SawitDB

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SawitDB is a unique database solution stored in .sawit binary files.

The system features a custom Hybrid Paged Architecture similar to SQLite but supercharged with Object Caching, using fixed-size 4KB pages to ensure efficient memory usage and near-instant access. What differentiates SawitDB is its unique Agricultural Query Language (AQL), which replaces standard SQL keywords with Indonesian farming terminology.

Now available on NPM! Connect via TCP using sawitdb:// protocol.

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Please support our brothers and sisters in Aceh.


Organized by Human Initiative Aceh

Features

- Hybrid Paged Architecture: Data is stored in 4096-byte binary pages, but hot data is cached as native Objects for zero-copy reads.
- Single File Storage: All data, schema, and indexes are stored in a single .sawit file.
- High Stability: Uses 4KB atomic pages. More stable than a coalition government.
- Data Integrity (Anti-Korupsi): Implements strict fsync protocols. Data cannot be "corrupted" or "disappear" mysteriously like social aid funds (Bansos). No "Sunat Massal" here.
- Crash Recovery: Uses Write-Ahead Logging (WAL). Guarantees data always returns after a crash. Unlike a fugitive (Buronan) who is "hard to find".
- Zero Bureaucracy (Zero Deps): Built entirely with standard Node.js. No unnecessary "Vendor Pengadaan" or "Mark-up Anggaran".
- Transparansi: Query language is clear. No "Pasal Karet" (Ambiguous Laws) or "Rapat Tertutup" in 5-star hotels.
- Speed: Faster than printing an e-KTP at the Kelurahan.
- Network Support (NEW): Client-Server architecture with Multi-database support and Authentication.
- True Multi-Threading (NEW): Worker Pool architecture separates IO (Main Thread) from CPU (Worker Threads).
- Advanced SQL (NEW): Support for JOIN (Left/Right/Full/Cross), JAVING, DISTINCT, and more.
- NPM Support (NEW): Install via npm install @wowoengine/sawitdb.

Filosofi

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SawitDB dibangun dengan semangat "Kemandirian Data". Kami percaya database yang handal tidak butuh Infrastruktur Langit yang harganya triliunan tapi sering down. Berbeda dengan proyek negara yang mahal di budget tapi murah di kualitas, SawitDB menggunakan arsitektur Single File (.sawit) yang hemat biaya. Backup cukup copy-paste, tidak perlu sewa vendor konsultan asing. Fitur fsync kami menjamin data tertulis di disk, karena bagi kami, integritas data adalah harga mati, bukan sekadar bahan konferensi pers untuk minta maaf.

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SawitDB is built with the spirit of "Data Sovereignty". We believe a reliable database doesn't need "Sky Infrastructure" that costs trillions yet goes down often. Unlike state projects that are expensive in budget but cheap in quality, SawitDB uses a cost-effective Single File (.sawit) architecture. Backup is just copy-paste, no need to hire expensive foreign consultants. Our fsync feature guarantees data is written to disk, because for us, data integrity is non-negotiable, not just material for a press conference to apologize.

File List

- src/WowoEngine.js: Core Database Engine Entry Point.
- src/SawitServer.js: Server Class.
- src/SawitClient.js: Client Class.
- src/modules/: Core modules (QueryParser, BTreeIndex, WAL, Pager).
- src/services/: Logic services (TableManager, IndexManager, QueryExecutor).
- src/services/executors/: Specific query executors (Select, Insert, Update, Delete, Aggregate).
- src/services/logic/: Complex logic handlers (JoinProcessor, ConditionEvaluator).
- src/server/: Server components (AuthManager, RequestRouter, DatabaseRegistry).
- bin/sawit-server.js: Server executable.
- cli/: Command Line Interface tools (local, remote, test, bench).
- CHANGELOG.md: Version history.
- docs/DB Event: Database Event Documentation.

Installation

Install via NPM:

``bash
npm install @wowoengine/sawitdb
`

Quick Start

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`bash
node bin/sawit-server.js

Or with Cluster Mode enabled in .env

`
The server will start on 0.0.0.0:7878 by default.

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You can use the built-in CLI tool:
`bash
node cli/remote.js
`
Or use the SawitClient class in your Node.js application.

