AWS VPC Explained (2026): Subnets, NAT Gateways, Endpoints and Costs
AWS VPC explained in plain English for 2026: CIDRs and the 5 reserved IPs, public vs private subnets, NAT gateway pricing ($0.045/hour and per GB) and the new regional NAT, security groups vs NACLs, endpoints, peering vs Transit Gateway vs Cloud WAN, and the IPv4 charge.
13 minOct 31, 2026How to Set Up a New AWS Account Securely on the Free Tier (2026)
Step-by-step 2026 setup for a new AWS free tier account: choose the Free or Paid plan, lock the root user with MFA, create zero-spend budgets and alerts, pick a Region, sign in daily with an IAM user or IAM Identity Center, turn on CloudTrail, and avoid surprise bills.
12 minOct 31, 2026Amazon EKS Pricing 2026: Auto Mode and Extended Support Costs
What Amazon EKS costs in 2026: $0.10 an hour in standard support, $0.60 in extended support, what the Auto Mode fee buys, and when EKS is the right choice.
13 minOct 31, 2026ARM64 Migration in 2026: Graviton5 Costs 9% More and Still Undercuts x86
ARM in the cloud in 2026: AWS Graviton5 (M9g), Google Axion N4A and Azure Cobalt 200 compared on list price and vendor claims, what actually breaks when you migrate to arm64, and how to run mixed-arch Kubernetes clusters safely.
13 minOct 31, 2026Amazon S3 Explained (2026): Storage Classes, Real Prices and Egress
Amazon S3 in 2026 explained for engineers: every storage class with current us-east-1 prices, request and egress costs, Intelligent-Tiering break-even, Express One Zone, S3 Tables, Vectors and Files, security defaults, and how S3 compares with Cloudflare R2 and Google Cloud Storage.
13 minOct 20, 2026Serverless in 2026: Lambda vs Cloud Run vs Workers, and When It Costs More
Serverless in 2026 explained: AWS Lambda Managed Instances, durable functions, SnapStart and the new Web Functions, Cloud Run GPUs and worker pools, Azure Container Apps, Cloudflare Containers and Vercel Fluid compute, with a list-price comparison and the workloads where serverless costs more.
14 minOct 20, 2026Self-Hosting vs SaaS in 2026: 37signals Saved $2M a Year. Should You?
A balanced look at self-hosting vs SaaS and cloud repatriation in 2026: 37signals' published cloud exit numbers, Ahrefs and Dropbox, what the surveys measure, Coolify, Dokploy and Kamal, the ops cost nobody invoices, and a break-even rule.
13 minOct 20, 2026Self-Hosting LLMs vs API Costs in 2026: The 62% Utilisation Break-Even
Self-hosting an open LLM vs paying per token in October 2026: H100 prices from $1.17 to $4.29 an hour, 8,973 tokens/s per GPU for gpt-oss-120b on vLLM, a $0.20 per million API price, the utilisation each price needs to break even, and the ops costs the spreadsheet leaves out.
13 minOct 20, 2026Multi-Tenant SaaS Architecture Explained: Silo, Pool, Bridge, Cells (2026)
Multi-tenant SaaS architecture explained: the AWS SaaS Lens silo, pool and bridge models, database-per-tenant vs shared schema with row-level security, noisy neighbours, cell-based architecture, and how to work out cost per tenant, with real examples.
12 minOct 20, 2026LiteLLM Proxy Setup: Docker, Virtual Keys, Budgets (2026)
Set up LiteLLM proxy v1.106 with Docker Compose or Helm: config.yaml, fallbacks, virtual keys with budgets and rate limits, plus fixes for common errors.
13 minOct 20, 2026Kubernetes Requests and Limits Explained: 8% CPU Used, Resize GA in 1.35
Kubernetes requests and limits in 2026: how QoS classes and oom_score_adj decide who dies, why CPU limits cause CFS throttling, what cgroup v2 changed for OOM kills, in-place resize GA in 1.35, VPA InPlaceOrRecreate, and why clusters still use 8% of their CPU.
13 minOct 20, 2026How to Fix Kubernetes Pods Stuck in Pending: Causes and Commands (2026)
Pods stuck in Pending? Read the FailedScheduling event, then fix the cause: insufficient cpu or memory, untolerated taints, node affinity, unbound PVCs and volume zones, topology spread, quotas, scheduling gates, or Karpenter and Cluster Autoscaler not scaling.
12 minOct 20, 2026Kubernetes Cost Optimization in 2026: 8% CPU Use and What Fixes It
Kubernetes cost optimisation as of October 2026: Cast AI measures 8% CPU and 20% memory utilisation, Datadog puts 83% of container cost on idle, plus OpenCost vs IBM Kubecost 3.0, Karpenter 1.15 Balanced consolidation, in-place resize, spot and Graviton.
12 minOct 20, 2026Kubernetes Autoscaling: HPA vs VPA vs KEDA vs Karpenter (2026)
Kubernetes autoscaling for 2026: when to use HPA, VPA, KEDA, Cluster Autoscaler or Karpenter, what changed in 1.37, and the mistakes that cost money.
13 minOct 20, 2026Continuous Profiling in 2026: OTel Profiles Alpha, eBPF Agents, Real Costs
Continuous profiling in 2026 explained: OpenTelemetry Profiles reached public alpha in March, the Elastic-donated eBPF profiler now ships as a Collector, Pyroscope 2.0 and Parca compared, the real overhead numbers, and how profiles turn into cloud savings.
13 min