holt 0.3.1

An adaptive-radix-tree metadata storage engine for path-shaped keys, with per-blob concurrency and crash-safe persistence.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

//! Journal — logical WAL + replay.
//!
//! Layered design:
//!
//! - [`wal_op`] — the `WalOp` variant union for durable logical
//!   mutations (`Insert`, `Erase`, `RenameObject`, `Batch`).
//! - [`codec`] — binary record codec + file header. Pure
//!   in-memory bytes ↔ `WalOp`.
//! - [`writer`] — append-only WAL file with
//!   `sync_data`-on-flush durability + 64 KB buffered auto-drain
//!   mechanics.
//! - [`group_commit`] — dedicated append worker; foreground
//!   writers enqueue encoded records; sync waiters share one
//!   `sync_data` per short batch window.
//! - [`reader`] — forward replay scanner with graceful
//!   torn-tail handling. Unpacks `Batch` records into per-inner
//!   callbacks so consumers don't need a `Batch` arm.
//!
//! Checkpoint (flush WAL → drain dirty → fdatasync → truncate
//! WAL) lives in [`crate::Tree::checkpoint`] and the background
//! [`crate::checkpoint`] module, not in here — it straddles the
//! tree + journal boundary.

pub mod codec;
pub(crate) mod group_commit;
pub mod reader;
pub mod wal_op;
pub mod writer;

#[cfg(test)]
mod tests;