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Compactor

cascade_agent::memory::compaction

Struct Compactor 

Source 
pub struct Compactor { /* private fields */ }
Expand description

Context compactor that summarizes older messages to stay within token limits.

Strategy:

  1. Always keep the system prompt (first message).
  2. Keep the most recent N messages that fit within token_limit * target_ratio.
  3. Summarize all messages in between into a single system message.
  4. If summarization fails, the original messages are preserved (no data loss).

Implementations§

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impl Compactor

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pub fn new( settings: &MemorySettings, cascade_config: Arc<AppConfig>, db_conn: Connection, ) -> Self

Create a new compactor.

§Arguments
  • settings - Memory settings containing the summarization cascade name and target ratio
  • cascade_config - The llm-cascade AppConfig for LLM inference
  • db_conn - SQLite connection for llm-cascade’s cooldown/logging
Source

pub async fn compact( &self, state: &mut impl ConversationStateAccess, token_counter: &TokenCounter, token_limit: usize, ) -> Result<CompactionReport>

Compact conversation state if it exceeds the token limit.

Returns a CompactionReport with before/after statistics. If compaction is not needed, returns a report with no changes. If summarization fails, returns an error and leaves messages unchanged.

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