Node.js built with V8 pointer compression enabled, delivering ~50% memory reduction for pointer-heavy data structures.
docker pull platformatic/node-caged:latest
docker run -it platformatic/node-caged nodeFloating tags (latest, trixie, slim, alpine) track the highest supported Node.js major (currently 26.x).
| Tag | Description |
|---|---|
latest, trixie |
Debian trixie, Node.js 26.x (recommended) |
slim |
Minimal Debian trixie-slim, Node.js 26.x |
alpine |
Alpine Linux with musl, Node.js 26.x (smallest) |
26, 26-slim, 26-alpine |
Latest Node.js 26.x |
25, 25-slim, 25-alpine |
Latest Node.js 25.x |
26.1.0, 26.1.0-slim, 26.1.0-alpine |
Pinned 26.x version |
25.6.0, 25.6.0-slim, 25.6.0-alpine |
Pinned 25.x version |
| Data Structure | Standard Node.js | Pointer Compressed | Savings |
|---|---|---|---|
| Array of Objects (1M) | 40.47 MB | 20.24 MB | 50% |
| Nested Objects (500K) | 50.21 MB | 24.64 MB | 51% |
| Linked List (500K) | 19.08 MB | 9.54 MB | 50% |
- Heap limit: 4GB per isolate (main thread + each worker has its own 4GB limit)
- Best for: Memory-constrained environments, high-density deployments
Note: The 4GB limit applies per V8 isolate. Using worker threads, you can exceed 4GB total memory (e.g., 4 workers = 20GB theoretical max).
Multi-arch images for linux/amd64 and linux/arm64.