Description
Add MilvusMemoryService, an implementation of BaseMemoryService that uses Milvus as the vector store for cross-session conversation memory.
Motivation
ADK's existing memory services (InMemoryMemoryService, VertexAiMemoryBankService, VertexAiRagMemoryService) either lack semantic search or require GCP infrastructure. Milvus provides a lightweight, open-source alternative that supports local (Milvus Lite), self-hosted, and fully managed (Zilliz Cloud) deployments.
This complements the MilvusToolset (PR google/adk-python#4417) which handles RAG knowledge base search, by adding a separate memory persistence layer for conversation history.
Proposed Solution
MilvusMemoryService(BaseMemoryService): stores session events as vector-embedded text in Milvus, with app_name/user_id scoping and deduplication.- Users provide their own embedding function (e.g., Google GenAI
gemini-embedding-001).
- Works with
PreloadMemoryTool and LoadMemoryTool out of the box.
Related PR
google/adk-python#4417
Description
Add
MilvusMemoryService, an implementation ofBaseMemoryServicethat uses Milvus as the vector store for cross-session conversation memory.Motivation
ADK's existing memory services (
InMemoryMemoryService,VertexAiMemoryBankService,VertexAiRagMemoryService) either lack semantic search or require GCP infrastructure. Milvus provides a lightweight, open-source alternative that supports local (Milvus Lite), self-hosted, and fully managed (Zilliz Cloud) deployments.This complements the
MilvusToolset(PR google/adk-python#4417) which handles RAG knowledge base search, by adding a separate memory persistence layer for conversation history.Proposed Solution
MilvusMemoryService(BaseMemoryService): stores session events as vector-embedded text in Milvus, withapp_name/user_idscoping and deduplication.gemini-embedding-001).PreloadMemoryToolandLoadMemoryToolout of the box.Related PR
google/adk-python#4417