Release Notes

• Initial version

Version 0.1.1

Version 0.1.2

Version 0.1.3

Version 0.1.4

Version 0.1.5

Version 0.1.6

Version 0.1.7

• Removed Dropwizard Metrics, because its a too heavy dependency for such a lightweight library.

• Changed the way exceptions can be handled. You have to provide a Predicate now instead of a list of exceptions to ignore.

• The CircuitBreaker is based on a Ring Bit Buffer and a failure rate now.

Version 0.3.1

Version 0.3.2

Version 0.3.3

Version 0.3.4

• Updated javaslang from 2.0.0-RC4 to 2.0.1

• Updated javaslang from 2.0.1 to 2.0.2

• Fixed issue #6: The CB changes to OPEN state when the failure rate is above (>) the threshold, but it should be above or equal (>=).

• Updated javaslang from 2.0.2 to 2.0.4

• Added rxjava 2.0.1 as a dependency

• Issue #13: CircuitBreaker should publish events as an event stream and clients should be able to subscribe

• Issue #10: Reorder arguments in decorator methods

• PR #19: Add a backoff function feature, to modify the waiting interval between failures

• Renamed root package from javaslang to io.github.resilience4j, because the project had to leave the Javaslang GitHub organisation

Version 0.7.1

• Added the SingleOperator interface to CircuitBreakerOperator

• Issue #12: Added a new RateLimiter decorator

• Added a new Cache decorator

• Removed CacheEventConsumer and CircuitBreakerEventConsumer and created a generic CircularEventConsumer

• Added a StopWatch which is used to measure the elapsed time of decorated calls. CircuitBreakerEvents also contain the elapsed duration of a call now.

• Issue #33: Added the ability to 'force' state transitions manually

• Issue #38: A CircuitBreaker records not permitted calls when the state is OPEN and emits a event for each attempt. The metric "numberOfNotPermittedCalls" can be access via CircuitBreaker.Metrics

• Issue #39: A CircuitBreaker should copy the previous RingBitSet values during state transition from HALF_OPEN to CLOSED

• Updated javaslang from 2.0.4 to 2.0.5

• Updated rxjava from 2.0.1 to 2.0.3

Version 0.8.1

Version 0.8.2

• PR #59: Project has been renamed to resilience4j and has been modularized.

• PR #59: Renamed packages from io.github.robwin to io.github.resilience4j.

• PR #76: Module for integration with Retrofit.

• PR #82: Module for integration with Ratpack.

• PR #80: Resilience4j metrics reporting with Dropwizard metrics.

• PR #81: Resilience4j metrics reporting with Prometheus.

• PR #103, #104, #101: Various improvements of rxJava integration.

• PR #119: Zero allocation rate for CircuitBreaker when it has no event subscribers.

• Issue #70: Module with Spring Boot starter.

• Issue #61: Permissions aren’t available from the first cycle in AtomicRateLimiter.

• Performance improvements of ConcurrentEvictingQueue

• PR #119 - changed API of CircuitBreaker interface.

• The groupId has been changed from io.github.robwin to io.github.resilience4j

Detailed PR list

• Issue #123: Autobuild Ratpack CircuitBreaker, Retry, RateLimiter registry from properties.

• Issue #126: Created Ratpack CircuitBreaker, RateLimiter sse event streams.

• Issue #139: Support CircuitBreaker failure rate threshold < 1.

• Issue #51: Removed RxJava2 dependency to make Resilience4j more lightweight. Added a RxJava2 module.

• Issue #148: Created an EventPublisher which replaces the RxJava Event Stream.

Version 0.10.1

• RP #164: Additional gauges to monitor the circuit breaker state

• PR #165: Allow explicit ordering for CircuitBreaker and RateLimiter aspects in SpringBoot starter

• PR #166: Bulkhead metrics for Dropwizard metrics module

• PR #176: Retrofit enqueue support for circuit breaker and rate limiter

• PR #177: Dynamic rate limiter configuration

• PR #181: RxJava bulkhead operator for Maybe and Completable

• PR #169: Bulkhead integration with Ratpack and call finished metric for bulkhead

• PR #184: Dynamic bulkhead configuration

• Issue #182: Fix for circuit breaker show only first state values in Dropwizard metrics

• PR #188: Added reset method to Circuit Breaker

• PR #194: Added disable and force_open states to Circuit Breaker

• PR #205: Added Reactor support for circuit breaker, bulkhead and rate limiter.

