Welcome back! Now that you've learned how to work with numbers in Redis using C#, it's time to build on that knowledge and explore some basic operations with these numbers. This lesson will show you how to perform operations like incrementing, decrementing, and modifying numeric values directly in Redis.

In this lesson, you will learn how to:

1. Increment and decrement numeric values.
2. Modify numeric values using operations such as increments by a floating point.

Here's the code snippet that we'll be working with:

• After setting initial values for count, completion_rate, and duration, we perform various operations:
  • StringDecrement("count") decreases the value of count by 1. In C#, you can also provide an additional parameter to specify the decrement value: db.StringDecrement("count", 2) will decrement count by 2. Note that StringDecrement can only be used on numeric values.
  • StringIncrement("completion_rate", 1.5) increments completion_rate by 1.5. This method can be applied to integer and floating-point values, allowing flexibility.
  • StringIncrement("duration") increases the duration by 1. Similar to decrementing, you can specify the increment value: db.StringIncrement("duration", 5) will increment duration by 5.
• Finally, we retrieve the values and convert them to the required data type for proper display.

Understanding how to perform operations with numbers in Redis is essential for real-world applications. Imagine you're building a learning management system: you would track user progress, completion rates, and time spent on courses. Redis makes it fast and easy to update these numbers in real-time.

By the end of this lesson, you'll be comfortable with basic numeric operations in Redis, preparing you for more advanced tasks. Ready to get started? Let's dive into the practice section and enhance your Redis skills!