About Droonga

Droonga is a scalable data processing engine, based on a stream oriented processing model. In many operations (searching, updating, grouping, and so on), Droonga processes various data by pipeline. As the result, Droonga has large potential around its flexibility and extensibility. Moreover, those features provide high availability for people who develop any data processing engine based on Droonga. You can process complex operations by mixing operations, and you can add custom operations to Droonga via plugins written as Ruby-scripts.

Are you interested in Droonga? See overview for more details, and try the tutorial. You’ll understand how Droonga works with these documentations.

About this release

The current Droonga version is 1.0.1.

The release has the following improvements:

• Fluent-plugin-droonga 1.0.1
  • More documents around plugin APIs are now available. See the plugin development tutorial and the plugin API reference.
  • Some documented features of the catalog.json are actually implemented. For example:
    • A new vectorOptions option for a schema.
    • New options fact, dimension, nWorkers and so on. For more details, see the reference of the catalog.json.
  • Connections to other Droonga Engine nodes are automatically re-established correctly.
  • Some improvements about the search command
    • The column name _nsubrecs is available as a source with groupBy and sortBy.
    • The element elapsedTime is now available for a value of elements.
    • A new parameter adjusters is introduced. (Not documented yet, so see also Groonga’s document)
    • groupBy becomes faster.
  • And some small bugfixes.
• Express-droonga 1.0.1
  • The bundled HTTP server application is removed. Instead, use another project droonga-http-server.
  • Parallel connections from the Droonga Engine are established correctly.
  • A middleware for response caches is available now. You can see the statistics via /cache/statistics.
  • Query parameters attributes, group_by, and adjusters are available for a REST search command (via /tables/:tableName).
• Droonga-http-server 1.0.3
  • This is an npm package, a frontend for the express-droonga. You don’t have to write your application.js and package.json for general purpose - you just have to install this package and run the droonga-http-server command with options, to start an HTTP protocol adapter on your machine. See also the basic tutorial and the reference manual.

And, related projects are also released:

• Droonga-client-ruby 0.1.5
  • A new command droonga-send is available just for sending requests and ignoring responses.
  • Output results correctly event if there are multiple threads.
• Drntest 1.1.3
  • Supported merging custom catalog.json for each test.
  • Saved actual results on “not checked” cases.
  • Supported a new omit directive.
  • Supported a new require-catalog-version directive.

Conclusion

• Droonga 1.0.1 has been released!
• More documents around plugin APIs are available.
• More features of catalog.json are actually implemented.
• A new npm package droonga-http-server is available as an HTTP protocol adapter frontend. You don’t have to write your application.js and package.json anymore.
• A new droonga-send command is added to droonga-client-ruby.
• Drntest now supports custom catalog.json for each test, and there are more improvements.
• Droonga project will release a new version every month!

Droonga project welcomes you to join us as a user and/or a developer! See community to contact us!