• PR #206: Added support for Micrometer

• PR #208: Updated Retrofit version from 2.1 to 2.3

• PR #211: Make sure the Reactor operators can be used together on a Flux

• Updated Vavr from 0.9.1 to 0.9.2

• Updated RxJava from 2.1.3 to 2.1.10

• Updated Vertx from 3.4.1 to 3.5.1

• Updated Dropwizard Metrics from 3.1.2 to 3.2.5

• Updated Spring Boot from 1.4.3.RELEASE to 1.5.5.RELEASE

• Updated Ratpack from 1.4.6 to 1.5.4

• Updated Prometheus from 0.0.21 to 0.3.0

• Issue #47: OSGI Support. Fixed bnd configuration in publishing.gradle

Version 0.12.1

• PR #216: Added Circuit Breaker option to auto transition to half open

• PR #217: Added ignoreExceptions() and recordExceptions() to CircuitBreakerConfig.Builder

• PR #226: Ratpack does no longer depend on Dropwizard or Prometheus

• PR #227: Ratpack module uses Spring Reactor now

• PR #229: Publish retry event for every retry

• PR #231: Added validation to Spring Boot CircuitBreakerProperties

• PR #234: Non-blocking API for RateLimiter

• PR #236: Added Spring 4, Spring Boot 1 and Spring Boot 2 modules

Version 0.13.1

Version 0.13.2

• Issue #196: Added a new resilience4j-feign module

• Issue #241: Added support to configure automaticTransitionFromOpenToHalfOpenEnabled in Spring Boot

• Issue #248: Support The Use Of @CircuitBreaker on methods that return a mono Or flux

• Issue #286: Spring Boot emitted warnings about invalid actuator endpoint name

• Issue #307: Bulkhead Support in Prometheus

• Issue #331: Fixed Retry.decorateCallable which catched RuntimeException instead of Exception

• Issue #332: Bulkhead reactor operator did not release semaphore on cancel

• Issue #338: Fixed that SpringBoot2 auto-configuration fails when not specifying all properties

• Issue #344: Exposed bulkhead max allowed concurrent calls metric

• Issue #348: Added Spring Boot 2 support for resilience4j-retry

• Issue #351: Fixed that CircuitBreaker AutoTransitioner prevents JVM shutdown

• Issue #359: Support for retryOnResult method and Completable, Maybe types missing

• Issue #383: Added Retry support to Spring Reactor

• Updated Vavr from 0.9.2 to 0.10.0

• Updated Spring 4 from 4.3.15.RELEASE to 4.3.22.RELEASE

• Updated Spring Boot from 1.5.5.RELEASE to 1.5.19.RELEASE

• Updated Spring Boot 2 from 2.0.2.RELEASE to 2.1.3.RELEASE

• Updated Dropwizard Metrics from 3.2.5 to 3.2.6

• Updated Ratpack from 1.5.4 to 1.6.0

• Updated Micrometer from 1.0.5 to 1.1.3

• Updated Prometheus Simple Client from 0.3.0 to 0.6.0

• Updated Feign from 10.0.1 to 10.2.0

• Updated Retrofit from 2.3.0 to 2.5.0

• Updated Spring Reactor from 3.0.7.RELEASE to 3.2.6.RELEASE

• Issue #309: Added fallbackMethod support to annotations for Spring and Ratpack

• Issue #268: Added a functionality to add configurations to registries and reuse them.

• Issue #398: Added an event publisher to all registries which allows to execute code when entries are created, deleted or replaced.

• Issue #273: Added a remove method to all registries

• Issue #282: Added a replace method to all registries

• Issue #291: Added support to overwrite all resilience4j beans in Spring Boot.

• Issue #417: Allow to fully close a bulkhead

• Issue #311, #336, #357, #361: Refactored resilience4j-reactor and resilience4j-rxJava2 so that they try to acquire a permission before the subscriptions happens.

• Issue #343: CircuitBreaker only allows a configurable number of concurrent calls when in half-open state and rejects all further calls.

• Issue #325: Added instance methods to decorate functions with a CircuitBreaker

• Issue #431: Don’t prevent using other call adapters in CircuitBreakerCallAdapter

• Issue #458: Fixed a bug where the reactor context was not available when using circuit breaker

• Issue #469: Fixed a bug that registerHealthIndicator defined in a default config is not inherited

• Issue #480: Fixed a bug in the decoration of a CompletionStage, if it’s a Runnable which is executed async

• Issue #486: Added bulkhead configs to resilience4j-ratpack

• Issue #489: Set the proper order of spring aspects to make thread pool spring aspect work properly

• PR #478: Added a find() method to all registries

• Removed all deprecated methods in preparation for v1.0.0

• Issue #500: Fixed bug where default external configs in Ratpack apps are not honored

• Issue #506: Fixed bug where resilience4j-ratpack fails to run when Dropwizard metrics in not on classpath

• Issue #515: Added Aspect ordering feature in resilience4j-spring again

• Issue #518: Added support for Vavr Try and Either return types

• Issue #538: Removed minimum waitDuration constraint for retry

• Issue #544: Fixed bug where CircuitBreaker gets stuck in HALF_OPEN when the last test request throws an ignored exception

• Issue #530: Improved RxJava2OnClasspathCondition and ReactorOnClasspathCondition

• Issue #607: Spring Boot HealthIndicators are by default disabled now

• Issue #546: Added support for Spring Cloud Config

• Issue #581: Enhancement in resilience4j-reactor and resilience4j-rxjava2 to better support the zip operator.

