Enum CacheTtl 

pub enum CacheTtl {
    FiveMinutes,
    OneHour,
    Off,
}

Cache-TTL knob exposed on AskConfig.

Anthropic’s ephemeral cache supports two TTLs:

• 5 minutes (default) — break-even at 2 calls per cached prefix; right for interactive REPL use where users ask a few questions in a session.
• 1 hour — costs 2× write premium instead of 1.25×; needs 3+ calls per prefix to break even. Worth it for long-running editor / desktop sessions where the same DB is queried sporadically over an hour.

Variants

FiveMinutes

OneHour

Off

Disables caching — schema block is sent without a cache_control marker. Useful when the schema is below the model’s minimum cacheable prefix size (~2K tokens for Sonnet, ~4K for Haiku/Opus); marking it would be a no-op.

Trait Implementations

impl Clone for CacheTtl

fn clone(&self) -> CacheTtl

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CacheTtl

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

Formats the value using the given formatter.

impl PartialEq for CacheTtl

fn eq(&self, other: &CacheTtl) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for CacheTtl

impl Eq for CacheTtl

impl StructuralPartialEq for CacheTtl