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Notifications were fire-and-forget: if Slack, Mattermost, or ntfy was temporarily down, changes were silently lost. This adds automatic retry with exponential backoff and jitter to all notification endpoints. Implementation: - New retry.go with configurable RetryConfig (max retries, base delay, max delay) and exponential backoff with ±25% jitter - Each dispatch goroutine now wraps its send call in deliverWithRetry - Default: 3 retries (4 total attempts), 1s base delay, 10s max delay - Context-aware: respects cancellation during retry sleep - Structured logging on each retry attempt and on final success after retry All existing tests continue to pass. New tests cover: - Backoff calculation (increase, cap) - Retry success on first attempt (no unnecessary retries) - Retry on transient failure (succeeds after N attempts) - Exhausted retries (returns last error) - Context cancellation during retry sleep - Integration: SendNotification retries transient 500s - Integration: all three endpoints retry independently - Integration: permanent failure exhausts retries closes #62
3.1 KiB
3.1 KiB