Lib.rs

Embedded spatio-temporal database with 2D/3D indexing, persistence, and lazy TTL support.

Features

• Spatial indexing: 2D/3D points, polygons, bounding boxes with R*-tree spatial indexing
• Persistence: Append-only file (AOF) with configurable sync policies
• Lazy TTL: Expired items are filtered on read, manual cleanup available
• Atomic batches: Group multiple operations atomically
• Temporal queries: Filter by creation time (with time-index feature)

TTL Behavior

TTL is passive/lazy:

• Expired items return None on get() and are skipped in queries
• Items remain in storage until overwritten or manually cleaned with cleanup_expired()
• No automatic background cleanup or deletion on insert

Example

use spatio::{Point3d, Spatio};

let db = Spatio::memory()?;

// Spatial example
let point = Point3d::new(-74.0060, 40.7128, 0.0);
db.update_location("cities", "nyc", point.clone(), serde_json::json!({"name": "NYC"}))?;
let nearby = db.query_current_within_radius("cities", &point, 1000.0, 10)?;