Prosyon · Research
Technical papers, structured definitions, and design rationale for the systems that matter. Each document captures one decision or pattern thoroughly — the problem, the model, the approach, and the implementation.
research.prosyon.ca is served as a static site from S3 behind CloudFront, with no always-on compute and no per-request cost floor. This paper documents the delivery model end to end: how the bucket and distribution are provisioned, how the CI pipeline resolves the correct deployment target at publish time, and why the build was reduced to a single dependency-free Hugo invocation.
This paper works through a single-table DynamoDB design from access patterns to keys, GSIs, and the cost model that makes it attractive for a zero-cost-when-idle stack. It is a draft: the entity set is stable but the overloaded index strategy is still being validated against real query volume.
When the DNS zone lives with an external provider, Terraform cannot create the ACM validation records itself, and a naive single apply deadlocks: CloudFront wants a validated certificate that cannot validate until records exist that the apply is waiting to finish before emitting. This paper documents the two-phase apply that breaks the cycle, and why the distribution is gated behind a flag.
Six subject areas that organise all content in the library.
Cloud delivery, networking, and zero-idle infrastructure design.
Database design, storage systems, and data modeling patterns.
System boundaries, service decomposition, and design trade-offs.
Access control, certificate management, and secure system design.
Platform engineering, tooling, and developer experience.
Deployment pipelines, monitoring, and operational practices.
Three kinds of content, each serving a distinct role in the knowledge base.