MemcacheDB (pronunciation: mem-cash-dee-bee) is a persistence enabled variant of
memcached
Memcached (pronounced variously /mɛmkæʃˈdiː/ ''mem-cash-dee'' or /ˈmɛmkæʃt/ ''mem-cashed'') is a general-purpose distributed memory-caching system. It is often used to speed up dynamic database-driven websites by caching data and object ...
. MemcacheDB has not been actively maintained since 2009. It is a general-purpose distributed memory caching system often used to speed up dynamic
database
In computing, a database is an organized collection of data or a type of data store based on the use of a database management system (DBMS), the software that interacts with end users, applications, and the database itself to capture and a ...
-driven websites by caching data and
objects
Object may refer to:
General meanings
* Object (philosophy), a thing, being, or concept
** Object (abstract), an object which does not exist at any particular time or place
** Physical object, an identifiable collection of matter
* Goal, an ai ...
in
memory
Memory is the faculty of the mind by which data or information is encoded, stored, and retrieved when needed. It is the retention of information over time for the purpose of influencing future action. If past events could not be remembe ...
. It was developed by Steve Chu and Howard Chu. The main difference between MemcacheDB and memcached is that MemcacheDB has its own key-value database system. based on
Berkeley DB
Berkeley DB (BDB) is an embedded database software library for key/value data, historically significant in open-source software. Berkeley DB is written in C with API bindings for many other programming languages. BDB stores arbitrary key/data ...
, so it is meant for persistent storage rather than limited to a non-persistent cache. A version of MemcacheDB using
Lightning Memory-Mapped Database
Lightning Memory-Mapped Database (LMDB) is an embedded transactional database in the form of a key-value store. LMDB is written in C (programming language), C with #API and uses, API bindings for several programming languages. LMDB stores arbitra ...
(LMDB) is also available, offering greater performance. MemcacheDB is accessed through the same protocol as memcached, so applications may use any memcached API as a means of accessing a MemcacheDB database.
MemcacheQ is a MemcacheDB variant that provides a simple
message queue
In computer science, message queues and mailboxes are software-engineering components typically used for inter-process communication (IPC), or for inter- thread communication within the same process. They use a queue for messaging – the ...
service.
Active development of MemcacheDB seems to have currently stopped; the web page hasn't been updated since 2009.
See also
*
Aerospike
*
Couchbase Server
Couchbase Server, originally known as Membase, is a source-available, distributed (shared-nothing architecture) multi-model NoSQL document-oriented database software package optimized for interactive applications. These applications may serve m ...
*
LMDB
*
Memcached
Memcached (pronounced variously /mɛmkæʃˈdiː/ ''mem-cash-dee'' or /ˈmɛmkæʃt/ ''mem-cashed'') is a general-purpose distributed memory-caching system. It is often used to speed up dynamic database-driven websites by caching data and object ...
*
Hazelcast
In computing, Hazelcast is a unified real-time data platform implemented in Java that combines a fast data store with stream processing. It is also the name of the company that develops the product. The Hazelcast company is funded by venture ca ...
*
Redis
Redis (; Remote Dictionary Server) is an in-memory key–value database, used as a distributed cache and message broker, with optional durability. Because it holds all data in memory and because of its design, Redis offers low- latency reads ...
*
Tarantool
Tarantool is an in-memory computing platform with a flexible data schema, best used for creating high-performance applications. Two main parts of it are an in-memory database and a Lua application server.
Tarantool maintains data in memory and ...
References
{{Reflist
Cross-platform software
Structured storage
Free database management systems
Software using the BSD license
Free software programmed in C