Testing CAST AI on GKE: A Hands-On Kubernetes Workload Optimization Lab
Kubernetes makes it easy to define CPU and memory requests for our applications. But there is a problem: How do we know whether those resource request…
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The Day the Warehouse Burned: Lessons in Cross-Border System Resilience
A fire in a fulfillment center on the far side of the world. It didn't make headlines. But for a cross-border e-commerce operation， it was a quiet cat…
TLS and mTLS for Infra Services: A Production Deep Dive for Solo Devs and Small Startups
Why this exists This started as a cost problem, not a security paper. I was running a small production setup across two servers: a dedicated 1cpu/1GB …
Azure SQL Managed Instance vs Azure SQL Database: How I Actually Made the Call
A field decision from a real production migration — not a feature-matrix blog. When we migrated two internal enterprise applications (plus an integrat…
SAP BTP Fundamentals: SAP BTP Governance
Introduction As organizations increasingly adopt cloud technologies to modernize business processes and accelerate digital transformation, governance …
Linux cgroups: Limiting Process Resources Without the Pain
Linux cgroups: Limiting Process Resources Without the Pain Let me share something I ran into last week that might save you a headache. Had a script th…
The Core Technical Problems Behind Trading and DAO Infrastructure
Decentralized trading and DAO-based organizations are often described through big ideas: open finance, community ownership, transparent governance, an…
Five Gemma-4 models, one accelerator: what porting E2B 31B to AWS Inferentia2 taught me
I ported the whole Gemma-4 family — E2B, E4B, 12B, 31B, and the 26B-A4B MoE — to run on AWS Inferentia2. Each has its own write-up in this series; thi…
QUIC-Based NAT Traversal: How PUNCH_ME_NOW Frames Are Standardizing Hole Punching
TL;DR: NAT traversal has historically relied on STUN/TURN/ICE running as an external signalling layer bolted onto whatever transport protocol you choo…
The Evaluation Debt You Don't Know You Have: Why Agent Evals Fail in Production
The Evaluation Debt You Don't Know You Have: Why Agent Evals Fail in Production By Paul Twist, Berlin | July 13, 2026 The Problem Nobody Talks About Y…
DNS Propagation Time: How Long Until Your DNS Change Goes Live?
You change the A record for api.example.com from 203.0.113.10 to 203.0.113.20`. Your browser shows the new IP. The deployment dashboard says green. Th…
Moving 20,000+ customers to a new Stripe account without anyone noticing
None of our 20,000+ US customers know this happened: last month, we moved them, their payment methods, subscriptions, credits, coupons, and promotion …
The "Ghost Client" Problem: How to Manage Orphaned Domains and Abandoned Hosting
Article image The "Ghost Client" Problem: How to Manage Orphaned Domains and Abandoned Hosting Every web design agency, freelancer, and managed servic…
Applying SAST to Infrastructure as Code (Without TFSec)
Static analysis isn't just for application source code. Terraform, Pulumi, OpenTofu, and CloudFormation files are code too — and they get misconfigure…
AI Governance Without Compute: Why Policy Fails When Infrastructure Isn’t Part of the Conversation
Introduction AI governance is often framed around risk, ethics, safety, and international cooperation. These are essential, but they are not sufficien…
Demystifying SSH Key Pairs: The Silent Guardians of Modern Infrastructure
Every DevOps engineer has typed this command countless times: ssh ubuntu@my-server A few seconds later, you're inside a Linux machine located hundreds…
Fixing the 550 SPF Check Failed Error: A Technical Step-by-Step Troubleshooting Guide
Understanding the 550 SPF Check Failed Error The "550 SPF Check Failed" error indicates that a receiving mail server rejected an incoming email. This …
Configuring DMARC p=quarantine: A Technical Step-by-Step Guide to Secure Your Domain and Improve Deliverability
Introduction to DMARC and the p=quarantine Policy DMARC (Domain-based Message Authentication, Reporting, and Conformance), defined in RFC 7489 , is an…
Solving the GPU Pinning Saga and Gemma's Meta-Commentary
What we shipped on 2026-07-03 We spent today fighting a ghost in our GPU orchestration, starting with fix(llm): stop setting litellm.api_base global (…
The Real Cost to an Agency When a Client's Domain Silently Expires
Article image The Real Cost to an Agency When a Client's Domain Silently Expires Every digital agency owner has a nightmare scenario. It's usually not…
Serving cheap when two models agree: a measured cost lever
The problem A cost efficient AI system sends easy work to a cheap model and only escalates hard work to an expensive frontier model. The trouble is kn…
Why I still use NGINX over everything else
People keep recommending Caddy. The config is cleaner, automatic HTTPS, three lines and you're done. They're not wrong. For a side project or a small …
The Brain/Sandbox Pattern: Why Your Production Agent Needs This Architecture
When you run an agent from a prototype to production, something changes. Not the model. Not the framework. The infrastructure requirements split apart…
We Had 6 Features. 2 Were Eating Our Budget
Twelve months ago we were burning $4,200/month on AI infrastructure and could not tell you which feature was responsible for a single dollar of it. Th…
How I killed my fragile Instagram scraper and collapsed data collection into one API call
I'm building Mimestra — it finds viral short-form videos, breaks down why they went viral, and turns that into a shoot-ready brief. This post is about…
AI Costs Are Cloud Costs Now: Why FinOps Is the New Playbook for AI Spend
Something quietly changed inside finance dashboards over the last eighteen months. The line item for AI tools used to be small and predictable. Now it…
How I Set Up HAProxy + ProxySQL on a Single OVH VPS for My Solo SaaS
TL;DR: I needed to expose MySQL on the internet without getting scanned into oblivion within 48 hours. I stacked HAProxy in front of ProxySQL in front…
EBS gp2 burst credits ran dry and our builds slowed to a crawl
TL;DR: A chunk of our EC2 build agents got slow at the same time every afternoon. No CPU pressure, no memory pressure, no network weirdness. It was EB…
Cloudflare under the hood: how it works and how attackers try to get around it
1. What Cloudflare actually is Cloudflare is not a reverse proxy running on one server somewhere. It is a globally distributed edge network with over …
ComfyUI Deploy: Choosing Between Self-Host, Serverless, and Managed (2026)
Most teams who want to deploy ComfyUI pick a platform first and figure out the consequences later. It's the wrong order. Each deployment path (self-ho…