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Memcached

Free#4 of 27 in Caching Software

Memcached: A free, self-hosted cache for reducing database, API, and page-rendering load. Ranked #4 of 27 in Caching Software by our editors (9.0/10); pricing: Free plan; best for mature, lightweight self-hosted object caching.

9.0/10Editor score

Visit Memcached

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At a glance

Editor score
9.0 / 10
Pricing
Free plan
Best for
Mature, lightweight self-hosted object caching
Free plan
Yes
Paid from
Free
Deployment
Self_hosted
Founded
2003
Facts checked
21 Sep 2026

Where it wins
- Free and open source with Linux, macOS, API, and self-hosted support
- Distributed client-side selection with LRU eviction and item expiration
- Meta protocol adds anti-stampede and stale-serving mechanisms
Where it doesn't
- Core servers do not replicate cached data
- Requires client integration and self-hosted administration
- Advanced routing depends on the optional built-in proxy

Our verdict on Memcached

Memcached is a free, open-source distributed memory object caching system for applications that need to reduce load from database calls, API calls, or page rendering. It stores small arbitrary values in an in-memory key-value store, with applications connecting through text, Meta Text, or binary protocols. The deployment model is self-hosted, with support for Linux, macOS, APIs, and other self-managed environments.

Its strongest technical case is breadth within object caching. Memcached provides distributed client-side server selection, LRU eviction, item expiration, cache invalidation, and commands for compare-and-swap, storage, retrieval, deletion, and statistics. The Meta protocol adds anti-stampede and stale-serving mechanisms, while an optional built-in proxy can route requests across backend pools. Warm restart, persistent-memory support, and optional flash-backed external storage extend how cached data can be handled beyond a purely volatile setup.

Memcached suits teams that want a focused, protocol-driven cache under their own operational control. The core servers are independent and do not replicate data, so applications that require replicated cache contents should choose a different architecture or alternative product. Fault-tolerance capability applies to the optional built-in proxy, and warm restart requires a clean shutdown. Choose Memcached for mature self-hosted object caching with flexible protocols and eviction behavior; avoid it when a broad managed ecosystem or built-in replication is central to the requirement.

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Memcached pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on memcached.org

Memcached fact sheet

Free plan	Yes
Paid from	Free
Deployment	Self_hosted
Cache targets	database-call results, API-call results, page-rendering results
Edge caching	Not verified
Data persistence	Yes
High availability	Yes
Supported cache engines	Text protocol, Meta Text protocol, Binary protocol, SASL authentication
Deployment	Self-hosted
Platforms	Linux, macOS
Support	Community, Docs
Built for	Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Free plan
Website	memcached.org
Facts checked	21 Sep 2026

Alternatives to Memcached

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Memcached vs the competition

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Featured on iTechGuides

Memcached is listed in our Caching Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update