The siddhi-store-cassandra extension is an extension to Siddhi that can be used to persist events to a Cassandra instance of the users choice. Find some useful links below:
Latest API Docs¶
Latest API Docs is 2.0.0.
- A Cassandra server instance should be started and available for connection via the DataStax Java API.
How to use¶
Using the extension in WSO2 Stream Processor
This extension is shipped out-of-the-box with WSO2 Stream Processor, if you wish to use an alternative version of this extension you can replace the component jar that can be found in the
When running the product make sure to insert the DataStax Java Driver For Apache Cassandra to
Using the extension as a java library
- This extension can be added as a maven dependency along with other Siddhi dependencies to your project.
<dependency> <groupId>org.wso2.extension.siddhi.store.cassandra</groupId> <artifactId>siddhi-store-cassandra</artifactId> <version>x.x.x</version> </dependency>
In case of using search, make sure to include the primary key of the data containing column. If the primary key is not declared by the user the performance of the Siddhi search query will be reduced.
In case of deleting data from the store, including primary key will increase the efficiency of the Siddhi query. Otherwise whole entire table will be searched and then found rows will be deleted, which will effect the performance of the query.
The same scenario applies in updating and update or insert operations.
Make sure to build a proper Cassandra cluster with configured hosts.
Jenkins Build Status¶
- cassandra (Store)
This extension assigns data sources and connection instructions to event tables. It also implements read-write operations on connected datasource.
How to Contribute¶
Please report issues at GitHub Issue Tracker.
Send your contributions as pull requests to master branch.
Siddhi developers can be contacted via the mailing lists:
Developers List : email@example.com
Architecture List : firstname.lastname@example.org
We are committed to ensuring support for this extension in production. Our unique approach ensures that all support leverages our open development methodology and is provided by the very same engineers who build the technology.
For more details and to take advantage of this unique opportunity contact us via http://wso2.com/support/.