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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 ...

LRU vs. LFU Eviction PoliciesLeast Recently Used (LRU) and Least Frequently Used (LFU) are common cache eviction strategies. LRU tracks the time since last access, evicting the oldest entry when capacity is reached. LFU prioritizes access frequency, evicting entries with the lowest hit count. When multiple entries share the same minimum frequen ...

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 ...