[3] Features include caching,[4] full file-system encryption using the ChaCha20 and Poly1305 algorithms,[5] native compression[4] via LZ4, gzip[6] and Zstandard,[7] snapshots,[4] CRC-32C and 64-bit checksumming.
[7] On a data structure level, bcachefs uses B-trees like many other modern file systems, but with an unusually large node size defaulting to 256 KiB.
[9] Snapshots are not implemented by cloning a COW tree, but by adding a version number to filesystem objects.
[10] The COW feature and the bucket allocator enables a RAID implementation which is claimed to not suffer from the write hole nor IO fragmentation.
Some time after Bcache was merged in 2013 into the mainline Linux kernel, Overstreet left his job at Google to work full-time on Bcachefs.