feat: add job queue, input validation, circuit breakers, and rate lim…#1028
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Devsol-01 merged 3 commits intoJun 27, 2026
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…iting - Devsol-01#990: Integrate BullMQ/Redis job queue with 4 queues (notifications, email, blockchain, reports), processors with exponential backoff retries, DLQ strategy, admin visibility endpoints, and 202 Accepted semantics for async report generation. - Devsol-01#987: Add custom validators (IsPositiveAmount, IsStellarSecretKey, IsTransactionHash), Trim/StripControlChars sanitization transforms, and tighten DTOs across auth, governance, and savings modules with proper constraints (amount precision, max lengths, enum validation). - Devsol-01#988: Create generic ExternalCallService wrapping all external dependencies with configurable timeouts, retries, circuit breakers, fallback support, and observability via metrics and admin endpoints. - Devsol-01#991: Add comprehensive tests for TieredThrottlerGuard tier resolution and progressive limits, and RateLimitMonitorService violation tracking. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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…tructure-hardening # Conflicts: # backend/package.json # backend/src/app.module.ts # backend/src/auth/dto/auth.dto.ts # backend/src/common/validators/is-positive-amount.validator.ts # backend/src/modules/reports/reports.controller.ts # backend/src/modules/savings/dto/create-goal.dto.ts # backend/src/modules/savings/dto/subscribe.dto.ts # backend/src/modules/savings/dto/withdraw.dto.ts # pnpm-lock.yaml
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closes [Backend] -- Add Background Job Queue for Heavy/Asynchronous Tasks #990: Integrate BullMQ/Redis job queue with 4 queues (notifications, email, blockchain, reports), processors with exponential backoff retries, DLQ strategy, admin visibility endpoints, and 202 Accepted semantics for async report generation.
closes [Backend] -- Implement Comprehensive Input Validation and Domain Constraints #987: Add custom validators (IsPositiveAmount, IsStellarSecretKey, IsTransactionHash), Trim/StripControlChars sanitization transforms, and tighten DTOs across auth, governance, and savings modules with proper constraints (amount precision, max lengths, enum validation).
closes [Backend] -- Implement Request Timeouts and Circuit Breakers Around External Calls #988: Create generic ExternalCallService wrapping all external dependencies with configurable timeouts, retries, circuit breakers, fallback support, and observability via metrics and admin endpoints.
closes [Backend] -- Implement Rate Limiting for Public Endpoints with User Tiers #991: Add comprehensive tests for TieredThrottlerGuard tier resolution and progressive limits, and RateLimitMonitorService violation tracking.