Case studies, frameworks, essays.
Fast-or-Verify: Trustworthy NL-to-SQL with Human-in-the-Loop
Most NL-to-SQL demos are impressive — until you need real guarantees. A two-lane architecture that reuses human-approved SQL instantly and routes novel questions to review.
Securing Backend APIs with GCP API Gateway and Auth0
Protecting backend APIs behind GCP API Gateway with Auth0-issued JWTs: OpenAPI securityDefinitions, audiences, and validating tokens at the gateway.
CORS in GCP API Gateway: Fixing Preflight OPTIONS Failures
Managed GCP API Gateway fails browser preflight requests with a 503 'No Healthy Upstream' CORS error. The OpenAPI spec change that makes OPTIONS handling work.
OCI DevOps CI/CD: Deploying OCI Functions from Commit to Cloud
End-to-end CI/CD on OCI DevOps: code repository, build and deployment pipelines, triggers, and build_spec.yaml — deploying a serverless Function on every commit.
What Is Retrieval-Augmented Generation? RAG to Reality, Part 1
Part 1 of RAG to Reality: the use-cases that demand RAG, how ingestion (chunking, embedding, vector stores) and query flow actually work, and the enhancements that make RAG reliable.
OCI Load Balancer: Free SSL with Let's Encrypt Auto-Renewal
Free Let's Encrypt certificates on an OCI Load Balancer, auto-renewed with Certbot deploy hooks and the OCI CLI — all infrastructure in Terraform.
Selective DRG Routing Through OCI Network Firewall (Terraform)
Full Terraform for an OCI hub-and-spoke where some traffic routes through a central Network Firewall and the rest goes direct — with the DRG route-table mechanics explained.
Host a Free Blog on Oracle Cloud (Ampere A1 + Free HTTPS)
Updated walkthrough for a free Ghost blog on Oracle Cloud: Always Free Ampere A1 compute, Network Load Balancer, Bastion access, and free SSL.
Creating a Free (HTTPS) Blog on Oracle Cloud
The original 2021 guide to a free HTTPS blog on Oracle Cloud with Ghost, Let's Encrypt and NoIP. A newer version of this walkthrough exists.