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Add resilience4j-circuit-breaker: Resilience4j 2.4.0 vs Spring Framework 7 core, on Boot 4.1

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Companion module for the rewritten post 'Resilience4j Circuit Breaker in Spring Boot 4.1:
What It's Still For', reworked around Framework 7 now shipping @Retryable/@ConcurrencyLimit
in core. Covers what's still Resilience4j's job (circuit breaker, rate limiter, bulkhead's
bounded wait, fallback methods, Actuator/Micrometer metrics), the off-by-one between
maxAttempts and maxRetries, and two Boot-4.1 build breaks: spring-boot-starter-aop no longer
exists (renamed to spring-boot-starter-aspectj, proven with Maven Central metadata and the
renamed starter's own POM -- see resilience/docs/08-starter-aop-renamed-to-starter-aspectj.md
in this same repo), and the resulting fix uses that renamed starter directly rather than
assembling spring-aop + aspectjweaver by hand. Kept as its own module rather than a new
top-level repository, alongside the existing resilience/ module for the sibling Framework-7
post.
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asmhatre
2026-09-18 08:40:50 +00:00
parent 604291067e
commit 320733265f
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resilience4j-circuit-breaker/docs/output/04c-r4j-bulkhead-comparison.txt
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Resilience4j @Bulkhead(maxConcurrentCalls=2, maxWaitDuration=100ms), same 4-caller/300ms shape
==============================================================================================
REJECTED:c0 in 112ms
done:c1 in 307ms
done:c2 in 303ms
REJECTED:c3 in 101ms
REJECTED count: 2 -- these callers waited up to maxWaitDuration=100ms for a slot,
then gave up and ran the fallback method, instead of blocking indefinitely like @ConcurrencyLimit's BLOCK policy.