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Integration Testing NestJS with Testcontainers and Postgres

Software Development

August 20269 min read

Integration Testing NestJS with Testcontainers and Postgres

Why mocked repositories hide SQL and constraint bugs, and how I run NestJS integration tests against a real throwaway Postgres with Testcontainers and Jest.

August 202610 min read

Context Engineering for LLM Agents: Write, Select, Compress

Why context engineering superseded prompt engineering for production agents in 2025 — the failure modes, the write/select/compress/isolate strategies, and the measurable impact.

KEDA: Event-Driven Autoscaling & Scale-to-Zero on K8s

DevOps

August 202610 min read

KEDA: Event-Driven Autoscaling & Scale-to-Zero on K8s

How I autoscale Kubernetes with KEDA on queue depth, Kafka lag, Prometheus, and cron instead of CPU — scaling event-driven workers to zero, and the cold-start trade-off that comes with it.

Kubernetes In-Place Pod Resize: CPU & Memory No Restart

DevOps

August 20269 min read

Kubernetes In-Place Pod Resize: CPU & Memory No Restart

How Kubernetes in-place pod resize changes CPU and memory on a running pod without a restart — the resize subresource, resizePolicy, and VPA InPlaceOrRecreate, from beta in v1.33 to GA in v1.35.

kubectl debug: Fix CrashLoopBackOff & Distroless Pods

DevOps

August 20269 min read

kubectl debug: Fix CrashLoopBackOff & Distroless Pods

You can't exec into a distroless pod or one stuck in CrashLoopBackOff. Here is how I use kubectl debug, ephemeral containers, --target, and --copy-to to get a shell anyway.

Distributed Locking with Redis Redlock in Node.js

Backend

August 20269 min read

Distributed Locking with Redis Redlock in Node.js

The multi-instance mutual-exclusion problem, the Redlock quorum algorithm, node-redlock with TTL auto-extension, why fencing tokens matter, and when a Postgres advisory lock wins.

Showing 19–24 of 428 posts

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