Document 2-tier GC #5
Description
Add documentation on how I envision GC working for ipcs:
- Containerd GC unpins root IPLD nodes
- If IPFS daemon is shared with other applications, how do I ensure I'm the last one to unpin that CID? Need some kind of pin refcounting (higher level IPFS proxy?)
- IPFS GC removes unreferenced IPLD nodes (and its unreferenced children)