Deferred¶

For tracking what we haven't picked yet and why. Each row names a category, the candidate set, and the trigger that would force a decision.

Infrastructure¶

Pick	Candidates	Trigger
Streaming bus	NATS JetStream vs in-process	First cross-BC saga
Cache	Redis vs in-process	First read pattern that needs it
Search index	Meilisearch vs Postgres FTS	First user-facing search query
File / blob storage	filesystem vs S3-compatible (MinIO, R2, S3)	First non-local Dataset volume
Container orchestration	Helm, Argo CD	First non-local deployment
Snapshot store	In-events vs sidecar table	Fold-on-read becomes a measurable bottleneck
Outbox	Table-based vs NOTIFY-only	First cross-process consumer needing at-least-once
Background scheduler	in-process (current) vs APScheduler vs Temporal	First job that needs to outlive a process
Backup / PITR	pgBackRest vs WAL-G vs managed	First non-local deployment
Secrets management	Vault, cloud, sealed-secrets	First non-local deployment
TLS / load balancer	nginx vs Caddy vs cloud LB	Deployment chooses its proxy

Pick	Candidates	Trigger
Authz engine	SpiceDB vs OpenFGA	First non-Cedar authz rule
LLM provider + embedding	OpenAI vs Anthropic vs local (Ollama)	Reasoning generation lands (today only stored)
Docs site generator	mkdocs, Docusaurus	If docs outgrow GitHub's renderer
Versioning / release	hatch + setuptools_scm vs custom	First external consumer of the API or library

Pick	Candidates	Trigger
Asset persistent ID profile	PIDINST profile vs raw DataCite Schema 4.6 `Instrument` resourceType vs ePIC Handle	First Asset that needs publication-quality cross-facility identity (paper citation, cross-facility share). PIDINST adoption is thin (HZB at BESSY II is the only confirmed photon-science adopter as of 2026); CORA + APS would be peer #2.
Release-hygiene bundle	CycloneDX SBOM (Syft) + Sigstore (PyPI Trusted Publishing or cosign on containers) + SLSA L1-L2 (GitHub Actions native attestations) + in-toto attestation envelope (cross-trust egress)	CORA's release / distribution surface decided (PyPI wheel? container image? source-only?)
Experiment-bundle format	RO-Crate 1.2 (Process Run Crate / Workflow Run Crate profile) vs raw HDF5 + sidecar metadata	First external publishing of an experiment bundle (Zenodo, institutional repository, MAX IV data portal)