Redis Memory Management and Eviction Policies

When your Redis database runs out of memory, your entire application can grind to a halt. Understanding how Redis stores data and handles memory limits is crucial for maintaining high-performance systems. This text-only course guides you through the foundational concepts of Redis memory management. You will transition from understanding basic memory allocation to confidently configuring eviction policies that suit your specific application workloads. What you'll learn: - Understand Redis memory allocation and how the server monitors memory usage. - Configure maxmemory limits and handle out-of-memory errors effectively. - Compare eviction policies like LRU, LFU, and random deletion to choose the best strategy. - Apply key eviction algorithms to balance performance and data retention. - Monitor memory fragmentation and understand modern active defragmentation techniques. You will start with core memory concepts and terminology before exploring practical configuration scenarios. Through clear written explanations and configuration examples, you will learn how to optimize Redis for caching, session storage, or persistent queues. This course is designed for backend developers, system administrators, and database beginners who want to build stable Redis deployments. No prior memory-tuning experience is required. Start reading today to build a more resilient, high-performance Redis database.