Cluster Autoscaler vs Karpenter: How Node Scaling Really Differs
Compare Cluster Autoscaler and Karpenter by architecture, scale-down, spot handling and portability, with a decision guide and a safe migration path for EKS.
14 min read
Tag
kubernetes
gRPC Load Balancing in Kubernetes: Why Connections Stick to One Pod
Why Kubernetes Services pin gRPC's long-lived HTTP/2 connections to one pod, how to confirm it, and how to fix it with client-side or L7 proxy balancing.
12 min read
NestJS Graceful Shutdown: Draining Requests and Queues on SIGTERM
Go beyond enableShutdownHooks(): order readiness, HTTP connection draining, queue consumers and timeouts so NestJS pods exit cleanly on Kubernetes SIGTERM.
14 min read
Do I Need a Service Mesh? Istio vs Linkerd and When They Pay Off
Learn what a service mesh does, when mTLS, traffic control and observability justify it, how Istio, Linkerd and ambient mesh compare, and how to adopt safely.
15 min read
Secrets Management in Kubernetes: Vault vs SOPS vs Cloud Managers
Compare Vault, SOPS and cloud secret managers for Kubernetes by storage, delivery and rotation, and learn when to combine them with External Secrets Operator.
17 min read
Kubernetes Network Policy: Lock Down Pod-to-Pod Traffic Step by Step
Build a Kubernetes network policy allowlist: default deny ingress and egress, DNS, three-tier rules, namespace isolation, testing and safe rollout.
14 min read
Spring Boot Slow Startup: Profiling Beans and Cutting Boot Time
Measure Spring Boot slow startup with the startup actuator, bean profiling and JFR, then fix slow beans, auto-config and blocking I/O instead of global flags.
13 min read
Kubernetes Liveness vs Readiness Probes (and Startup): Getting Them Right
Learn what Kubernetes liveness, readiness and startup probes each decide, how to time them, and how to avoid misconfigurations that cause pod restart storms.
16 min read
Kubernetes Pod Disruption Budget Guide: Safe Node Drains and Upgrades
Learn how a Kubernetes pod disruption budget works with the Eviction API, why PDBs block or fail drains, and how to design safe cluster upgrades.
13 min read
Kubernetes HPA Custom Metrics: Prometheus Adapter vs KEDA
Learn how the HPA reads custom metrics, choose a metric that tracks per-pod load, and build the pipeline with Prometheus Adapter or KEDA.
18 min read
Kubernetes HPA Custom Metrics: Scaling on Real Demand Signals
Wire the Kubernetes HPA to request rate, queue depth and latency via custom and external metrics, and choose between Prometheus Adapter and KEDA.
14 min read
Kubernetes Requests and Limits: Avoiding CPU Throttling and OOMKills
Learn how Kubernetes requests and limits drive scheduling, QoS classes and runtime enforcement, and how to size CPU and memory to avoid throttling and OOMKills.
15 min read