d_engine_core/config/
storage.rs

1use serde::Deserialize;
2use serde::Serialize;
3
4use crate::Result;
5
6/// Storage engine infrastructure configuration.
7///
8/// Controls low-level storage backend behavior, independent of Raft protocol
9/// semantics. Sits at the same level as `network` and `tls` — infrastructure,
10/// not protocol behavior.
11#[derive(Serialize, Deserialize, Clone, Default)]
12pub struct StorageConfig {
13    /// Use a single shared RocksDB instance (4 column families) instead of two
14    /// separate DB instances (one for Raft log + meta, one for state machine).
15    ///
16    /// When `true`: one 128 MB block cache, one background thread pool, one
17    /// file-descriptor budget — halves resource usage on developer machines.
18    ///
19    /// When `false` (default): each DB instance manages its own resources,
20    /// providing stronger isolation between the log and state machine workloads.
21    #[serde(default)]
22    pub unified_db: bool,
23}
24
25impl StorageConfig {
26    pub fn validate(&self) -> Result<()> {
27        Ok(())
28    }
29}
d_engine_core/config/storage.rs

d_engine_core/config/
storage.rs
