SQLite 3.46 WAL vs Single-Node PostgreSQL 17: Honest Engineering Tradeoffs
SQLiteEdge architectural comparison: when zero-IPC in-process SQLite WAL excels on small NVMe VPS nodes—and the exact concurrency boundary where PostgreSQL 17 wins.
SQLiteEdge Architecture & Tariff Verdict: In-Process SQLite 3.46 WAL vs Single-Node PostgreSQL 17
We recommend in-process SQLite 3.46 WAL on SQLiteEdge for single-region web apps, PocketBase backends, and database-per-tenant SaaS products with moderate write concurrency because direct library calls skip socket serialization and PgBouncer overhead. Graduate to PostgreSQL 17 (sized via PgSizer or deployed on DokployHub) whenever multiple independent worker services perform heavy concurrent multi-core writes into one shared table or require PostGIS/TimescaleDB extensions.
SQLiteEdge pricing note: public rates retrieved 2026-11-12 from official vendor pricing pages; promotional and renewal prices may change at checkout.
SQLiteEdge Public Specification & Cost Matrix (CMP-04)
| Engine Architecture Axis | SQLite 3.46+ WAL (In-Process) | PostgreSQL 17 (Client-Server) |
|---|---|---|
| Query Execution Path | In-Process C Function Call (Zero IPC) | Unix Socket or TCP Protocol Parse |
| Baseline Memory Footprint | ~16 MB – 256 MB Configurable Cache | ~350 MB – 2 GB Shared Buffers + Procs |
| Connection Pool Daemon | None (Split Read/Write File Handles) | PgBouncer / Supavisor Recommended |
| Single-Table Write Concurrency | Serialized 1 Writer Lock per File | Multi-Core MVCC Row-Level Locking |
| 5,000-Tenant Isolation Pattern | 5,000 Isolated .sqlite3 Files | Shared RLS Tables or Schema Shards |
| Typical VPS Entry Tier (2026-11-12) | Hostinger $5.99–$10.49/mo or Vultr $24/mo | 8GB–32GB Dedicated DB VPS ($24–$96+/mo) |
SQLiteEdge Engineering Decision Criteria for In-Process SQLite 3.46 WAL vs Single-Node PostgreSQL 17
- Because SQLite reads execute inside the host process virtual address space via mmap_size, rendering views with 15 sequential lookups incurs zero TCP round-trip wait.
- SQLite requires zero transaction-ID wraparound maintenance, though operators must monitor `-wal` checkpoint progress when running long read transactions.
- Pick SQLite WAL on Hostinger KVM or Vultr High Frequency for lean single-node simplicity; pick PostgreSQL 17 when multi-writer MVCC throughput or rich SQL extensions outweigh embedded simplicity.
SQLiteEdge Matched Infrastructure Routes for CMP-04
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Hostinger AMD EPYC Local NVMe KVM VPSReview Hostinger Specs (CMP-04) via SQLiteEdge →
Best $4.99–$10.49 AMD EPYC Gen4 NVMe KVM for PocketBase, Dokploy & Rails 8 Kamal + Extra Partner Discount (https://www.hostinger.com/vps-hosting) -
Vultr 3.5GHz+ High Frequency Local NVMe ComputeReview Vultr Option (CMP-04) via SQLiteEdge →
3.7GHz+ Single-Core IPC + Direct PCIe NVMe • ~0.045ms fsync for Peak SQLite Single-Writer TPS (https://www.vultr.com/pricing/)