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Postgres vs. MySQL / SQLite
Postgres vs MySQL vs SQLite · the 2026 SaaS default
In 2026 Postgres is the default SaaS DB unless you have a specific reason to pick otherwise. Here's when each makes sense.
PICK A TOPIC
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Postgres
Pick this when…
- · Multi-tenant SaaS needing RLS
- · JSON-heavy domain models (JSONB + GIN index)
- · Full-text search + vector + geo on one DB
- · Write-heavy but complex query workloads
MySQL / SQLite
Pick that when…
- · Legacy stack already on MySQL (don't migrate for no reason)
- · Extremely simple CRUD with high writes (MySQL)
- · Edge-first app with single-tenant + embedded DB (SQLite / Turso)
- · Local-first app with per-user DB (SQLite)
FACTORS TO WEIGH
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| Factors to weigh | Postgres | MySQL / SQLite |
|---|---|---|
| Multi-tenant RLS | Native, battle-tested | Workarounds / N/A |
| JSON / JSONB | First-class GIN index | MySQL ok, SQLite limited |
| Vector search | pgvector mature | External DB needed |
| Geo (PostGIS) | Gold standard | Weak / none |
| Replication | Logical + physical | Both ok on MySQL, SQLite via Turso |
| Write throughput (simple) | Excellent | MySQL slightly faster for naive bulk writes |
| We recommend | Default for new SaaS | SQLite/Turso for edge + single-tenant |
LET'S GET STARTED.
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