Architecture Patterns · Fast-moving · Intermediate

AI Memory

Mechanisms that let an assistant retain useful information across turns and sessions beyond the context window.

What AI Memory is

Memory covers short-term conversation state, summarised history, and long-term stored facts about a user or project that are retrieved when relevant.

How it works

Implementations write salient facts to a store, retrieve them by similarity or rule at the start of a session, and periodically summarise or expire stale entries. Explicit user control over what is remembered is increasingly expected.

Why it matters

Memory is what makes an assistant feel like a colleague rather than a stranger every morning, and it is a privacy surface that needs deliberate design.

Common uses

→Personal assistants
→Long-running agent tasks
→Customer support continuity

Strengths

✓Continuity and personalisation
✓Shorter prompts for repeat context

Watch for

✓Stale or wrong memories persist
✓Privacy and deletion obligations

Continue exploring

Context Window Retrieval-Augmented Generation AI Personalization Data Privacy in AI