Enhancements

• Support Micronaut 4
• Issue #1962: Added apache commons configuration based registries

Bugs

• Issue #2052: Support class name using SpEL expression at @Circuitbreaker name field enhancement
• Issue #2040: ThreadPoolBulkhead always uses the "default" configuration in micronaut application bug
• Issue #2037: Removing stale retry configurations from configuration map enhancement
• Issue #1625: New module that collects overall information enhancement
• Issue #1565: Do not retry if IntervalFunction returns interval less than 0
• Issue #1865: Timelimiter always uses the "default" configuration in micronaut application
• Issue #2038: java.lang.StackOverflowError due to infinite loop in CircuitBreakerStateMachine$OpenState.tryAcquirePermission

Enhancements

• Fallbackmethod supports usage of annotations in Spring
• Issue #1955: RecordResultPredicate can be configured in Spring Boot config now

Bugs

• Issue #1980: Fixed API regression following removal of io.vavr dependencies in v2.0.0

Bugs

• Issue #1835: Fixed CircuitBreaker CheckedSupplier and CheckedFunction decorator not opening on recordResultPredicate

Enhancements

• Support Spring Boot 3 by adding resilience4j-spring-boot3 and resilience4j-spring6

• Issue #1787: Apply Spring Boot customizers even if there is no instance entry in the config file

Bugs

• Issue #1825: Aspectj must not be mandatory in Spring Boot modules

• Issue #1809: Fixed concurrency issue in Cache module

• Removed Vavr as a dependency
• Upgraded to Java 17
• Upgraded to Kotlin 1.7.20
• Upgraded to Spring Boot 2.7
• Upgraded to Micronaut 3.7.3

Enhancements

• Issue #1414: SpEL expressions support passing runtime method arguments to bean methods

Bugs

• Issue #1268: Stream events from springboot2 stopped SSE after the 1st message.
• Issue #1372: Kotlin Timelimiter executeSuspendFunction throws TimeoutException after coroutine is canceled
• Issue #1432: CircuitBreaker permits more calls then expected when switching from OPEN to HALF_OPEN state
• Issue #1437: Event can be published twice when CircuitBreaker in MetricsOnlyState

Enhancements

• RateLimiter: Reduce RateLimiter memory footprint of high cardinality keys #1221
• CircuitBreaker: When waitDurationInOpenState and waitIntervalFunctionInOpenStat are used together, waitDurationInOpenState will be overridden #1214
• TimeLimiterAspect does not refresh static timeLimiterExecutorService on Spring context shutdown and restart #1203
• CircuitBreaker: Record a failure on result #384
• Added support for Micronaut
• Updated Spring Boot from 2.3.0.RELEASE to 2.4.1
• Updated Reactor from 3.3.0.RELEASE to 3.4.0
• Updated Spring Cloud Context from 2.2.2.RELEASE to 3.0.0
• Updated Spring Framework from 5.2.6.RELEASE to 5.3.2
• Updated Spring Boot Open Feign from 2.2.2.RELEASE to 2.2.6.RELEASE
• Updated Kotlin Coroutines from 1.3.2 to 1.4.2
• Updated Dropwizard Metrics from 3.2.6 to 4.1.16
• Prevent the decoration of default methods in feign client #1245
• Added RateLimiter.drainPermissions method #1240
• Added failAfterMaxAttempts flag to RetryConfig and a new MaxRetriesExceededException #1293

Bugs

• NullPointerException requesting actuator metrics for retries using retryOnResult #1205
• CircuitBreakers events endpoint doesn't work after replacing instances at runtime #1116

Bugs

• Springboot application failing on startup with version 1.6.0 #1192

Enhancements

• RetryConfig.DEFAULT_MAX_ATTEMPTS should be public #1180
• Circuitbreaker doesn't open when nested TimeLimiter throws TimeOutCancellationException #1123
• Enhance Server Side Events /circuitbreaker/events #1076
• CallNotPermittedException should contain circuit breaker name (and possibly other information) #1062
• Retry: Exponential backoff with constant behaviour after certain time #1044
• Respecting the clock set in the CircuitBreakerStateMachine for detecting slow calls #734

Bugs

• Circuit breaker stuck in HALF_OPEN state #935
• Circuit breaker global fallback seems to not work when annotated method has more than 1 parameter #1174
• Timelimiter metrics not calculated when using resilince4j-kotlin #1168
• Problem with registering metrics for more than one circuit breaker #1131
• ConcurrentModificationException warning log while consuming events #1115
• CircuitBreakerConfig.Builder.waitDurationInOpenState() false documentation of when the function throws exception #1092

• Issue #855: Updated resilience4j-spring-boot2 to 2.3.0.RELEASE
• Issue #855: Updated resilience4j-spring-cloud2 to 2.2.2.RELEASE
• Issue #942: Introduced new CB metric "notPermittedCalls"
• Issue #964: Added Kotlin DSL for building *Config and *Registry classes
• Issue #979: Added fairCallHandlingEnabled flag to BulkheadConfig which controls whether FairSync or NonfairSync should be used in the Semaphore.
• Issue #982: Added support to configure exponential random backoff via Spring config
• Issue #991: Fixed bug that auto transition to half_open happens even if the state is forced open.
• Issue #1000: Added toString to CircuitBreakerConfig
• Issue #1003: Fixed bug that CircuitBreaker tries to obtain permission twice in circuitBreaker.decorateEitherSupplier()