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Architecture & data flows

Last updated: July 17, 2026

This page documents, transparently, how Zarev is built and which data goes where. Zarev is an AI-intelligence pipeline running on its author's machine, a database hosted in the European Union, and this website — a training catalogue and a newsletter. Nothing else.

Data flow

Content (digests, newsletter, knowledge base, training pages) is produced locally and published to the database. The website only reads it — public reads are limited by row-level security (RLS): only active trainings and published archives are visible.

┌──────────────────────────────────────┐
│  PIPELINE DE VEILLE (poste local)    │
│                                      │
│  YouTube · GitHub releases · RSS ·   │
│  X/Twitter · Instagram               │
│        │  collecte + tri + synthèse  │
│        ▼                             │
│  digest quotidien · knowledge base   │
└───────────────────┬──────────────────┘
                    │ HTTPS / TLS
                    ▼
┌──────────────────────────────────────┐
│  SUPABASE EU (Francfort)             │
│                                      │
│  digests · newsletters · knowledge   │
│  formations (catalogue + modules)    │
│  leads formations (IP hashée)        │
│  feedback newsletter (IP hashée)     │
└───────────────────▲──────────────────┘
                    │ RLS (lecture publique limitée)
                    │
┌───────────────────┴──────────────────┐
│  SITE zarev.dev (Vercel)             │
│                                      │
│  catalogue /formations + devis       │
│  newsletter (double opt-in, Resend)  │
│  archives publiques                  │
└──────────────────────────────────────┘

The data we collect

Three cases, and only three:

  • Newsletter signup: your email address, confirmed via double opt-in (sent through Resend). It is used solely to send you the newsletter.
  • Training quote request: name, email, company (optional) and message — forwarded to the author and stored for sales follow-up. Your IP address is never stored in clear text: only a SHA-256 fingerprint, used against spam.
  • Newsletter feedback votes (👍 / 🤔 / 👎): the vote and a SHA-256 fingerprint of the IP, nothing else.

No ad tracking, no third-party cookies, no invasive analytics, no resale.

Guarantees

  • No raw IP address is ever persisted — only SHA-256 fingerprints with a rotatable secret.
  • Database hosted in the European Union (Supabase, Frankfurt).
  • No data shared with or sold to third parties.
  • Operational right to erasure: one-click unsubscribe for the newsletter, deletion on request for leads.

Going further