Memcached is a distributed in-memory caching system commonly used to speed up web applications. It temporarily stores frequently requested data in RAM to avoid expensive database queries or API calls.
Key-Value Store: Data is stored as key-value pairs.
In-Memory: Runs entirely in RAM, making it extremely fast.
Distributed: Supports multiple servers (clusters) to distribute load.
Simple API: Provides basic operations like set, get, and delete.
Eviction Policy: Uses LRU (Least Recently Used) to remove old data when memory is full.
Caching Database Queries: Reduces load on databases like MySQL or PostgreSQL.
Session Management: Stores user sessions in scalable web applications.
Temporary Data Storage: Useful for API rate limiting or short-lived data caching.
Memcached: Faster for simple key-value caching, scales well horizontally.
Redis: Offers more features like persistence, lists, hashes, sets, and pub/sub messaging.
sudo apt update && sudo apt install memcached
sudo systemctl start memcachedIt can be used with PHP or Python via appropriate libraries.
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