storage of bot state

Hi sowmyaseetha,

There are a few ways to store user specific data for a bot app created using Teams Toolkit, including CosmosDB, memory storage, and file storage.

Session and var are two ways to store data in memory storage. Session variables are stored for the duration of a user's session, while var variables are stored for the duration of the bot's execution.

To use session variables, you can use the bot.session.set() and bot.session.get() methods. To use var variables, you can use the bot.var.set() and bot.var.get() methods.

Example:

// Store a user's token in a session variable.
bot.session.set('token', 'my_token');

// Retrieve the user's token from the session variable.
const token = bot.session.get('token');

To use file storage, you can use the bot.fs module. This module allows you to read and write files to the bot's file system.

Example:

// Write the user's token to a file.
fs.writeFileSync('token.txt', token);

// Read the user's token from the file.
const token = fs.readFileSync('token.txt');

- If you need to store data for a long period of time, then CosmosDB is a good option.
- If you need to store data for the duration of a user's session, then session variables are a good option.
- If you need to store data for the duration of the bot's execution, then var variables are a good option. - If you need to store a small amount of data that is not sensitive, then file storage is a good option.

here are some usefull links to resources on storing user specific data for a Teams bot app:

• Microsoft Docs: Manage state in Bot Framework SDK: https://learn.microsoft.com/en-us/azure/bot-service/bot-builder-concept-state?view=azure-bot-service-4.0
• Microsoft Docs: Save user and conversation data: https://dev.to/albertbennett/how-to-save-conversation-data-in-an-microsoft-chatbot-22ml
• Microsoft Docs: Use Cosmos DB to store bot state: https://learn.microsoft.com/en-us/azure/bot-service/bot-builder-howto-v4-storage?view=azure-bot-service-4.0
• Microsoft Docs: Use memory storage to store bot state: https://learn.microsoft.com/en-us/azure/bot-service/bot-builder-howto-v4-storage?view=azure-bot-service-4.0
• Microsoft Docs: Use file storage to store bot state: https://learn.microsoft.com/en-us/azure/bot-service/bot-builder-howto-v4-storage?view=azure-bot-service-4.0
• Microsoft blog post: Use Cosmos DB to store state for your Microsoft Teams bot: https://learn.microsoft.com/en-us/azure/bot-service/bot-builder-howto-v4-storage?view=azure-bot-service-4.0
• Microsoft blog post: Manage state in your Microsoft Teams bot using the Bot Framework SDK: https://learn.microsoft.com/en-us/azure/bot-service/bot-builder-concept-state?view=azure-bot-service-4.0