bioquro

AWS Cost Optimization for Kubernetes in 2026: How We Cut Our Cloud Bill by 60% AWS Cost Optimization Kubernetes 2026 May 22, 2026  · 15 min read AWS Cost Optimization for Kubernetes in 2026: How We Cut Our Cloud Bill by 60% (The Real Numbers) 👤 Tahar Maqawil — Senior Application Developer & Cloud Architect Informaticien d'Application · FinOps Engineer · Bioquro 10+ years deploying Kubernetes on AWS — and paying the bills that came with it There is a particular kind of Slack message that ruins a Monday. It starts with your CFO, it includes a screenshot of the AWS billing dashboard, and the number in the screenshot is not the number anyone expected. The message we received said: "Can someone explain why our cloud bill increased by $12,000 this month?" It was not a DDoS attack. It was not a misconfigured autoscaler. It was a combination of three cost leaks that had been silently draini...

i PostgreSQL Performance Tuning in 2026: The 5 Queries That Killed Our Database PostgreSQL Performance 2026 Guide May 18, 2026  · 15 min read PostgreSQL Performance Tuning in 2026: The 5 Queries That Killed Our Database 👤 Tahar Maqawil — Senior Application Developer & Database Architect Informaticien d'Application · Performance Engineer · Bioquro 10+ years optimizing PostgreSQL — from single-instance deployments to multi-terabyte clusters There is a particular sound a database makes when it is dying. It is not a sound in the server room — it is the sound of your phone vibrating at 2:47am with a PagerDuty alert. The dashboard is red. The application is timing out. And somewhere deep in the PostgreSQL logs, a query is running that should take 50 milliseconds and is currently taking 47 seconds. I have debugged this scenario more times than I want to admit. And in almost every case, the ...

OAuth 2.1 vs OAuth 2.0 in 2026: The Migration Guide That Prevents a Security Audit Failure OAuth 2.1 Security Migration Guide May 16, 2026  · 14 min read OAuth 2.1 vs OAuth 2.0 in 2026: The Migration Guide That Prevents a Security Audit Failure 👤 Tahar Maqawil — Senior Application Developer & Systems Architect Informaticien d'Application · Security Engineer · Bioquro 10+ years implementing, auditing, and migrating OAuth in production systems I still remember the subject line: "Urgent — Security Audit Finding: OAuth implicit grant." It arrived on a Thursday afternoon. The auditor had flagged our authentication service for supporting the implicit grant, which OAuth 2.1 formally deprecates. We had 14 days to respond with a remediation plan, or the finding would escalate to a compliance violation. The implicit grant had been in our codebase for six years. Nobody had touched it. It still...