holochain_persistence_file 0.0.18

persistence for content addressable storage and entity attribute value indexes. A file system based implementation using directory hieraarchies to navigate data.


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License: Apache-2.0


Filesystem persistence implementations for holochain. Provides content addressable storage (CAS) and entity attribute value (index) associations using hiearchical based filesystem storage.


Add holochain_persistence_file crate to your Cargo.toml. Below is a stub for creating a storage unit and adding some content.

use holochain_persistence_file::cas::file::FilesystemStorage;
use tempfile::tempdir;

pub fn init() -> FilesystemStorage {
  let dir = tempdir().expect("Could not create a tempdir for CAS.");
  let store = FilesystemStorage::new(dir.path()).unwrap();
  store.add(<some_content>).expect("added some content");


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License: Apache-2.0

Copyright (C) 2019, Holochain Foundation

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at


Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.