Struct Config 

#[non_exhaustive]
pub struct Config {
    pub max_entries: usize,
    pub token_budget: usize,
    pub db_path: PathBuf,
    pub eviction_policy: EvictionPolicy,
    pub recency_half_life_secs: f64,
    pub lexicon_boost_clamp: f64,
    pub scrub: ScrubConfig,
}

Runtime configuration for the context engine.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

max_entries: usize

Maximum number of entries to retain.

token_budget: usize

Total token budget for context injection.

db_path: PathBuf

Path to the backing database file.

The default (:memory:) is an in-memory SQLite database that is ephemeral — all data is lost when the connection pool is dropped. Set a real filesystem path for durable persistence.

eviction_policy: EvictionPolicy

Strategy used when the store reaches capacity.

recency_half_life_secs: f64

Recency decay half-life in seconds.

Controls how fast older entries lose relevance. A value of 259200 (72 hours) means an entry’s score halves every 3 days.

lexicon_boost_clamp: f64

Maximum absolute lexicon boost, i.e. the relevance↔importance dial.

The lexicon scorer’s output enters ranking as a multiplier 1.0 + boost.clamp(-c, c) on the fused relevance score, where c is this value. 0.0 disables lexicon influence entirely (pure relevance); larger values give importance signals more weight at the cost of relevance precision. See DEFAULT_LEXICON_BOOST_CLAMP for the rationale behind the conservative default. Negative or non-finite values are treated as the default.

scrub: ScrubConfig

Secret-scrubbing configuration applied to entry content at save time.

Trait Implementations

impl Clone for Config

fn clone(&self) -> Config

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Config

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

Formats the value using the given formatter.

impl Default for Config

fn default() -> Self

Defaults: 10,000 max entries, an 8,192-token budget, an in-memory database (see Self::db_path for persistence caveats), LRU eviction, the default 72-hour recency half-life, and secret scrubbing enabled.

impl<'de> Deserialize<'de> for Config

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Config

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.