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Not to be confused with "COM Structured Storage.

Structured storage is "computer storage for "structured data, often in the form of a "distributed database.[1] "Computer software formally known as structured storage systems include "Apache Cassandra,[2] "Google's "BigTable[3] and "Apache HBase.[4]


The following is a comparison of notable structured storage systems.

Project Name Type "Persistence "Replication "High Availability "Transactions Rack-locality Awareness "Implementation Language Influences, "Sponsors "License
"Aerospike database "NoSQL database Yes, Hybrid DRAM and flash for persistence Yes Yes, Distributed for scale Yes Yes C (small bits of assembly language) Aerospike "AGPL v3
"AllegroGraph "Graph database Yes No - v5, 2010 Yes Yes No "Common Lisp Franz Inc. "Proprietary
Apache Geode Key-value Yes Yes Yes Yes Unknown "Java "Apache, "Pivotal Software "Apache 2.0
Apache Ignite Key-value To and from an underlying persistent storage (e.g. an "RDBMS) Yes Yes Yes Yes "Java "Apache, "GridGain Systems "Apache 2.0
"Apache Jackrabbit Key-value & Hierarchical & Document Yes Yes Yes Yes likely "Java "Apache, "Roy Fielding, "Day Software "Apache 2.0
"Berkeley DB/"Dbm/Ndbm (bdb)1.x Key-value Yes No No No No "C old school Various
"Berkeley DB Sleepycat/Oracle Berkeley DB 5.x Key-value Yes Yes Yes Yes No C, "C++, or Java dbm, Sleepycat/Oracle dual GPL-like Sleepycat License
"Oracle NoSQL Database Key-value Yes Yes Yes Yes No Java Oracle "AGPLv3 License or proprietary
"Apache Cassandra Key-value Yes Yes Distributed Partial Only supports CAS (Check And Set) after 2.1.1 and later[5][6] Yes Java Dynamo and "BigTable, Facebook/Digg/Rackspace "Apache 2.0
"ClustrixDB scale-out relational Yes Yes Distributed and Replication Yes No C Clustrix Proprietary
"Coherence Key-value Persistent data typically in an "RDBMS Yes Yes Yes Yes "Java "Oracle (previously Tangosol) "Proprietary
"Couchbase Document Yes Yes Yes Yes, with two-phase commits[7] Yes "C++, "Erlang, "C,[8] "Go "CouchDB, "Memcached "Apache 2.0
"CouchDB Document Yes Yes replication + load balancing Atomicity is per document, per CouchDB instance[9] No "Erlang Lotus Notes / Ubuntu, Mozilla, IBM "Apache 2.0
"Extensible Storage Engine(ESE/NT) Document or Key-value Yes No No Yes No C++, Assembly "Microsoft "Proprietary
"FoundationDB Ordered Key-value Yes Yes Yes Yes Depends on user configuration C++ FoundationDB "Proprietary
GigaSpaces Tuple Space & Relational & Document & key-value Yes Yes Yes Yes Depends on user configuration "Java "Tuple space "Proprietary
"GT.M Key-value Yes Yes Yes Yes Depends on user configuration C (small bits of assembly language) FIS "AGPL v3
Project Name Type Persistence Replication High Availability Transactions Rack-locality Awareness Implementation Language Influences, Sponsors License
"Apache HBase Key-value Yes. Major version upgrades require re-import. Yes "HDFS,[10] "Amazon S3[11] or "Amazon Elastic Block Store.[12] Yes[13] Yes[14] See HDFS, S3 or EBS. Java "BigTable "Apache 2.0
"Hypertable Key-value Yes Yes, with KosmosFS and Ceph coming in 2.0 coming Yes, with KosmosFS C++ "BigTable "GPL 2.0
"Information Management System IBM IMS aka DB1 Key-value. Multi-level Yes Yes Yes, with HALDB Yes, with IMS TM Unknown "Assembler IBM since 1966 "Proprietary
"Infinispan Key-value Yes Yes Yes Yes Yes Java Red Hat "Apache 2.0
"Memcached Key-value No No No Partial Only supports CAS (Check And Set - or Compare And Swap)[15][16] No C Six Apart/Couchbase/Fotolog/Facebook BSD-like permissive copyright by Danga
"LevelDB Key-value, "Bigtable Yes No No Partial Multiple writes can be combined into single operation No C++ Google New BSD License
"LightningDB Key-value, memory-mapped files Yes No No Yes, ACID, MVCC No C Symas OpenLDAP Public License
"MongoDB Document (JSON) Yes Yes fail-over Partial Single document atomicity[17] No C++ 10gen "GNU AGPL v3.0
"Neo4j "Graph database Yes Yes Yes Yes No Java Neo Technology "GNU GPL v3.0
"OrientDB Multi-Model (Graph-Document-Object-Key/Value) Yes Yes[18] Yes[19] Yes[20] Yes Java Orient Technologies "Apache 2.0
"Redis Key-value Yes. But last few queries can be lost.[21] Yes Yes[22] Yes[23] No Ansi-C VMWare, Memcache "BSD
"SimpleDB (Amazon.com) Document & Key-value Yes Yes (automatic) Yes Unknown likely Erlang Amazon.com Amazon internal only
"Tarantool Free-dimensional tuples with primary and secondary keys Yes. (Asynchronous) Yes Yes Yes No Objective C, Lua Memcached, Mnesia, MySQL, "Mail.ru "BSD
upscaledb (previously Hamster DB) Transactional key-value store Yes Yes, ACID C++ "Apache 2.0
Project Name Type Persistence Replication High Availability Transactions Rack-locality Awareness Implementation Language Influences, Sponsors License

See also[edit]


  1. ^ Hamilton, James (3 November 2009). "Perspectives: One Size Does Not Fit All". Retrieved 13 November 2009. 
  2. ^ Lakshman, Avinash; Malik, Prashant. "Cassandra - A Decentralized Structured Storage System" (PDF). Cornell University. Retrieved 13 November 2009. 
  3. ^ Chang, Fay; Jeffrey Dean; Sanjay Ghemawat; Wilson C. Hsieh; Deborah A. Wallach; Mike Burrows; Tushar Chandra; Andrew Fikes; Robert E. Gruber. "Bigtable: A Distributed Storage System for Structured Data" (PDF). Google. Retrieved 13 November 2009. 
  4. ^ Kellerman, Jim. "HBase: structured storage of sparse data for Hadoop" (PDF). Retrieved 20 February 2016. 
  5. ^ java - Cassandra - transaction support - Stack Overflow
  6. ^ Lightweight transactions
  7. ^ Providing transactional logic
  8. ^ Damien Katz (January 8, 2013). "The Unreasonable Effectiveness of C". Retrieved September 30, 2016. 
  9. ^ How do I use transactions with CouchDB?
  10. ^ HBase: Bigtable-like structured storage for Hadoop HDFS
  11. ^ HBase on EC2
  12. ^ HBase on EC2 using EBS volumes : Lessons Learned | My AWS Musings
  13. ^ Hbase/MultipleMasters - Hadoop Wiki
  14. ^ ACID in HBase
  15. ^ sql - Memcache with transactions? - Stack Overflow
  16. ^ Memcached
  17. ^ Atomic Operations - MongoDB
  18. ^ OrientDB Replication
  19. ^ OrientDB Distributed Architecture Lifecycle
  20. ^ OrientDB Transactions
  21. ^ Redis Persistence
  22. ^ high availability - Redis master/slave replication - single point of failure? - Stack Overflow
  23. ^ Transactions – Redis
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