🔴Redis vs Memcached💾
Memcached is a simple, fast in-memory cache for strings. Redis is a richer in-memory data store with structures, persistence, pub/sub and far more capability.
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🔴Redis
- ✓Rich data structures: lists, sets, sorted sets, hashes
- ✓Optional persistence and replication
- ✓Pub/sub, streams and built-in scripting
- ✓Versatile beyond plain caching
💾Memcached
- ✓Extremely simple and lightweight
- ✓Excellent multithreaded performance for caching
- ✓Very low memory overhead per item
- ✓Easy to scale horizontally for pure caching
Verdict
Redis wins for almost any use case beyond plain caching thanks to its rich features. Memcached wins as a lean, multithreaded cache when you only need simple key-value speed.
Frequently asked
Is Redis faster than Memcached?+
Both are very fast; Memcached's multithreading can help pure caching, Redis offers far more features.
Does Memcached persist data?+
No, Memcached is purely in-memory; Redis can optionally persist to disk.
Which should I use for caching?+
Either works; Redis is the safer all-rounder, Memcached suits simple high-throughput caching.
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