Systems & architecture

#backend

2 posts tagged #backend on DiCodeWeb, from fundamentals to production, newest first.

2 postsUpdated Aug 19, 2026

Aug 19, 2026

Reliable background jobs in NestJS with BullMQ: retries, idempotency and the transactional outbox

How to build background jobs in NestJS 12 with BullMQ 6 that never silently lose work and never charge a customer twice: at-least-once delivery and idempotency, the transactional outbox, retries with error classification, dead letters, rate limiting, graceful shutdown and observability.

Systems & architecture25 min

Aug 3, 2026

NestJS in production: the request lifecycle, dependency injection and module boundaries that scale

What NestJS does under the hood — the order of middleware, guards, interceptors, pipes and filters; DI, scopes and durable providers; dynamic modules — and how to use it to structure a large API as a clean modular monolith with a consistent error model, request context and graceful shutdown.

Systems & architecture22 min

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Reliable background jobs in NestJS with BullMQ: retries, idempotency and the transactional outbox

NestJS in production: the request lifecycle, dependency injection and module boundaries that scale

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