Welcome to the next step in your journey of creating a personal tutor with DeepSeek! In the previous lessons, you learned how to send queries to DeepSeek's language model, explored model parameters, maintained tutoring session history, and personalized AI behavior with system prompts. Now, we will focus on managing multiple tutoring sessions. This is crucial for applications where you need to handle several educational interactions simultaneously, such as a tutoring platform serving multiple students. By the end of this lesson, you will be able to create and manage multiple tutoring sessions using DeepSeek's API in C#, setting the stage for more complex educational interactions.

In a tutoring application, each educational interaction should be treated as a separate session. To achieve this, we use unique identifiers for each tutoring session. This ensures that queries and explanations are correctly associated with their respective sessions. In C#, we use Guid.NewGuid().ToString() to generate a unique identifier for each tutoring session. When a new tutoring session is created, a unique sessionId is generated, and an empty history is initialized.

We store tutoring history in a dictionary called tutoringSessions, where each key is a unique sessionId and the value is a list of messages representing the conversation history. When a new session is created, we also add a system prompt to the session's history to define the tutor's behavior.

This approach ensures that each tutoring session is uniquely identified and maintains its own conversation history, allowing for distinct and coherent educational interactions.

Once a tutoring session is established, you can send queries and receive explanations from the DeepSeek model. It's important to maintain the context by sending the full tutoring history to the model. However, keep in mind that language models have a context window, which limits the amount of conversation history they can process at once. If the conversation becomes too large, you should trim the history by removing the oldest messages and passing only the most recent ones.

Below is an updated asynchronous method for sending a query and receiving an explanation, matching the approach used in the practice section. The method takes a sessionId and a userQuery as inputs, adds the query to the tutoring history, and requests an explanation from the AI. The explanation is then processed and added to the tutoring history, ensuring continuity in the educational interaction.

Managing multiple tutoring sessions simultaneously is a crucial feature for advanced educational applications. By using unique identifiers, you can create and interact with different tutoring sessions independently, ensuring that each educational interaction remains distinct and contextually accurate. Below, we demonstrate this by initiating a first session and sending queries to it.

Output for the first tutoring session (example):

Now, let's create a second tutoring session and interact with it.

Output for the second tutoring session (example):

This approach not only maintains the integrity of each tutoring session but also enhances scalability, making it ideal for applications like online tutoring platforms where multiple educational interactions occur simultaneously. By keeping tutoring sessions separate, you can provide personalized educational support to each student.

In this lesson, you learned how to manage multiple tutoring sessions using DeepSeek's API in C#. We covered creating unique tutoring sessions, maintaining educational interaction history, and handling multiple sessions simultaneously. These skills are essential for building scalable educational applications that can support numerous students at once. As you move on to the practice exercises, I encourage you to apply what you've learned by creating and managing tutoring sessions independently. This hands-on practice will reinforce your understanding and prepare you for more advanced educational AI development. Keep up the great work, and enjoy the journey of creating your personal tutor with DeepSeek!