Effect Oriented Programming
Effect Oriented Programming
A Paradigm for Creating Reliable, Adaptable, Testable Systems - Using Scala and ZIO
About the Book
Effects are the unpredictable elements in your programs.
Concerns like network communication or user interaction might seem easy, but they are devilishly difficult to get right. The pristine world of algorithms devolves into the gory reality of failures and inconsistency.
Traditionally, we've coped with Effects incompletely and often unwittingly. Programs have been difficult to build, adapt, and maintain.
Discover a groundbreaking approach to software development using Effect Systems to control the unpredictable elements in your systems. We focus on practical techniques you can apply immediately, making complex concepts accessible to all developers. You'll learn resilient system development in a straightforward, pragmatic way, using simplified code examples and clear explanatory prose.
About the Authors
Table of Contents
- 1:Preface
- 1.1:Scala 3 & ZIO
- 1.2:Code Examples
- 1.3:Acknowledgements
- 2:Introduction
- 2.1:Types of Effects
- 2.2:Motivation
- 2.3:The Pursuit of Adaptability
- 2.4:What’s Stopping Us?
- 2.5:Managing Effects
- 2.6:Improving Your Life
- 3:Superpowers
- 3.1:Retry
- 3.2:Modifying Failure
- 3.3:Timeout
- 3.4:Fallback
- 3.5:Finalization
- 3.6:Timing
- 3.7:Filtering
- 3.8:Effects are the Sum of Their Parts
- 3.9:Deferred Execution
- 4:Initialization
- 4.1:Effects and Dependencies
- 4.2:Defining Dependencies
- 4.3:Effects as Dependencies
- 4.4:Providing Dependencies to Effects
- 4.5:Dependencies With Dependencies
- 4.6:Naming Dependencies
- 4.7:Sharing Dependencies
- 4.8:The Dependency Graph
- 4.9:Dependency Cleanup
- 4.10:Construction Failure
- 4.11:External Configuration
- 5:Testing
- 5.1:Basic ZIO Testing
- 5.2:Test Dependencies
- 5.3:Testing Built-Ins
- 6:Failure
- 6.1:Throwing Exceptions
- 6.2:The Functional Solution
- 6.3:Failure Types
- 6.4:Short-Circuiting
- 6.5:Handling Failures
- 6.6:Multiple Failure Types
- 6.7:Handling Thrown Exceptions
- 7:Composability
- 7.1:Composing with Effects
- 7.2:Future
- 7.3:Option
- 7.4:Either
- 7.5:AutoCloseable
- 7.6:Try
- 7.7:Exceptions
- 7.8:Slow Functions
- 7.9:Composing an Application
- 7.10:Effects are Values
- 8:Shared State
- 8.1:Unreliable State
- 8.2:Reliable State
- 8.3:Effects Are Not Allowed
- 8.4:Sneaking in Side Effects
- 8.5:Reliable Effects
- 9:Resilience
- 9.1:Caching
- 9.2:Rate Limits
- 9.3:Constraining Concurrent Requests
- 9.4:Circuit Breaking
- 9.5:Reducing Worst-Case Latency
- 9.6:Test Resilience
- 9.7:The Ecosystem of Effects
- 1:Preface
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