resilience4j

= Fault tolerance library designed for functional programming
:author: Robert Winkler and Bohdan Storozhuk
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== Introduction

Resilience4j is a lightweight fault tolerance library designed for functional programming.
Resilience4j provides higher-order functions (decorators) to enhance any functional interface,
lambda expression or method reference with a Circuit Breaker, Rate Limiter, Retry or Bulkhead.
You can stack more than one decorator on any functional interface, lambda expression or method reference.
The advantage is that you have the choice to select the decorators you need and nothing else.

Resilience4j 3 requires Java 21.

[source,java]
----
// Create a CircuitBreaker with default configuration
CircuitBreaker circuitBreaker = CircuitBreaker.ofDefaults("backendService");

// Create a Retry with default configuration
// 3 retry attempts and a fixed time interval between retries of 500ms
Retry retry = Retry.ofDefaults(