Memcached

Memcached is a high-performance, distributed memory object caching system. It is simpler than Redis. It does arguably one thing: Key-Value caching of strings/objects in RAM.

When to Use

• High-Throughput In-Memory Key-Value Caching: Caching database query results, HTML fragments, and session tokens with sub-millisecond latency.
• Pure Ephemeral Caching: Storing disposable data where eviction under memory pressure is acceptable (LRU eviction).
• Multi-Threaded Multi-Core Scalability: Maximizing cache operations on large multi-core servers using Memcached's native multi-threaded architecture.
• Simple Key-Value Lookups: Caching simple string and serialized objects where advanced data structures (Redis sets/hashes) are unnecessary.

Quick Start

# Telnet interface
set mykey 0 60 4
data
STORED