… is a KISS content addressable blob storage system.
All blobs are hashed using SHA256 and stored in a single level prefix tree where the first two bytes of the hash determine the folder or branch name and the remaining 62 bytes determine the file name.
The CaBS executable offers commands for adding, retrieving and validating blobs using their hash, i.e. their content. Additionally it generates storage digest hash values summarizing a complete store.This allows for trivial comparison between multiple instances of the same store.
The goal is to develop a trivially synchronizable blob storage system that is useful both as a deduplicated storage for files one doesn't wish to name explicitly and as a foundation for higher order storage systems.
> echo "Hello world!" | cabs add
0b/a904eae8773b70c75333db4de2f3ac45a8ad4ddba1b242f0b3cfc199391dd8
> cat (cabs get "0ba904eae8773b70c75333db4de2f3ac45a8ad4ddba1b242f0b3cfc199391dd8")
Hello world!
> echo "Digest test" | cabs add
25/886f4eb2f10ed08b315b068221f1d9bc64d23b4f84fd54ca8ab0169f9ce207
> cabs ls-blobs
0ba904eae8773b70c75333db4de2f3ac45a8ad4ddba1b242f0b3cfc199391dd8
25886f4eb2f10ed08b315b068221f1d9bc64d23b4f84fd54ca8ab0169f9ce207
> cabs digest
75e72b213bd9f1aecbb146a40f5f6f13144bd427d098ce813feb8a59e8339ff7
CaBS synchronize allows two-way syncing of multiple arbitrary storage instances at one go.