Understanding Redis Memory Eviction Strategies

Configuring maxmemory in Redis Estimating the Right Memory Limit Since Redis is an in-memory data store, it's wise to allocate only enough memory for frequently accessed data. The 80/20 rule (Pareto principle) often applies: about 20% of the data handles 80% of the requests. If your backing database is 10 GB, you might set Redis to 2 GB. Howeve ...

Posted on Tue, 16 Jun 2026 17:54:07 +0000 by zyrolasting

Redis Eviction Mechanisms and Policies Explained

Redis uses eviction policies to manage memory when the maxmemory limit is reached. These policies determine which keys to remove to free up space for new data. Eviction Policies 1. noeviction (default): When memory usage reaches maxmemory, Redis does not evict any existing data. Instead, it returns an error for write requests. This means the ca ...

Posted on Sun, 17 May 2026 11:08:43 +0000 by ercantan