File	Description
`suspend_resume_session.py`	Suspend and resume conversation sessions, comparing service-managed sessions (Azure AI Foundry) with in-memory sessions (OpenAI).
`custom_history_provider.py`	Implement a custom history provider by extending `HistoryProvider`, enabling conversation persistence in your preferred storage backend.
`file_history_provider.py`	Use the experimental `FileHistoryProvider` with `FoundryChatClient` and a function tool so the local JSON Lines file shows the full tool-calling loop.
`file_history_provider_conversation_persistence.py`	Persist a tool-driven weather conversation with `FileHistoryProvider`, inspect the stored JSONL records, and continue with another city.
`cosmos_history_provider.py`	Use Azure Cosmos DB as a history provider for durable conversation storage with `CosmosHistoryProvider`.
`cosmos_history_provider_conversation_persistence.py`	Persist and resume conversations across application restarts using `CosmosHistoryProvider` — serialize session state, restore it, and continue with full Cosmos DB history.
`cosmos_history_provider_messages.py`	Direct message history operations — retrieve stored messages as a transcript, clear session history, and verify data deletion.
`cosmos_history_provider_sessions.py`	Multi-session and multi-tenant management — per-tenant session isolation, `list_sessions()` to enumerate, switch between sessions, and resume specific conversations.
`redis_history_provider.py`	Use Redis as a history provider for persistent conversation history storage across sessions.

Prerequisites

For suspend_resume_session.py:

FOUNDRY_PROJECT_ENDPOINT: Your Azure AI Foundry project endpoint (service-managed session)
FOUNDRY_MODEL: The Foundry model deployment name
OPENAI_API_KEY: Your OpenAI API key (in-memory session)
Azure CLI authentication (az login)

For custom_history_provider.py:

OPENAI_API_KEY: Your OpenAI API key

For file_history_provider.py:

FOUNDRY_PROJECT_ENDPOINT: Your Azure AI Foundry project endpoint
FOUNDRY_MODEL: The Foundry model deployment name
Azure CLI authentication (az login)
The sample writes plaintext JSONL conversation logs to disk; use a trusted local directory and avoid treating the history files as secure secret storage

For file_history_provider_conversation_persistence.py:

FOUNDRY_PROJECT_ENDPOINT: Your Azure AI Foundry project endpoint
FOUNDRY_MODEL: The Foundry model deployment name
Azure CLI authentication (az login)
The sample writes plaintext JSONL conversation logs to disk; use a trusted local directory and avoid treating the history files as secure secret storage

For Cosmos DB samples (cosmos_history_provider*.py):

FOUNDRY_PROJECT_ENDPOINT: Your Azure AI Foundry project endpoint
FOUNDRY_MODEL: The Foundry model deployment name
AZURE_COSMOS_ENDPOINT: Your Azure Cosmos DB account endpoint
AZURE_COSMOS_DATABASE_NAME: The database that stores conversation history
AZURE_COSMOS_CONTAINER_NAME: The container that stores conversation history
Either AZURE_COSMOS_KEY or Azure CLI authentication (az login)

For redis_history_provider.py:

OPENAI_API_KEY: Your OpenAI API key
A running Redis server — default URL is redis://localhost:6379
- Override via the REDIS_URL environment variable for remote or authenticated instances
- Quickstart with Docker: docker run -d --name redis-stack -p 6379:6379 redis/redis-stack-server:latest