Memory for agents – Azure Cosmos DB (W6, lesson 16)

What you learn in this lesson

map short-term and long-term memory to items in the container conversations

justify the partition key and item shape for history and facts

plan forgetting with TTL and the deletion of a person

place semantic memory and name the limits with hierarchical keys

store the history with the Agent Framework and settle the privacy points

The support chat of Kladde.Verlauf is supposed to remember: the conversation from a moment ago and what an office has said about itself, such as "please answer in German". Both belong in the container conversations (F-03, key /officeId, /userId, /conversationId). How an agent uses its memory is shown by "AI track, Lesson T7.5"; this lesson shows how it sits in Cosmos DB.

Not run against Azure: all blocks are compiled with Microsoft.Azure.Cosmos 3.64.0, Newtonsoft.Json 13.0.4, Microsoft.Agents.AI 1.28.0 and Microsoft.Agents.AI.CosmosNoSql 1.28.0-preview.261106.1; only the stand-in was run. This lesson changes none of the facts F-01 to F-08.

Two kinds of memory

Learn separates short-term (the latest conversation turns, intermediate states, tool results; may expire via TTL) and long-term (preferences and summaries across conversations). History and state from T7.5 are short-term, the remembered preferences long-term.

This lesson belongs to course W6

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