#backend

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  Backend DevelopmentAugust 3, 202621 min

  BullMQ Worker Not Processing Jobs? Fix It (2026)

  BullMQ worker not processing jobs? Work through queue name and prefix, maxRetriesPerRequest, stalled-job locks, and the v6 ioredis peer dependency change.

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  Backend DevelopmentJuly 2, 202614 min

  Postgres MERGE RETURNING: Old and New Values (2026)

  Postgres 18 lets MERGE RETURNING return old and new row values in one query. See merge_action(), the xmax alternative, and verified Node.js/TypeScript code.

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  Backend DevelopmentJuly 1, 202612 min

  Correlation IDs in Node.js with AsyncLocalStorage (2026)

  Add a correlation ID to every log line in Node.js with built-in AsyncLocalStorage and Express — typed, zero-dependency, plus pino and downstream propagation.

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  Backend DevelopmentJune 30, 202617 min

  Node.js Circuit Breakers with opossum + TypeScript (2026)

  Build a production Node.js circuit breaker in TypeScript with opossum: closed, open, half-open states, fallbacks, errorFilter, timeouts, and verified output.

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  Backend DevelopmentJune 27, 202616 min

  Postgres Row-Level Security for Multi-Tenant Apps (2026)

  Implement Postgres row-level security for multi-tenant apps with node-postgres: enable RLS, write current_setting policies, and avoid the pool-leak footgun.

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  Backend DevelopmentJune 24, 202611 min

  Drizzle ORM Relational Queries: db.query Guide (2026)

  Query nested relations in Drizzle ORM with db.query and the with operator: filter and limit child rows, run many-to-many joins, plus the v1 vs v2 changes.

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  Backend DevelopmentJune 22, 202611 min

  tRPC v11 End-to-End Type Safety: Server + Client (2026)

  Build a fully type-safe tRPC v11 API in TypeScript: a standalone server, a vanilla client, Zod validation, and error handling. No framework, all runnable.

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  Backend DevelopmentJune 17, 202610 min

  Postgres 18 UUIDv7 Primary Keys: Practical Guide (2026)

  Use Postgres 18's built-in uuidv7() for primary keys: default DDL, uuidv7 vs uuidv4 vs bigint, migrating off uuidv4, and the timestamp-leak caveat to know.

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  Backend DevelopmentJune 16, 202614 min

  Valkey with Node.js and TypeScript: 2026 Setup Guide

  Connect Valkey from Node.js and TypeScript with the iovalkey client: Docker setup, typed caching, pipelines, pub/sub, error handling, and graceful shutdown.

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  Backend DevelopmentJune 14, 202618 min

  gRPC in Node.js and TypeScript: Production Guide (2026)

  Build a typed, production gRPC service in Node.js and TypeScript: server streaming, deadlines, the error model, and health checks. Runnable 2026 guide.

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  Backend DevelopmentJune 11, 20269 min

  Postgres LISTEN/NOTIFY for Job Queues: 2026 Guide

  Should you use Postgres LISTEN/NOTIFY for a job queue? The global commit lock, 8000-byte payload cap, PgBouncer limits, and safer SKIP LOCKED patterns.

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  Backend DevelopmentJune 10, 202616 min

  Cursor Pagination in Postgres with Node.js (2026)

  Build fast cursor pagination on Postgres with Node.js and TypeScript: keyset queries, a compound (created_at, id) tiebreaker, and opaque base64url cursors.