• Issue #559: Added support for @FeignClient annotation

• Issue #560: Fixed bug when using a lambda fallback in Feign

• Issue #547: Replaced the CircuitBreaker ring buffer implementation by a count-based and time-based sliding window implementation

• Issue #562: Fixed bug: Illegal state transition from CLOSED to HALF_OPEN

• Issue #568: Allow to configure exceptions which should be treated as a success in the CircuitBreaker.

• Issue #381: Allow to configure a slow response time threshold. If too many slow calls are recorded the CircuitBreaker opens.

• Issue #488: Micrometer support for ThreadPoolBulkhead

• Issue #540: Fixed a bug where IDE did not recognize the auto config properties

• Issue #235: Added a TimeLimiter operator to resilience4j-reactor and resilience4j-rxjava2

• Issue #625: Fixed reliability and security issues raised by sonar

• Issue #626: Handle thread interruption consistently in Bulkhead and RateLimiter blocking methods

• Issue #634: Adapted resilience4j-metrics to latest changes in the CircuitBreaker

• Issue #646: Fixed CircuitBreaker 'XX' tried an illegal state transition from OPEN to OPEN

• Issue #607: Added a new config parameter to enable the CircuitBreaker and RateLimiter health indicator. They are disabled by default now.

• Issue #642: Added weight support in RateLimiter

• Issue #659: Added support for Kotlin Flows

• Issue #668: Added util class to determine whether Circuit Breaker permits calls

• Issue #671: Allow configurable wait times for circuit breakers to be open as a function of # of close attempts

• Issue #674: CircuitBreaker tried an illegal state transition from HALF_OPEN to HALF_OPEN

• Issue #682: Retrofit call cancellations are recorded as circuit breaker failures

• Issue #687: context.onSuccess called in case of maximum amount of retries reached

• Issue #691: Exceptions thrown from fallback methods shouldn’t be wrapped

• Issue #699: Added CircuitBreaker waitIntervalFunction to spring boot config

• Issue #701: Allow custom Prometheus Histogram buckets

• Issue #756: Spring Boot module must work without a Spring actuator

• PR #722: Health indicator overall status can be controlled with allowHealthIndicatorToFail property

• Issue #822: Fixed the case where resilience4j rateLimiter seems to ignore configuration

• Issue #816: Fixed Reactor RetryOperator throws exception wrapped by RetryExceptionWrapper

• Issue #806: Switched aggregated retry.calls metric to a counter from a gauage

• Issue #803: Added new Circuit breaker state → METRICS_ONLY

• Issue #799: Fixed WritableStackTraceEnabled config setting in ThreadPool bulkhead configuration

• Issue #775: Added Getter for RetryOnRetryEvent

• Issue #769: Fixed Duplicated auto complete support in IDEA

• Issue #765: Added support to use Retry with Feign client

• Issue #751: Vavr upgrade to 0.10.2

• Issue #718: Fixed blocking behavior in Reactor Retry Operator

• Issue #711: Added support to use SpEL in resilienec4j spring annoations

• Issue #751: Fixed Resilience4j Spring boot modules MetricsAutoConfiguration

• Issue #565: Added ThreadLocal passing support to the Threadpool bulkhead implementation

• Issue #430: Added TimeLimiter spring boot starter support

• Issue #509: Added support to extend Micrometer tags

• PR #831: non backward compatible API change in ThreadPoolBulkhead decorateRunnable(ThreadPoolBulkhead bulkhead, Runnable runnable) now return Supplier<CompletionStage<Void>> instead of Runnable

Version 1.3.1

• Issue #703: Add a feature that allows to plug-in your own Registry implementation which can be based on a cache library if needed.

• Issue #737: Updated reactor version to 3.3.0.RELEASE

• Issue #933: Add RegistryStore and builder methods to create BulkheadRegistry and ThreadPoolBulkheadRegistry

• Issue #924: Add RegistryStore and builder methods to create RetryRegistry

• Issue #910: Add RegistryStore and builder methods to create RateLimiterRegistry

• Issue #928: Fix TimeLimiter does not set a message for TimeoutException

• Issue #916: Allow setting Retry Wait Duration Limit to value equal >= zero

• Issue #887: Fixing Spring Boot Common and Spring Boot 2 modules share the same packages which is not allowed in the Java Module system

• Issue #886: Add support for RxJava 3

• Issue #913: Add proper graceful cleanup of resilience4j thread pool executors which make it properly cleaned on spring boot applications

• Issue #939: Fix actuator shows Whitelabel error page with "Invalid Event"

• Issue #958: Added missing method to set contextProgagators in ThreadPoolBulkheadConfigurationProperties

• PR #914: Adding non-coroutine kotlin wrapper functions as a convenience

• PR #943: Removed deprecated documentation

• 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()

Enhancements

Bugs

Version 1.6.1

Enhancements

Bugs

Version 1.7.1

Enhancements

Version 2.0.1

Version 2.0.1

Version 2.1.0

Version 2.2.0

Version 2.3.0