asynchronous agents and state
Coordinated transactional ref and state
Dynamic var binding and state
Validating and watching the reference types
Java concurrent data structures
Concurrency with threads
Clojure parallelization and the JVM
Parallelism with reducers
Summary
6
Measuring Performance
Measuring Performance
Performance measurement and statistics
Performance testing
Performance monitoring
Profiling
Summary
7
Performance Optimization
Performance Optimization
Project setup
Identifying performance bottlenecks
Profiling code with VisualVM
The Monitor tab
Performance tuning
Summary
8
Application Performance
Application Performance
Choosing libraries
Logging
Data sizing
Resource pooling
I/O batching and throttling
Precomputing and caching
Concurrent pipelines
Applying back pressure
Performance and queueing theory
Summary
Index
Index

About the Author

Shantanu Kumar is a software developer living in Bengaluru, India. He works with Concur Technologies as a principal engineer, building a next-generation stack in Clojure. He started learning computer programming when he was at school, and has dabbled in several programming languages and software technologies. Having used Java for a long time, he discovered Clojure in early 2009 and has been a fan of it ever since.

When not busy with programming or reading up on technical stuff, he enjoys reading non-fiction and cycling around Bengaluru. Shantanu is an active participant in The Bangalore Clojure Users Group, and contributes to several open source Clojure projects on GitHub. He is also the author of the first edition of the book Clojure High Performance Programming, Packt Publishing.

I am grateful to my colleagues, Saju Pillai and Vijay Mathew, at Concur India for imparting marathon performance analysis/tuning sessions. I appreciate the input received from Andy Fingerhut and Zach Tellman on certain topics during the course of writing the second edition of the book. I also want to thank the technical reviewers and the team at Packt for their valuable input and support.

Writing this book has been an arduous task. I want to thank my family for putting up with me while I was immersed in this book for far too many days and weekends. If not for their support, I would not have been able to do justice to the book.

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