Distributed data store
This article is written like a personal reflection, personal essay, or argumentative essay that states a Wikipedia editor's personal feelings or presents an original argument about a topic. (May 2012) |
Computer memory and Computer data storage types |
---|
Volatile |
Non-volatile |
A distributed data store is a computer network where information is stored on more than one node, often in a replicated fashion.[1] It is usually specifically used to refer to either a distributed database where users store information on a number of nodes, or a computer network in which users store information on a number of peer network nodes.[2]
Distributed databases
andAs the ability of arbitrary querying is not as important as the availability, designers of distributed data stores have increased the latter at an expense of consistency. But the high-speed read/write access results in reduced consistency, as it is not possible to guarantee both consistency and availability on a partitioned network, as stated by the CAP theorem.
Peer network node data stores
In peer network data stores, the user can usually reciprocate and allow other users to use their computer as a storage node as well. Information may or may not be accessible to other users depending on the design of the network.
Most
where any node may be storing any part of the files on the network.Distributed data stores typically use an error detection and correction technique. Some distributed data stores (such as
Examples
Distributed non-relational databases
Product | License | High availability | Notes |
---|---|---|---|
Apache Accumulo | AL2
|
||
Aerospike | AGPL | ||
Apache Cassandra | AL2
|
Yes | formerly used by Facebook |
Apache Ignite | AL2
|
||
Bigtable | Proprietary | used by Google | |
Couchbase
|
AL2
|
used by LinkedIn, PayPal, and eBay | |
CrateDB | AL2
|
Yes | |
Apache Druid | AL2
|
used by Yahoo
| |
Dynamo | Proprietary | used by Amazon
| |
etcd | AL2
|
Yes | |
Hazelcast | AL2 , Proprietary
|
||
HBase
|
AL2
|
Yes | formerly used by Facebook |
Hypertable | GPL 2
|
Baidu | |
MongoDB | SSPL | ||
MySQL NDB Cluster | GPL 2
|
Yes | SQL and NoSQL APIs |
Riak | AL2
|
Yes | |
Redis | BSD License
|
Yes | |
ScyllaDB | AGPL | ||
Voldemort | AL2
|
used by LinkedIn |
Peer network node data stores
- BitTorrent
- Blockchain (database)
- Chord project
- Freenet
- GNUnet
- IPFS
- Mnet
- Napster
- NNTP (the distributed data storage protocol used for Usenet news)
- Unity, of the software Perfect Dark
- Share
- Siacoin
- DeNet
- Storage@home
- Tahoe-LAFS
- Winny
- ZeroNet
See also
- Cooperative storage cloud
- Data store
- schema
- Distributed hash table
- Distributed cache
- Cyber Resilience
References
- OL 25423189M
- ^ "Distributed Data Storage - an overview | ScienceDirect Topics".
- ^ "Bigtable: Google's Distributed Data Store". Paper Trail. Archived from the original on 2017-07-16. Retrieved 2011-04-05.
Although GFS provides Google with reliable, scalable distributed file storage, it does not provide any facility for structuring the data contained in the files beyond a hierarchical directory structure and meaningful file names. It's well known that more expressive solutions are required for large data sets. Google's terabytes upon terabytes of data that they retrieve from web crawlers, amongst many other sources, need organising, so that client applications can quickly perform lookups and updates at a finer granularity than the file level. [...] The very first thing you need to know about Bigtable is that it isn't a relational database. This should come as no surprise: one persistent theme through all of these large scale distributed data store papers is that RDBMSs are hard to do with good performance. There is no hard, fixed schema in a Bigtable, no referential integrity between tables (so no foreign keys) and therefore little support for optimised joins.
- ^ Sarah Pidcock (2011-01-31). "Dynamo: Amazon's Highly Available Key-value Store" (PDF). WATERLOO – CHERITON SCHOOL OF COMPUTER SCIENCE. p. 2/22. Retrieved 2011-04-05.
Dynamo: a highly available and scalable distributed data store
- ^ "Windows Azure Storage". Microsoft. 2011-09-16. Archived from the original on 9 November 2011. Retrieved 6 November 2011.