Category
Hands-on guides to building and running backend services: Node.js and Bun runtimes, NestJS, REST and MCP APIs, performance and production patterns.
Backend & APIs
I loaded the same 200,000 order documents into MongoDB 9.0 and PostgreSQL 18 JSONB and measured inserts, indexed lookups (GIN vs B-tree), containment filters, nested updates, aggregations and disk size.
Backend & APIs
I benchmarked a hand-written SKIP LOCKED queue, pg-boss 12 and BullMQ 6 on both Redis and PostgreSQL: enqueue speed, throughput, pickup latency, crash recovery, transactional enqueue and storage per job.
Backend & APIs
I scored built-in tsvector, pg_search, pg_textsearch, Elasticsearch 9.5 and Meilisearch 1.55 on three BEIR datasets: ranking quality (nDCG@10), latency, index size, typos and how fast new rows become searchable.
Backend & APIs
A regex on the hostname is not SSRF protection. I ran 16 bypass payloads against three checks on Node.js 20 and show the approach that holds up: new URL(), net.BlockList, re-checking every redirect hop and validating the DNS answer at connect time.
Backend & APIs
How to stream live job progress from NestJS with @Sse and RxJS, with the patterns from my Snagbox API: ReplaySubject per job, your own event ids, comment heartbeats, and why one stream per item stalls Chrome. Every behaviour tested on NestJS 12.1.3.
Backend & APIs
A walkthrough of the security layer in my NestJS 11 + Prisma 7 starter: Helmet headers, a CORS allow-list, three-window rate limiting, opt-in CSRF, header-free Pino logs and a Prisma error filter, with the real code and the gaps still to close.
Backend & APIs
I benchmarked Hono, Express 5, Fastify 5 and NestJS 12 across JSON, route parameters and POST bodies on Node 24, Node 26 and Bun. Hono and Fastify tie on Node at about 1.4× Express; on Bun, Hono hits 118k requests per second.
Backend & APIs
I upgraded a real NestJS 11 API to NestJS 12.1.3 with nest upgrade, fixed what broke (TypeScript 6, Jest and ESM, @Optional), and benchmarked v11 vs v12, Zod vs class-validator, Jest vs Vitest, ESLint vs oxlint, TypeScript 7 and Bun.
Backend & APIs
I ran the same Hono, Express and Postgres apps on Bun 1.4.3, Node.js 24 and Node.js 26, then measured throughput, memory, startup, TypeScript, installs, next build and native addons. Here is when Bun is worth switching to, and when Node 26 is enough.
