Posted on Jul 24 Caching is a common technique that programs use to speed up access to slow data sources by keeping a copy of the data in fast access memory. In Python, we can implement this concept in many ways, but let's talk about an exciting one: The ExpiringLRUCache!ExpiringLRUCache is a cache implementation that combines two powerful concepts: The Least Recently Used (LRU) cache eviction policy and an expiration time for cache entries. In simple terms, it remembers the most recently used items up to a specified limit and for a particular duration. After the duration expires or when the cache is full, it starts removing items, making room for the new ones. Sounds cool, right?But, how does ExpiringLRUCache decide which item to remove first? Here comes the CLOCK algorithm! It's a smart approximation of the LRU policy. Imagine a clock hand moving over each cache item. If the item is recently used, it gets a "second chance," and the hand moves on. If not, it's time to say goodbye to that item!Now, let's get our hands dirty with a fun example:With just a few lines of code, we've implemented a speedy cache! 🚀Though ExpiringLRUCache is quite efficient, there are a few ways to boost its performance:Remember, it's all about finding the right balance based on your specific needs!Caching is a powerful tool, and with Python's flexibility, we can customize it to our heart's content. ExpiringLRUCache and the CLOCK algorithm offer an efficient approach to caching, making our applications faster and more efficient. So, next time you find your program waiting for data, consider using an ExpiringLRUCache. It might just save your day!Happy caching! 🎉Templates let you quickly answer FAQs or store snippets for re-use. Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink. Hide child comments as well Confirm For further actions, you may consider blocking this person and/or reporting abuse Coffee Dev - May 1 CincyBC - May 1 Akshay Ballal - Jun 1 AtulKushwaha - Jun 3 Once suspended, sbalasa will not be able to comment or publish posts until their suspension is removed. Once unsuspended, sbalasa will be able to comment and publish posts again. Once unpublished, all posts by sbalasa will become hidden and only accessible to themselves. If sbalasa is not suspended, they can still re-publish their posts from their dashboard. Note: Once unpublished, this post will become invisible to the public and only accessible to Santhosh Balasa. They can still re-publish the post if they are not suspended. Thanks for keeping DEV Community safe. Here is what you can do to flag sbalasa: sbalasa consistently posts content that violates DEV Community's code of conduct because it is harassing, offensive or spammy. Unflagging sbalasa will restore default visibility to their posts. DEV Community — A constructive and inclusive social network for software developers. With you every step of your journey. Built on Forem — the open source software that powers DEV and other inclusive communities.Made with love and Ruby on Rails. DEV Community © 2016 - 2023. We're a place where coders share, stay up-to-date and grow their careers.