What role did Redis play in your previous project and for what purposes was it used?

In my previous project, Redis was used as a high-performance in-memory data store for caching frequently requested information. This significantly reduced the load on the main database and sped up the application's response.

The main uses of Redis were:

• Caching query results from the database.
• Storing user sessions for quick access.
• Implementing message queues and counters (e.g., view counts).

Example: When data was requested, the cache in Redis was checked first; if the data was missing, a database query was performed, and the result was then stored in Redis for subsequent requests.