Articles about cloud infrastructure, containers, IaC, and platform engineering
Compared downtime during Blue/Green Switchover across Plain JDBC, HikariCP with retry, and AWS JDBC Driver BG plugin. The plugin recorded 0 failures in 400 queries during testing. HikariCP kept connecting to the old writer — a critical pitfall.
Measured real downtime during Aurora PostgreSQL failover vs Blue/Green Switchover. Failover had 12 connection failures in two separate windows, Blue/Green Switchover ~26s with 6 failures. DNS TTL of 60s is the key bottleneck.
Validating BuildKit as a Kaniko replacement on EKS. Rootless mode fails on Auto Mode nodes, but privileged mode delivers 25-52% faster builds with a 3-stage initContainers pattern.
Upgrading EKS following AWS best practices end-to-end: Cluster Insights, deprecated API scanning, PDB-backed availability guarantees, and post-upgrade validation.
Deploy the Neuron DRA driver on EKS and verify attribute-based device allocation via ResourceClaimTemplates. Discovered that dynamic LNC configuration is unsupported on trn1.2xlarge.
Create an ArgoCD Capability using eksctl's declarative YAML config and deploy a sample app. Covers the differences from AWS CLI and CloudFormation behavior.
Enable ArgoCD Capability on EKS via AWS CLI and deploy a sample app end-to-end. Covers real gotchas like Identity Center region mismatch and access policy setup.
Verified ClusterNetworkPolicy and ApplicationNetworkPolicy on EKS Auto Mode. Domain name-based egress filtering enables multi-layered access control that restricts pods to specific external services only.
Implement same-AZ routing using Powertools getMetadata() in TypeScript. Verified caching behavior and clearMetadataCache() with real measurement data.
Hands-on verification of Lambda's new AZ metadata endpoint. Measured same-AZ vs cross-AZ latency to an ElastiCache Valkey cluster and quantified the routing benefit.