# Edge database

**Source:** https://promtable.com/glossary/edge-database

> An edge database is a database that runs replicas at the network edge (POPs near users) for low-latency reads — Turso (libSQL / SQLite), Cloudflare D1, Supabase Edge replicas, FaunaDB are 2026 examples.

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An edge database is a database that runs replicas at the network edge (POPs near users) for low-latency reads — Turso (libSQL / SQLite), Cloudflare D1, Supabase Edge replicas, FaunaDB are 2026 examples.

Edge databases serve queries from POPs near the user instead of one central region, cutting read latency from 100-300ms to under 50ms globally. Architecture options: SQLite replication (Turso libSQL, Cloudflare D1 with the same engine), CRDT-based sync (FaunaDB), per-region read replicas of central Postgres (Supabase). Writes still typically go to a single primary (consistency), reads spread across edges (latency). Best fit: read-heavy apps, global SaaS, content sites with personalization. Worst fit: write-heavy transactional workloads where the primary becomes a bottleneck. By 2026 edge databases are mainstream for consumer SaaS where read latency directly affects engagement.

## When to use

- Global read-heavy SaaS.
- Apps with users across continents.

## Common mistakes

- Picking edge DB for write-heavy workloads — primary bottleneck cancels the latency benefit.

## Related terms

- [serverless-database](https://promtable.com/glossary/serverless-database)
- [compute-storage-separation](https://promtable.com/glossary/compute-storage-separation)

*Last updated: 2026-06-01*
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Original page: https://promtable.com/glossary/edge-database
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