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resilience-retry

Use when adding retries, backoff, or concurrency protection to Spring Boot 3 / Spring Framework 6 services. Covers Spring Retry or Resilience4j selection, proxy behavior, and transaction limits.

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Files included (4)

  • SKILL.md1.8 KB
  • agents/openai.yaml202 B
  • examples/bad-payment-client.java154 B
  • examples/good-payment-client.java206 B

SKILL.md (original)

Review the instructions the agent will receive before you install.

Resilience and Retry (Boot 3)

Boot 3 does not have Spring Framework 7 core resilience annotations. Choose Spring Retry for simple imperative retry or Resilience4j when you also need circuit breakers, rate limiting, or bulkheads. Keep the dependency and configuration explicit.

@Configuration
@EnableRetry
class RetryConfig { }

@Service
class PaymentClient {
    @Retryable(
        retryFor = ConnectException.class,
        maxAttempts = 4,
        backoff = @Backoff(delay = 200, multiplier = 2.0, maxDelay = 2000))
    PaymentResult charge(ChargeRequest request) { ... }

    @Recover
    PaymentResult recover(ConnectException error, ChargeRequest request) { ... }
}

Spring Retry's maxAttempts includes the initial call. Resilience4j is preferable when retry must be composed with a circuit breaker or bulkhead. Both approaches are proxy-based: self invocation bypasses advice, and retrying a method inside a rollback-only transaction does not create a fresh transaction for each attempt.

Gotchas

  • Agent uses Framework 7 @EnableResilientMethods - Boot 3 needs Spring Retry or Resilience4j.
  • Agent confuses maxAttempts with retry count - Spring Retry includes the initial call.
  • Agent adds @Recover to Resilience4j - recovery must be modeled with a fallback or caller handling.
  • Agent retries a self-invoked method - call through a Spring proxy.
  • Agent retries inside a transaction expecting a fresh transaction - move retry outside the transactional bean.
  • Agent retries non-idempotent writes without an idempotency key - protect payment and command operations.

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