---

Dual Syntax Support

SawitDB introduces the Generic Syntax alongside the classic Agricultural Query Language (AQL), making it easier for developers familiar with standard SQL to adopt.

| Operation | Agricultural Query Language (AQL) | Generic SQL (Standard) |
| :--- | :--- | :--- |
| Create DB | BUKA WILAYAH sales_db | CREATE DATABASE sales_db |
| Use DB | MASUK WILAYAH sales_db | USE sales_db |
| Show DBs | LIHAT WILAYAH | SHOW DATABASES |
| Drop DB | BAKAR WILAYAH sales_db | DROP DATABASE sales_db |
| Create Table | LAHAN products | CREATE TABLE products |
| Insert | TANAM KE products (...) BIBIT (...) | INSERT INTO products (...) VALUES (...) |
| Select | PANEN DARI products DIMANA ... | SELECT FROM products WHERE ... |
| Update | PUPUK products DENGAN ... | UPDATE products SET ... |
| Delete | GUSUR DARI products DIMANA ... | DELETE FROM products WHERE ... |
| Indexing | INDEKS products PADA price | CREATE INDEX ON products (price) |
| Aggregation | HITUNG SUM(stock) DARI products | Same Syntax |

---

Query Syntax (Detailed)

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#### Create Table
`sql
-- Tani
LAHAN users
-- Generic
CREATE TABLE users
`

#### Show Tables
`sql
-- Tani
LIHAT LAHAN
-- Generic
SHOW TABLES
`

#### Drop Table
`sql
-- Tani
BAKAR LAHAN users
-- Generic
DROP TABLE users
`

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#### Insert Data
`sql
-- Tani
TANAM KE users (name, role) BIBIT ('Alice', 'Admin')
-- Generic
INSERT INTO users (name, role) VALUES ('Alice', 'Admin')
`

#### Select Data
`sql
-- Tani
PANEN name, role DARI users DIMANA role = 'Admin' ORDER BY name ASC LIMIT 10
-- Generic
SELECT name, role FROM users WHERE role = 'Admin' ORDER BY name ASC LIMIT 10
`
Operators: =, !=, >, <, >=, <=
Advanced: IN ('a','b'), LIKE 'pat%', BETWEEN 10 AND 20, IS NULL, IS NOT NULL

#### Pagination & Sorting
`sql
SELECT * FROM users ORDER BY age DESC LIMIT 5 OFFSET 10
SELECT * FROM users WHERE age BETWEEN 18 AND 30 AND status IS NOT NULL
`

#### Update Data
`sql
-- Tani
PUPUK users DENGAN role='SuperAdmin' DIMANA name='Alice'
-- Generic
UPDATE users SET role='SuperAdmin' WHERE name='Alice'
`

#### Delete Data
`sql
-- Tani
GUSUR DARI users DIMANA name='Bob'
-- Generic
DELETE FROM users WHERE name='Bob'
`

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#### Indexing
`sql
INDEKS [table] PADA [field]
-- or
CREATE INDEX ON [table] ([field])
`

#### Aggregation & Grouping
`sql
HITUNG COUNT(*) DARI [table]
HITUNG AVG(price) DARI [products] KELOMPOK [category]
-- With HAVING clause
HITUNG COUNT(*) DARI sales GROUP BY region HAVING count > 5
`

#### DISTINCT
`sql
SELECT DISTINCT category FROM products
-- Returns only unique values
`

#### JOIN Types
`sql
-- INNER JOIN (default)
SELECT * FROM orders JOIN customers ON orders.customer_id = customers.id

-- LEFT OUTER JOIN
SELECT * FROM employees LEFT JOIN departments ON employees.dept_id = departments.id

-- RIGHT OUTER JOIN
SELECT * FROM employees RIGHT JOIN departments ON employees.dept_id = departments.id

-- CROSS JOIN (Cartesian product)
SELECT * FROM colors CROSS JOIN sizes
`

#### EXPLAIN Query Plan
`sql
EXPLAIN SELECT * FROM users WHERE id = 5
-- Returns execution plan: scan type, index usage, join methods
`

Architecture Details

- Worker Pool (Multi-threaded):
- Main Thread: Handles strictly I/O (Networking, Protocol Parsing).
- Worker Threads: Execute queries in parallel using Least-Busy Load Balancing.
- Fault Tolerance: Automatic worker healing and stuck-query rejection.
- Storage Engine:
- Hybrid Paging: 4KB binary pages with In-Memory Object Cache for hot data.
- WAL (Write-Ahead Log): Ensures ACID properties and crash recovery.
- B-Tree Indexing: O(log n) lookups for high performance.
- Modular Codebase: Core logic separated into src/modules/ (Pager.js, ThreadPool.js, BTreeIndex.js).

