Why there is no real LRU eviction algorithm in Redis?

Why there is no real LRU eviction algorithm in Redis? - Google Groups

Long story short, if you flip it around and perform 62 probes initially to evict 10 elements (only evicting after you've done all of the probes, 32 initial plus ...

How slow is Redis when full and evicting keys ? (LRU algorithm)

Redis "LRU" is only a best effort algorithm (ie quite far from an exact LRU). Redis tracks memory allocations and knows when it has to free some memory.

Key eviction | Docs - Redis

The Redis LRU algorithm uses an approximation of the least recently used keys rather than calculating them exactly. It samples a small number of keys at random ...

I don't know why people use redis as an LRU cache. Its a terrible ...

Its a terrible LRU cache. Its eviction algorithm isn't true LRU and does sampling which may cause new keys to get incorrectly convicted. LRU is also really slow ...

Redis Eviction Policies - Deep Notes

Object TTL (TIME TO LIVE) can be more important than its eviction policy. Despite it's importance, there are no good proven algorithms for ...

Random notes on improving the Redis LRU algorithm - antirez

LRU in Redis: the genesis === Initially Redis had no support for LRU eviction. It was added later, when memory efficiency was a big concern.

[NEW] Proposal for deterministic LRU in Redis · Issue #8947 - GitHub

Redis today supports an implementation of non-deterministic LRU for key evictions when the total memory usage goes above maxmemory.

How to make Redis choose LRU eviction policy for only some of the ...

Actually, volatile-lru is the default policy, so all you have to do is to make sure TTL is set for the keys you are willing to lose when memory ...

If Redis LFU mode improved LRU then why they kept ... - Hacker News

There is no absolutely "better" algorithm in caching. Depends on the usage pattern of the user. We believe LRU is very simple, predictable and works well ...

[redis] dive into LRU in redis. Principles of Standard LRU… - Medium

LRU, Least Recently Used, is a classic caching algorithm. LRU maintains a linked list to track the access pattern of each data item in the cache.

Understanding how Redis eviction policies work - Codemancers

Redis can be used as an LRU cache with right kind of eviction policy. We can have some fun figuring out how this actually works.

Setting A Data Eviction Policy - Session Store : r/redis - Reddit

I'd probably go with volatile-lru as older sessions represent users who haven't shown up in a while and probably won't notice if their session ...

Cache Eviction Strategies Every Redis Developer Should Know

Similarly, LRU cache eviction policy evicts the least recently accessed cache entries first, based on the assumption that items not recently ...

Unexpected evictions with LRU policy #2647 - redis/redis - GitHub

In that mode it allows a new entry into the cache and delays the filtering until it no longer has a high recency. The regions can use any ...

Lru cache - Redis Documentation - Read the Docs

Redis LRU algorithm is not an exact implementation. This means that Redis is not able to pick the best candidate for eviction, that is, the access that was ...

Using Redis as an LRU cache - GitHub Pages

When Redis is used as a cache, sometimes it is handy to let it automatically evict old data as you add new one. This behavior is very well known in the ...

Dynamically Configuring LRU Replacement Policy in Redis

For any set request, if the key is new for Redis, it conducts a ... As discussed in Section 1, K = 16 and K = 1 represent real. LRU and random ...

Eviction policy | Docs - Redis

volatile-lru is the default eviction policy for most databases. ... If there is no communication between participating clusters, it can result in eviction ...

Question: Why is there no eviction policy in Redis and how can it be ...

This command sets the eviction policy to allkeys-lru , meaning that Redis will evict the least recently used keys when the max memory limit is hit. Make sure to ...

Redis Notes - Cache modes and Memory management

If you think at LRU, an item that was recently accessed but is actually almost never requested, will not get expired, so the risk is to evict a ...