Skip to content

Data flow by store

The data-flow diagram inverts the system map: instead of showing services as the focus, it shows persistent stores as the focus, with every service that writes to or reads from each one.

Useful for questions like:

  • “Which services write to Postgres?” — count the inbound arrows in the Postgres subgraph.
  • “If Stripe is down, which services degrade?” — see the Stripe subgraph.
  • “Where do we still read from Kubernetes CRDs?” — see the K8s subgraph.

      
        mmdc render failed: Command failed: npx --no-install mmdc -i "/home/runner/_work/opstech-site/opstech-site/docs-site/.mermaid-cache/db7fedb5e3301e6b.mmd" -o "/home/runner/_work/opstech-site/opstech-site/docs-site/.mermaid-cache/db7fedb5e3301e6b.svg" -b transparent 2>&1
      
    
Each subgraph = one persistent store. Inbound arrows are services that mutate or call it.