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TL;DR - Memcached
- Memcached is a free, open-source, high-performance, distributed memory object caching system.
- It functions as an in-memory key-value store for small data chunks, primarily to speed up dynamic web applications by reducing database load.
- Memcached allows applications to utilize a shared virtual pool of memory across multiple servers, improving cache efficiency and scalability.
Pricing: open_source
Best for: Enterprises & pros
Pros & Cons
Pros
- Extremely fast
- Simple to use
- Battle-tested at scale
- Low memory overhead
Cons
- No persistence
- No built-in replication
- Limited data structures
Key Features
In-memory cachingDistributed architectureSimple key-value storageMulti-threaded performanceBinary and text protocol
Pricing Plans
Open Source
Free
- BSD licensed
- High-performance caching
- Multi-threaded architecture
- Production ready
About Memcached
By Toolradar Team·
Memcached is a free, open-source, high-performance, distributed memory object caching system. It speeds up dynamic web applications by alleviating database load through caching data and objects in RAM.
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Memcached FAQ
How does Memcached address the issue of cache consistency across multiple web servers?
Memcached allows all servers to access a single virtual pool of memory. This ensures that a given data item is consistently stored and retrieved from the same location across the entire web cluster, simplifying cache management.
What is the primary benefit of using Memcached in a distributed web application environment compared to independent node caching?
In a distributed environment, Memcached enables a significantly larger usable cache size by pooling memory from all nodes. This contrasts with independent node caching, where the total cache size is limited to the sum of individual node caches, which can be wasteful.
Can Memcached be deployed on dedicated machines, or is it restricted to using memory from existing web servers?
Memcached is flexible in its deployment. While it can utilize memory from web servers, many users opt for dedicated machines specifically configured to function as Memcached servers.
What kind of data can be stored in Memcached?
Memcached is an in-memory key-value store designed for small chunks of arbitrary data. This includes strings, objects, and results from database calls, API calls, or page rendering.
When was Memcached originally developed and for what purpose?
Memcached was originally developed by Brad Fitzpatrick for LiveJournal in 2003. Its initial purpose was to speed up dynamic web applications by alleviating database load.
Source: memcached.org