JSON changed the world, but the world has changed since JSON. xCDN is designed for modern cognitive computing, retaining the simplicity of JSON while adding the semantic richness, streaming capabilities, and types that modern developers actually need.
| Feature | Description |
|---|---|
| 🧠 Native Types | First-class support for Decimal, UUID, DateTime, Duration, and Bytes. No more string parsing guesswork. |
| 🏷️ Semantic Tags | Apply application-level logic with tags like #money, #color, or #user. |
| 📝 Comments | finally. // Single line and /* Block comments */. |
| 🌊 Streaming | Built-in support for sequences of values. Perfect for logs and event streams. |
| ✨ Annotations | Non-intrusive metadata using @meta. Add hints without dirtying your data model. |
| 🔧 Human Friendly | Unquoted keys, trailing commas, and multi-line strings ("""). |
Official xCDN parser implementations:
- Rust: xCDN-Rust
- Python: xCDN-Python
/* -----------------------------
XCDN: Clean, Typed, Powerful.
---------------------------- */
$schema: "https://gslf.github.io/xCDN/schemas/v1/meta.xcdn",
server_config: {
host: "localhost",
// Unquoted keys & trailing commas? Yes.
ports: [8080, 9090,],
// Native Decimals & ISO8601 Duration
timeout: r"PT30S",
max_cost: d"19.99",
// Semantic Tagging
admin: #user {
id: u"550e8400-e29b-41d4-a716-446655440000",
role: "superuser"
},
// Binary data handling
icon: @mime("image/png") b"iVBORw0KGgoAAAANSUhEUgAAAAUA...",
}
For parser implementers and HTTP configuration:
| Property | Value |
|---|---|
| MIME Type | application/xcdn |
| File Extension | .xcdn |
| Magic Bytes | None (text-based) |
| Uniform Type Identifier (Apple) | org.xcdn.document |