Benchmark Performance

Test Environment: Single Thread, Windows Node.js (Local NVMe)

| Operation | Ops/Sec | Latency (avg) |
|-----------|---------|---------------|
| INSERT | ~22,000 | 0.045 ms |
| SELECT (PK Index) | ~247,288 | 0.004 ms |
| SELECT (Scan) | ~13,200 (10k rows) | 0.075 ms |
| UPDATE (Indexed) | ~11,000 | 0.090 ms |
| DELETE (Indexed) | ~19,000 | 0.052 ms |

Note: Hasil diatas adalah benchmark Internal (Engine-only). Untuk Network Benchmark (Cluster Mode), TPS berkisar ~20.000 (overhead jaringan).

Full Feature Comparison

| Feature | Tani Edition (AQL) | Generic SQL (Standard) | Notes |
|---------|-------------------|------------------------|-------|
| Create DB | BUKA WILAYAH [db] | CREATE DATABASE [db] | Creates .sawit in data/ |
| Use DB | MASUK WILAYAH [db] | USE [db] | Switch context |
| Show DBs | LIHAT WILAYAH | SHOW DATABASES | Lists available DBs |
| Drop DB | BAKAR WILAYAH [db] | DROP DATABASE [db] | Irreversible! |
| Create Table | LAHAN [table] | CREATE TABLE [table] | Schema-less creation |
| Show Tables | LIHAT LAHAN | SHOW TABLES | Lists tables in DB |
| Drop Table | BAKAR LAHAN [table] | DROP TABLE [table] | Deletes table & data |
| Insert | TANAM KE [table] ... BIBIT (...) | INSERT INTO [table] (...) VALUES (...) | Auto-ID if omitted |
| Select | PANEN ... DARI [table] DIMANA ... | SELECT ... FROM [table] WHERE ... | Supports Projection |
| Ordering | URUTKAN BERDASARKAN [col] [ASC/DESC/NAIK/TURUN] | ORDER BY [col] [ASC/DESC] | Sort results |
| Limit | HANYA [n] | LIMIT [n] | Limit rows |
| Offset | MULAI DARI [n] | OFFSET [n] | Skip rows |
| Update | PUPUK [table] DENGAN ... DIMANA ... | UPDATE [table] SET ... WHERE ... | Atomic update |
| Delete | GUSUR DARI [table] DIMANA ... | DELETE FROM [table] WHERE ... | Row-level deletion |
| Index | INDEKS [table] PADA [field] | CREATE INDEX ON [table] (field) | B-Tree Indexing |
| Count | HITUNG COUNT() DARI [table] | SELECT COUNT() FROM [table] (via HITUNG) | Aggregation |
| Sum | HITUNG SUM(col) DARI [table] | SELECT SUM(col) FROM [table] (via HITUNG) | Aggregation |
| Average | HITUNG AVG(col) DARI [table] | SELECT AVG(col) FROM [table] (via HITUNG) | Aggregation |
| Min/Max | HITUNG MIN(col) DARI [table] | SELECT MIN(col) FROM [table] (via HITUNG) | Aggregation |
| Grouping| KELOMPOK [col] | GROUP BY [col] | Group results |
| DISTINCT | PANEN DISTINCT col DARI [table] | SELECT DISTINCT col FROM [table] | Unique rows |
| LEFT JOIN | GABUNG KIRI [table] PADA ... | LEFT JOIN [table] ON ... | Outer join |
| RIGHT JOIN | GABUNG KANAN [table] PADA ... | RIGHT JOIN [table] ON ... | Outer join |
| CROSS JOIN | GABUNG SILANG [table] | CROSS JOIN [table] | Cartesian product |
| HAVING | DENGAN SYARAT count > 5 | HAVING count > 5 | Filter groups |
| EXPLAIN | JELASKAN SELECT ... | EXPLAIN SELECT ... | Query plan |

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| Operator | Syntax Example | Description |
|----------|----------------|-------------|
| Comparison | =, !=, >, <, >=, <= | Standard value comparison |
| Logical | AND, OR | Combine multiple conditions |
| In List | IN ('coffee', 'tea') | Matches any value in the list |
| Not In | NOT IN ('water') | Matches values NOT in list |
| Pattern | LIKE 'Jwa%' | Standard SQL wildcard matching |
| Range | BETWEEN 1000 AND 5000 | Inclusive range check |
| Null | IS NULL | Check if field is empty/null |
| Not Null | IS NOT NULL | Check if field has value |
| Distinct | SELECT DISTINCT col | Remove duplicate rows |
| Limit | LIMIT 10 | Restrict number of rows |
| Offset | OFFSET 5 | Skip first N rows (Pagination) |
| Order | ORDER BY price DESC | Sort by field (ASC/DESC) |

License

MIT License