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Mastering Concurrency in Python

You're reading from   Mastering Concurrency in Python Create faster programs using concurrency, asynchronous, multithreading, and parallel programming

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Product type Paperback
Published in Nov 2018
Publisher Packt
ISBN-13 9781789343052
Length 446 pages
Edition 1st Edition
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Concepts
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Author (1):
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Quan Nguyen Quan Nguyen
Author Profile Icon Quan Nguyen
Quan Nguyen
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Toc

Table of Contents (22) Chapters Close

Preface 1. Advanced Introduction to Concurrent and Parallel Programming FREE CHAPTER 2. Amdahl's Law 3. Working with Threads in Python 4. Using the with Statement in Threads 5. Concurrent Web Requests 6. Working with Processes in Python 7. Reduction Operators in Processes 8. Concurrent Image Processing 9. Introduction to Asynchronous Programming 10. Implementing Asynchronous Programming in Python 11. Building Communication Channels with asyncio 12. Deadlocks 13. Starvation 14. Race Conditions 15. The Global Interpreter Lock 16. Designing Lock-Based and Mutex-Free Concurrent Data Structures 17. Memory Models and Operations on Atomic Types 18. Building a Server from Scratch 19. Testing, Debugging, and Scheduling Concurrent Applications 20. Assessments 21. Other Books You May Enjoy

Chapter 16

What is the main approach to solving the problem that locks don't lock anything?

The main approach is to have the locks internally implemented within the data structure's class attributes and methods, so that external functions and programs cannot bypass those locks and access a shared concurrent object simultaneously.

Describe the concept of scalability, in the context of concurrent programming.

By the scalability of a program, we mean the changes in performance when the amount of tasks to be processed by the program increases. Andre B. Bondi defines the term scalability as, "the capability of a system, network, or process to handle a growing amount of work, or its potential to be enlarged to accommodate that growth."

How does a naive locking mechanism affect the scalability of a concurrent program?

The scalability of a simple lock-based data structure...

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