Struct ContextCacheConfig 

pub struct ContextCacheConfig {
    pub min_tokens: u32,
    pub ttl_seconds: u32,
    pub cache_intervals: u32,
}

Core traits and types.

Always available regardless of feature flags. Includes:

• Agent - The fundamental trait for all agents
• Tool / Toolset - For extending agents with capabilities
• Session / State - For managing conversation context
• Event - For streaming agent responses
• AdkError / Result - Unified error handling Configuration for automatic prompt caching lifecycle management.

When set on runner configuration, the runner will automatically create and manage cached content resources for supported providers (currently Gemini).

Example

use adk_core::ContextCacheConfig;

let config = ContextCacheConfig {
    min_tokens: 4096,
    ttl_seconds: 600,
    cache_intervals: 3,
};
assert_eq!(config.min_tokens, 4096);

Fields

min_tokens: u32

Minimum system instruction + tool token count to trigger caching. Set to 0 to disable caching.

ttl_seconds: u32

Cache time-to-live in seconds. Set to 0 to disable caching.

cache_intervals: u32

Maximum number of LLM invocations before cache refresh. After this many invocations, the runner creates a new cache and deletes the old one.

Trait Implementations

impl Clone for ContextCacheConfig

fn clone(&self) -> ContextCacheConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContextCacheConfig

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

Formats the value using the given formatter.

impl Default for ContextCacheConfig

fn default() -> ContextCacheConfig

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ContextCacheConfig

fn deserialize<__D>( __deserializer: __D, ) -> Result<ContextCacheConfig, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ContextCacheConfig

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

where __S: Serializer,

Serialize this value into the given Serde serializer.