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Graph Database written in Python using wiredtiger with Gremlin querying

AjguDB

This program is alpha becarful

  • graphdb
  • schemaless
  • single thread
  • transaction-less
  • GPLv2 or GPLv3

AjguDB wants to be a fast enough python graph database for exploring connected data.

Dependencies

ChangeLog

0.7.1

  • small typofix in README…

0.7

  • storage: only wiredtiger 2.6.1 backend storage is supported
  • ajgudb: you can threat AjguDB as simple key/value store via its methods AjguDB.get(key) , AjguDB.set(key, value) and AjguDB.remove(key)
  • rewrite gremlin querying
  • gremlin: select is renamed where because it match the SQL terminology. SQL’s FROM is vertices and edges steps.
  • storage: rework the backend to use less write and similar read operations count.
  • storage: Now edges and vertices are stored in different tables this might also lead to performance improvement during querying.
  • storage: elements identifiers are now computed by the backend storage, wiredtiger.
  • add fuzzy search

0.5

  • ajgudb
    • add bsddb backend
    • add wiredtiger backend
    • leveldb: increase block size to 1GB
  • gremlin:
    • add keys to retrieve several keys at the same time
    • use lazy itertools.imap instead of the gready python2’s map

0.4.2

  • ajgudb:
    • add a shortcut method AjguDB.one(**kwargs) to query for one element.
  • gremlin:
    • fix group_count , now it’s a step and not a final step
    • fix each to return GremlinResult so that history is not lost and back can be used
    • add scatter , it’s only useful after group_count so far.

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