59 lines
1.4 KiB
Markdown
59 lines
1.4 KiB
Markdown
# 8. Architectural diagrams
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SVG files in [`diagrams/`](diagrams/). The same shapes are repeated below in mermaid for Forgejo preview.
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## 8.1 End-to-end (HTTPS vs NATS)
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```mermaid
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flowchart LR
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Z[Zapier cloud apps] -->|HTTPS x-api-key| E[zappier-edge]
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E -->|HTTPS| M[verae-middleware]
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M -->|HTTPS| C[Verae chain]
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M -->|JetStream| N[NATS 3-node cluster]
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N --> P[job-poller]
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N --> W[webhook-deliver]
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N --> A[archive-aggregator]
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N --> R[WORM x N]
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N --> T[tree-node x N]
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P -->|HTTPS status| C
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W -->|HTTPS REST Hook| Z
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```
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## 8.2 NATS.IO 3-server cluster
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```mermaid
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flowchart TB
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subgraph cluster [Verae NATS.IO JetStream]
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N1[nats-server A :4222 loopback]
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N2[nats-server B]
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N3[nats-server C]
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N1 <--> N2
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N2 <--> N3
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N3 <--> N1
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end
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MW[middleware + workers] -->|cluster URL list| cluster
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F[fleet SSH hosts] -->|workers only| cluster
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```
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## 8.3 Uptime and failure
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```mermaid
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flowchart TD
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H[health /health] -->|fail| R[restart instance]
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P[pause] -->|not available| F[keepFloor spawn]
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S[SSH host down] -->|spawn failed| O[place on next machine]
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Q[archive.query broadcast] -->|bloom miss| SIL[silence]
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Q -->|hit| REP[archive.reply.id]
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```
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## 8.4 New address = new process
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See [09-expansion-template.md](09-expansion-template.md).
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