leet code
Docker Swarm vs Kubernetes: Monitoring & Alerting Strategies
TL;DR Docker Swarm’s simplicity keeps metric volume low, but you lose fine‑grained process insight. Kubernetes produces 40‑60 % more time‑series data; plan for storage and…
// category archive
leet code
102 articles
leet code
Event‑Driven Notification Service with Go & WebSockets
TL;DR – Real‑time push beats polling by up to 80 % latency (Cloudflare, 2023). – Go’s goroutine model lets a single server juggle tens of thousands of…
leet code
Robust Health Checks for Python Microservices in Kubernetes
⚡ Opening Hook A fresh deployment of a Flask‑based order service went live at 02:13 AM. Within minutes the e‑commerce checkout stalled, customers saw “Service…
leet code
Best Multi-Region Kubernetes Secrets Management
⚡️ TL;DR – Treat secrets as short‑lived, rotating assets and never store them plaintext in git or container images. – Pick a single source‑of‑truth…
leet code
Build a CI/CD Pipeline with Tekton & ArgoCD – Kubernetes Native
TL;DR – Quick Takeaways Tekton + ArgoCD give you a fully declarative, Kubernetes‑native CI/CD stack that scales with your workloads. Separate concerns: Tekton runs the build‑test‑containerize…
leet code
Custom Operators for Managing Stateful Apps on Kubernetes
TL;DR – Quick Takeaways StatefulSets can spin up pods, but they stumble when a workload needs coordinated upgrades, backups, or external‑system integration. Operators embed…
leet code
Debugging gRPC Connection Timeouts in Microservices
TL;DR – gRPC deadline is an absolute end‑time; a timeout is a relative network limit. – Propagate deadlines through each hop; never let a…
leet code
Zero‑Downtime Database Migrations in Kubernetes
TL;DR – Quick Takeaways Treat schema changes like feature rollouts: use blue‑green or canary patterns and guard every step with feature flags. Dual‑write +…
leet code
Service Mesh vs API Gateway for Go Backends – Key Insights
TL;DR – Service Mesh shines for east‑west traffic, while an API gateway is the front door for north‑south requests. – A sidecar proxy adds…
leet code
Designing Microservices Caching with Redis Write‑Through
TL;DR – Write‑through keeps Redis and the primary DB in lockstep, eliminating most stale‑read bugs. – Double‑write adds 2‑5 ms latency per write, but you…
leet code
Optimizing Kafka for High‑Throughput Logging in Go
TL;DR – Use Sarama v1.44 async producer, not sync, for log fire‑and‑forget. – Set batch.size ≈ 1 MiB and linger.ms 5‑10 ms; this alone can lift throughput 30‑40×.…
leet code
Git Fetch vs Pull vs Rebase: When and How to Use Each
⚡️ Opening Hook Last month a senior engineer on the nileshblog.tech team pushed a hotfix, but the deployment crashed because the CI pipeline merged…
leet code
Tuning Persistent Volumes in Stateful Kubernetes
“Our production PostgreSQL pod started lagging at 5 seconds per query. The CPU stayed idle, the network was clean, but the latency exploded.” That anxiety‑inducing…
leet code
Implement Circuit Breakers in Python Microservices – Guide
TL;DR – Circuit breakers isolate flaky downstream calls, turning cascading failures into fast‑fail responses. – A bare‑bones Python class can manage CLOSED, OPEN, and…
leet code
AI in Human Life: Building Reliable Production Systems
In the fall of 2020, a medical AI system trained to spot signs of stroke on CT scans was rolled out across a European…
leet code
Effective Kubernetes StatefulSet Deployment Guide
TL;DR – StatefulSets give each pod a permanent identity and storage, perfect for databases, queues, and other stateful workloads. – Use a headless Service…
leet code
Debugging Memory Leaks in Production Python Apps
💡 TL;DR – Quick Takeaways – Memory leaks silently eat RAM, causing OOM crashes in production. – tracemalloc and the gc module give you…
leet code
How to Shrink Node.js Docker Images by Up to 60%
TL;DR – Alpine‑based images can shrink a Node.js container by ≈ 60% with no measurable latency loss. – Multi‑stage builds cut the final layer count in…