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* '''[https://symas.com/products/lightning-memory-mapped-database/ LMDB]'''
** '''Search key length:'''
** '''Read-only access to DB:'''
** '''Supported architectures:'''
** '''Query keys larger than X:'''
* '''[http://leveldb.org/ LevelDB]'''
** '''Search key length:'''
** '''Read-only access to DB:'''
** '''Supported architectures:'''
** '''Query keys larger than X:'''
* '''[http://rocksdb.org/ RocksDB]'''
** '''Search key length:'''
** '''Read-only access to DB:'''
** '''Supported architectures:'''
** '''Query keys larger than X:'''
* '''[http://fallabs.com/kyotocabinet/ Kyoto Cabinet]''' (replacing Tokyo Cabinet)
* '''[http://fallabs.com/kyotocabinet/ Kyoto Cabinet]''' (replacing Tokyo Cabinet)
** '''Search key length:''' No limit from database itself (uses c++ std::string or combination of c-style string and its length).
** '''Search key length:''' No limit from database itself (uses c++ std::string or combination of c-style string and its length).
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** '''Supported architectures:''' Linux 2.6 and later (i386/x86-64/PowerPC/Alpha/SPARC)
** '''Supported architectures:''' Linux 2.6 and later (i386/x86-64/PowerPC/Alpha/SPARC)
** '''Query keys larger than X:''' DB supports [http://fallabs.com/kyotocabinet/api/classkyotocabinet_1_1PolyDB.html#a23cafa21e981567d1d3f82b437ebcd9d matching by regex], which should be possible to use for this kind of query. Other possibilities are [http://fallabs.com/kyotocabinet/api/classkyotocabinet_1_1PolyDB.html#ae1a3c5cf00e8b44d058e13bef372cc4f match by prefix] and [http://fallabs.com/kyotocabinet/api/classkyotocabinet_1_1PolyDB.html#af822c534ddc01b51a3b21ccd4bcdedea match by similarity].
** '''Query keys larger than X:''' DB supports [http://fallabs.com/kyotocabinet/api/classkyotocabinet_1_1PolyDB.html#a23cafa21e981567d1d3f82b437ebcd9d matching by regex], which should be possible to use for this kind of query. Other possibilities are [http://fallabs.com/kyotocabinet/api/classkyotocabinet_1_1PolyDB.html#ae1a3c5cf00e8b44d058e13bef372cc4f match by prefix] and [http://fallabs.com/kyotocabinet/api/classkyotocabinet_1_1PolyDB.html#af822c534ddc01b51a3b21ccd4bcdedea match by similarity].
* '''[http://unqlite.org/ UnQlite]'''
* '''[http://unqlite.org/ UnQlite]'''
** '''Search key length:'''
** '''Read-only access to DB:'''
** '''Supported architectures:'''
** '''Query keys larger than X:'''
== Older (possibly unmantained) projects ==
* '''[http://fallabs.com/tokyocabinet/ TokyoCabinet]''' (replacing QDBM)
** '''Search key length:'''
** '''Read-only access to DB:'''
** '''Supported architectures:'''
** '''Query keys larger than X:'''
* '''[http://fallabs.com/qdbm/spex.html QDBM]'''
** '''Search key length:'''
** '''Read-only access to DB:'''
** '''Supported architectures:'''
** '''Query keys larger than X:'''
* '''NDBM'''
** '''Search key length:'''
** '''Read-only access to DB:'''
** '''Supported architectures:'''
** '''Query keys larger than X:'''
* '''GDBM'''
** '''Search key length:'''
** '''Search key length:'''
** '''Read-only access to DB:'''
** '''Read-only access to DB:'''
** '''Supported architectures:'''
** '''Supported architectures:'''
** '''Query keys larger than X:'''
** '''Query keys larger than X:'''

Revision as of 08:05, 27 July 2016

  • LMDB
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
  • LevelDB
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
  • RocksDB
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
  • Kyoto Cabinet (replacing Tokyo Cabinet)
    • Search key length: No limit from database itself (uses c++ std::string or combination of c-style string and its length).
    • Read-only access to DB: See http://fallabs.com/kyotocabinet/spex.html, part Sharing One database by Multiple Processes. TL;DR: One DB cannot be accessed by multiple processes, DB file is protected by reader-writer lock (which means it will probably require write access even for read-only operation).
    • Supported architectures: Linux 2.6 and later (i386/x86-64/PowerPC/Alpha/SPARC)
    • Query keys larger than X: DB supports matching by regex, which should be possible to use for this kind of query. Other possibilities are match by prefix and match by similarity.
  • UnQlite
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:

Older (possibly unmantained) projects

  • TokyoCabinet (replacing QDBM)
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
  • QDBM
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
  • NDBM
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
  • GDBM
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
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