Struct TtlConfig 

pub struct TtlConfig {
    pub default_ttl: Option<Duration>,
    pub sweep_interval: Duration,
    pub max_checkpoints: Option<usize>,
}

Time-to-live configuration for checkpoint expiration

Configures automatic cleanup of old checkpoints per design spec §5.7.

Fields

default_ttl: Option<Duration>

Default TTL for checkpoints (None = no expiration)

sweep_interval: Duration

Interval between cleanup sweeps for active background cleanup

max_checkpoints: Option<usize>

Maximum number of checkpoints to retain per thread/namespace (None = unlimited)

Implementations

impl TtlConfig

pub const fn new( default_ttl: Option<Duration>, sweep_interval: Duration, max_checkpoints: Option<usize>, ) -> Self

Create a new TTL configuration

Arguments

• default_ttl - Default time-to-live for checkpoints (None = no expiration)
• sweep_interval - Interval between active cleanup sweeps
• max_checkpoints - Maximum checkpoints to retain (None = unlimited)

pub const fn disabled() -> Self

Create a TTL configuration with no expiration (default)

pub fn is_expired(&self, created_at_str: &str) -> bool

Check if a checkpoint has expired based on its creation time

Arguments

• created_at_str - ISO 8601 timestamp string from checkpoint

Returns

• true if checkpoint is expired and should be cleaned up
• false if checkpoint is still valid

Trait Implementations

impl Clone for TtlConfig

fn clone(&self) -> TtlConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TtlConfig

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

Formats the value using the given formatter.

impl Default for TtlConfig

fn default() -> Self

Returns the “default value” for a type.