⚡ v7.5.2 — 2,164 tests passing, zero dependencies

The database that fits
in a ~154 KB binary

Full SQL engine, vector search, graph database, full-text search — all in one tiny, fast, zero-dependency C library. PostgreSQL wire-compatible.

absdb — in-memory
$ ./build/absdb
Absolute DB v7.5.2 — type SQL or \help
absdb> CREATE TABLE users (id INTEGER PRIMARY KEY, name TEXT, email TEXT);
absdb> INSERT INTO users VALUES (1, 'Alice', 'alice@acme.com');
absdb> SELECT * FROM users;
1 │ Alice │ alice@acme.com
absdb> -- Vector search
absdb> SELECT * FROM embeddings ORDER BY vec <-> '[0.1,0.2,...,0.9]' LIMIT 10;
10 rows — 0.1 ms
~154 KB
Binary size
0
Dependencies
304K/s
Inserts/sec
0.1ms
Vector top-10
14.9M/s
Live notifications
2,164
Tests passing
Everything included

One binary. Every feature.

Community edition is free forever. No feature flags, no license nags — just the full engine.

🗄️

Full SQL Engine

142 keywords, JOINs, CTEs, window functions, subqueries, prepared statements, stored procedures, triggers, full ACID compliance.

🔍

Vector Search

Built-in HNSW index. Top-10 in 0.1 ms. L2, cosine, and inner-product distance. 4,096-dim support. No extension needed.

🕸️

Graph Database

RELATE, edge traversal, BFS shortest path, AI context graphs — all in SQL. 1.3 B edges/sec.

📝

Full-Text Search

BM25 ranking, inverted index, snippet highlighting. Query in the same SQL statement as relational data.

Live Queries

Real-time push notifications at 14.9 M events/sec. Subscribe to INSERT/UPDATE/DELETE on any table.

🔒

Full ACID Transactions

Snapshot isolation, savepoints, instant crash recovery, foreign keys with CASCADE/SET NULL/RESTRICT — data always consistent.

🌐

PostgreSQL Compatible

Full PG v3 wire protocol. Connect with psql, psycopg2, JDBC, pgAdmin, DBeaver — zero code changes.

🔧

REST API + Web UI

JSON over HTTP. 8-panel management console: Dashboard, SQL, Tables, Graph, Vector, Users, Monitor, Deploy.

🚀

Zero Dependencies

Pure C11. No OpenSSL, no Boost, no runtime. Ships as a single ~154 KB binary. Starts in <2 seconds.

Benchmarks

Measurably fast. Verifiably real.

All numbers are from make all. Run them yourself — they're embedded in the test suite.

Write Performance

Multi-row INSERT (10K rows) 578K/s
Single-row INSERT (10K rows) 175K/s
Graph RELATE (10K edges) 1.28M/s

Read & Search Performance

Point query (indexed, 10K rows) 2.9 µs
Vector top-10 (HNSW, dim=128) 0.1 ms
In-memory index lookups 9.8M/s
Live notifications 14.9M/s

Measured on a standard Linux VM. Source: make all output, embedded in test suites 2–4.

Quick start

Up and running in under 60 seconds

bash — Linux / macOS / WSL
# Download and build
curl -sSL https://absolutedb.com/install.sh | bash
cd absdb
make release                     # Single binary, zero deps

# Interactive CLI
./bin/absdb               # In-memory mode
./bin/absdb mydb.db       # File-backed mode

# Start the server (PostgreSQL wire + REST API)
./bin/absdb-server
# → Listening on :5432 (PG wire) and :8080 (HTTP)

# Connect with psql
psql -h localhost -p 5432 -U $(whoami)
The Power of Four Tiers

Designed so every developer and business can start at zero cost, without ever hitting a ceiling.

Community
$0/month
For individuals, students and open-source projects. No sign-up, no telemetry.
  • Unified Query Core (SQL + Vector + Graph)
  • Data Elasticity: 10 GB
  • Simultaneous Connections: 10
  • PostgreSQL wire protocol
  • REST API + Web console
  • No commercial use
Download Free →
SME Free
$0/month
Free for commercial businesses with annual revenue under USD $1,000,000.
  • Unified Query Core (SQL + Vector + Graph)
  • Data Elasticity: 5 GB
  • Simultaneous Connections: 500
  • Commercial Application ✓
  • PostgreSQL wire protocol
  • REST API + Web console
  • Revenue must stay under $1M/yr
Download Free →
Enterprise
$499/mo per cluster
For mission-critical deployments and regulated industries.
  • Autonomous Clustering (Raft-S Logic)
  • Global Geometry (Geo-Routing / CRDT)
  • Hardware-Level Encryption (KMS / HSM)
  • Hyper-Isolated Multi-Tenancy
  • Petabyte Tiered Storage Architecture
  • RAID-S Distributed Compute Fabric
  • Adaptive Workload Governor
  • Dedicated 24/7 Priority Engineering
Contact Enterprise →

Same binary for all tiers — your DM Data Vault licence key activates capabilities. Full comparison →

Ready to use a database that just works?

Download the Community edition free. No sign-up, no telemetry, no nags.