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Graph Database for everyday use

Project description

This program is alpha becarful

Kesako?!

Ajgu is graph database backed by Oracle Berkeley Database key/value store aka. bsddb. It’s meant to be an easy to use, just works persistent graph for people that want to experiment with graph databases. SQLite for graphs.

Development happens @ https://git.framasoft.org/python-graphiti-love-story/AjguGraphDB

ChangeLog

15.16.25

  • Major fix in NoTxnBSDDB3. Now it’s really a ACID less (transaction-less) backend.

15.16.25

  • add syncless transaction with sync=False in BSDDB3 storage
  • add movielens latest small load script
  • improve http frontend and move it inside ajgu code
  • add documentation in docs directory using mkdocs

15.06.21

  • ajgu: storage: Add File based backend
  • ajgu: storage: Add Transaction less bsddb3 backend
  • examples: Add conceptnet load script
  • examples: Add mini microblog app

15.06.15

Important changes:

  • Several API changes
  • Transaction support was fully broken, please upgrade if you require transactions.

Details:

  • move to unittest.TestCase
  • use uuid4 for identifier generation
  • move Element, Vertex and Edge class to elements.py module
  • rework to implement Storage based backend to make future work on multiple backends easier
  • rework Element.properties() now it’s Element.properties and Element.props with new API (with tests)
  • implement Transaction.edge & Transaction.vertex API via manager classes (cf. manager.py). Same API as before but element specific. Now you create a vertex with txn.vertex.create('software'), and retrieve an edge with txn.edge.get(ajgu_depends_bsddb).
  • add txn.*.slice
  • index elements by labels to speed up txn.*.label queries.
  • several cleanups, removed old index/query code (uzelmumu module still works)
  • fix pypi example to work with new API

15.06.10

  • add example app
  • better error when magic keys is used but fails
  • fix bug where edge and vertex weren’t not saved
  • fix import error in tests

Getting started

Dependencies:

  • python3
  • bsddb3
  • msgpack

bsddb3 must be installed on you system. Dependending on the distribution it’s called db or bdb. If you have a python3-bsddb3 package use that one.

You can use python setup.py develop or pip install ajgu but you will need python 3 and bsddb headers.

Contact

Feel free to contact me at amirouche+dev@hypermove.net if you need suppport or want to discuss matters related to graph databases.

FAQ

  1. What ajgu means?

    ajgu is a beam used in house construction in amazigh language.

  2. Why not use SQLite instead of bsddb3?

    People say sqlite and relationnal database are not meant to store graph data. I believe them. Also key/value stores offer the necessary flexibility to store many kinds of data.

  3. Where can I find a graph server with multi *thread* and *python querying*?

    GraphitiDB I never used it for the real. It’s relying on old version of Tinkerpop.

  4. Are GraphDBs useful beyond prototyping?

    You tell me!

  5. GraphDBs are awesome, where can I learn more?

Project details


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