SRE & RELIABILITY
8 MIN READ
Mastering Multi-Window Multi-Burn-Rate Alerting
Eliminate alert fatigue by transitioning from static threshold CPU/memory alerts to Google SRE multi-window burn rate alerts based on user-facing SLOs.
- 14.4x burn rate (2% budget in 1 hour) → Page on-call immediately
- 6x burn rate (5% budget in 6 hours) → Page on-call within 30 min
- 1x burn rate (10% budget in 3 days) → Ticket during business hours
KUBERNETES
10 MIN READ
Production Kubernetes Resilience Checklist
Essential configuration patterns to guarantee zero-downtime rolling deploys, graceful pod termination, and zone-aware scheduling.
- Configure preStop hooks (sleep 10) to drain in-flight TCP streams
- Mandatory PodDisruptionBudgets (maxUnavailable: 1)
- topologySpreadConstraints across zone and hostname
TERRAFORM & IAC
7 MIN READ
Terragrunt DRY Architecture for Multi-Account AWS
Structuring production Terraform code to prevent module duplication, enforce remote state locking, and automate cross-account IAM role assumption.
- Root terragrunt.hcl generating backend and provider blocks
- Environment inheritance (dev, stage, prod) with mock outputs
- DynamoDB state locking with KMS customer-managed keys
AI INFRASTRUCTURE
9 MIN READ
Production LLM Inference Serving Architecture
Deep dive into deploying vLLM on Kubernetes with NVIDIA GPU Operators, continuous batching, PagedAttention, and distributed vector caching.
- PagedAttention eliminating KV cache memory fragmentation
- vLLM Prometheus metrics (gpu_cache_usage_factor, time_to_first_token)
- Milvus vector indexing trade-offs (HNSW vs IVF_FLAT vs SCaNN)
ENTERPRISE SYSTEMS
6 MIN READ
VMware vSphere & Windows Server Hardening
Enterprise administration runbooks for VMware ESXi clusters, PowerCLI automation, and Windows Server Active Directory security baselines.
- PowerCLI automated snapshots and VM quiesced consistency checks
- ESXi host Lockdown Mode and NTP synchronization validation
- Kerberos ticket encryption policy and SMBv1 global deprecation
DEVSECOPS
7 MIN READ
Shift-Left Container Security & SBOM Generation
Automating vulnerability scans in GitHub Actions with Trivy, enforcing distroless rootless containers, and signing container images with Cosign.
- Multi-stage Docker builds using Google Distroless base images
- Automated CycloneDX SBOM artifact generation in CI
- Cosign keyless cryptographic image signing via GitHub OIDC