From Fedora Project Wiki
Line 1: Line 1:
 
* '''[https://symas.com/products/lightning-memory-mapped-database/ LMDB]'''
 
* '''[https://symas.com/products/lightning-memory-mapped-database/ LMDB]'''
 +
** '''Written in:''' C
 +
** '''Wrappers for:''' C++, Java, Python, Perl, Ruby, Go, Erlang, PHP, Lua
 +
** '''Packages available for:''' Fedora 23+, EPEL6+
 
** '''Search key length:'''
 
** '''Search key length:'''
 
** '''Read-only access to DB:'''
 
** '''Read-only access to DB:'''
Line 6: Line 9:
  
 
* '''[http://leveldb.org/ LevelDB]'''
 
* '''[http://leveldb.org/ LevelDB]'''
 +
** '''Written in:'''
 +
** '''Wrappers for:'''
 +
** '''Packages available for:'''
 
** '''Search key length:'''
 
** '''Search key length:'''
 
** '''Read-only access to DB:'''
 
** '''Read-only access to DB:'''
Line 12: Line 18:
  
 
* '''[http://rocksdb.org/ RocksDB]'''
 
* '''[http://rocksdb.org/ RocksDB]'''
 +
** '''Written in:'''
 +
** '''Wrappers for:'''
 +
** '''Packages available for:'''
 
** '''Search key length:'''
 
** '''Search key length:'''
 
** '''Read-only access to DB:'''
 
** '''Read-only access to DB:'''
Line 18: Line 27:
  
 
* '''[http://fallabs.com/kyotocabinet/ Kyoto Cabinet]''' (replacing Tokyo Cabinet)
 
* '''[http://fallabs.com/kyotocabinet/ Kyoto Cabinet]''' (replacing Tokyo Cabinet)
 +
** '''Written in:''' C++
 +
** '''Wrappers for:''' C, Java, Python, Ruby, Perl, and Lua
 +
** '''Packages available for:''' Fedora 23+, EPEL5+
 
** '''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).
 
** '''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).
 
** '''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).
Line 24: Line 36:
  
 
* '''[http://unqlite.org/ UnQlite]'''
 
* '''[http://unqlite.org/ UnQlite]'''
 +
** '''Written in:'''
 +
** '''Wrappers for:'''
 +
** '''Packages available for:'''
 
** '''Search key length:'''
 
** '''Search key length:'''
 
** '''Read-only access to DB:'''
 
** '''Read-only access to DB:'''
Line 33: Line 48:
  
 
* '''[http://fallabs.com/tokyocabinet/ TokyoCabinet]''' (replacing QDBM)
 
* '''[http://fallabs.com/tokyocabinet/ TokyoCabinet]''' (replacing QDBM)
 +
** '''Written in:''' C
 +
** '''Wrappers for:''' Perl, Ruby, Java, and Lua
 +
** '''Packages available for:''' Fedora 23+, EPEL5+, RHEL6+
 
** '''Search key length:'''
 
** '''Search key length:'''
 
** '''Read-only access to DB:'''
 
** '''Read-only access to DB:'''
Line 39: Line 57:
  
 
* '''[http://fallabs.com/qdbm/spex.html QDBM]'''
 
* '''[http://fallabs.com/qdbm/spex.html QDBM]'''
 +
** '''Written in:''' C
 +
** '''Wrappers for:''' C++, Java, Perl, and Ruby
 +
** '''Packages available for:''' Fedora 23+
 
** '''Search key length:'''
 
** '''Search key length:'''
 
** '''Read-only access to DB:'''
 
** '''Read-only access to DB:'''
Line 45: Line 66:
  
 
* '''NDBM'''
 
* '''NDBM'''
 +
** '''Written in:'''
 +
** '''Wrappers for:'''
 +
** '''Packages available for:'''
 
** '''Search key length:'''
 
** '''Search key length:'''
 
** '''Read-only access to DB:'''
 
** '''Read-only access to DB:'''
Line 51: Line 75:
  
 
* '''GDBM'''
 
* '''GDBM'''
 +
** '''Written in:'''
 +
** '''Wrappers for:'''
 +
** '''Packages available for:'''
 
** '''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 08:22, 27 July 2016

  • LMDB
    • Written in: C
    • Wrappers for: C++, Java, Python, Perl, Ruby, Go, Erlang, PHP, Lua
    • Packages available for: Fedora 23+, EPEL6+
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
  • LevelDB
    • Written in:
    • Wrappers for:
    • Packages available for:
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
  • RocksDB
    • Written in:
    • Wrappers for:
    • Packages available for:
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
  • Kyoto Cabinet (replacing Tokyo Cabinet)
    • Written in: C++
    • Wrappers for: C, Java, Python, Ruby, Perl, and Lua
    • Packages available for: Fedora 23+, EPEL5+
    • 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
    • Written in:
    • Wrappers for:
    • Packages available for:
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:

Older (possibly unmantained) projects

  • TokyoCabinet (replacing QDBM)
    • Written in: C
    • Wrappers for: Perl, Ruby, Java, and Lua
    • Packages available for: Fedora 23+, EPEL5+, RHEL6+
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
  • QDBM
    • Written in: C
    • Wrappers for: C++, Java, Perl, and Ruby
    • Packages available for: Fedora 23+
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
  • NDBM
    • Written in:
    • Wrappers for:
    • Packages available for:
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X:
  • GDBM
    • Written in:
    • Wrappers for:
    • Packages available for:
    • Search key length:
    • Read-only access to DB:
    • Supported architectures:
    • Query keys larger than X: