Session memory and improve()

cognee has two kinds of memory:

• Session memory: a fast cache of conversation turns, agent traces, and feedback, keyed by session_id. Writing is instant, with no LLM extraction.
• The permanent graph: what remember() builds without a session.

improve() connects them. It bridges session content into the graph and enriches the graph itself. remember() calls it automatically, so most users never call it directly.

import cognee

# Session write: returns immediately; improve() bridges it in the background
await cognee.remember("User prefers dark mode.", session_id="chat_1")