Redis is a widely used in-memory database, renowned for its speed and efficiency. However, prolonged usage can lead to memory fragmentation issues, impacting performance and efficiency. In this blog post, we’ll explore Redis memory fragmentation using a vivid analogy and discuss how Redis’ active defragmentation feature can mitigate these issues. The Courier Box Anology Imagine Redis’ memory space as a courier box used for storing items. Initially, the box is neatly organized, efficiently storing items of various sizes.