🔧URL expiration can be set for a specific duration, such as 100 years, to allow short URLs to live for a long time.
🔑Users can create their own custom short URLs, with a length limit of 16 characters.
📈The system should be designed to handle a large number of shorten requests, such as 100 million per month.
🌐The system should provide REST APIs to allow users to integrate the URL shortening service into their own applications.
💡Caching can improve performance by storing frequently accessed short URLs in memory.