Struct SnapshotConfig 

pub struct SnapshotConfig {
    pub enabled: bool,
    pub url: Option<String>,
    pub interval: Duration,
    pub keep: usize,
    pub snapshot_on_shutdown: bool,
    pub min_mutations: u64,
    pub max_resume_age_slots: u64,
    pub ready_max_lag_slots: u64,
    pub ready_max_hold: Duration,
}

Configuration for state snapshots. Disabled by default; enable via ServerBuilder::snapshots(...) or ARETE_SNAPSHOT_* env vars.

Fields

enabled: bool

Master opt-in.

url: Option<String>

Where blobs live: file:///var/lib/arete/snapshots, a plain path, or (with the snapshot-object-store feature) s3:///gs:///az://.

interval: Duration

Periodic snapshot cadence.

keep: usize

Retained snapshots; older ones are pruned after each write.

snapshot_on_shutdown: bool

Take a final snapshot on SIGTERM/SIGINT before exit.

min_mutations: u64

Skip a periodic cycle when fewer batches were applied since the last snapshot (quiet stacks snapshot rarely).

max_resume_age_slots: u64

If the snapshot is older than this many (estimated) slots, hydrate state but start the stream live instead of resuming from the watermark.

ready_max_lag_slots: u64

/ready stays 503 after a watermark resume until the projector is within this many slots of the observed tip…

ready_max_hold: Duration

…or until this much time has passed (guards quiet stacks, where the watermark never advances because nothing happens on-chain).

Implementations

impl SnapshotConfig

pub fn from_env() -> Result<Self>

Load snapshot settings from ARETE_SNAPSHOT_* env vars. Snapshots stay disabled unless ARETE_SNAPSHOT_ENABLED=true.

pub fn validate(&self) -> Result<()>

Trait Implementations

impl Clone for SnapshotConfig

fn clone(&self) -> SnapshotConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SnapshotConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SnapshotConfig

fn default() -> Self

Returns the “default value” for a type.