This document discusses building applications with DataStax Enterprise (DSE) using the Killr video catalog application as an example. It shows how to make video data searchable by adding tags to videos and storing them in a Cassandra table with the tag as the primary key. It then demonstrates how to use DSE Search to enable searching on video titles, descriptions, and other fields without adding other infrastructure components. The document highlights improvements to DSE Search in the upcoming 5.1 release, including upgrading Solr and allowing core management via CQL.

1. Building Killr Applications
with DataStax Enterprise
@LukeTillman
Technical Evangelist at DataStax

2. 2
Luke, Technical Evangelist Currently:
DataStax Enterprise
Cassandra
.NET
Node.js
Previously:
Web Applications
RDBMS

3. A reference application for users looking to learn how to use
Cassandra and DataStax Enterprise with their programming
language of choice.
https://killrvideo.github.io/

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The video catalog service
is essentially a product
catalog where videos are
our product. How do we
make it searchable?

5. A basic, Cassandra only solution
5

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When users add videos,
they add tags describing
the video's content. Tags
are just keywords that
describe the content.

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CREATE TABLE videos_by_tag (
tag text,
videoid uuid,
added_date timestamp,
userid uuid,
name text,
preview_image_location text,
tagged_date timestamp,
PRIMARY KEY (tag, videoid)
);
SELECT * FROM videos_by_tag
WHERE tag = 'cassandra';
What about searching for
keywords in the title or
description? Users expect
more from search.

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With DSE Search, we can
search on our Cassandra
data without complicating
things by introducing other
pieces infrastructure.

9. A comprehensive solution with DataStax Enterprise Search
9

10. <?xml version="1.0"?>
<schema name="videoSchema">
<types>
...
</types>
<fields>
...
</fields>
</schema>
DSE Search is based on
Solr, so you may be
expecting lots of manual
setup with ugly XML to
define the schema and
configuration.

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In reality, enabling basic
search functionality on a
table in DataStax Enterprise
is a simple command line
instruction.
SELECT * FROM videos
WHERE solr_query =
'description:cassandra';
> dsetool create_core killrvideo.videos generateResources=true

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You've also got all the
power of Solr for more
complex queries and can
customize those XML
resources for more
complicated features.
{ "q": "{!edismax qf='name^2 tags^1 description'} cassandra" }

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But wait, there’s more! DSE
5.1 (coming soon to a
download near you) has a
ton of Search
improvements.
Some key improvements in
DSE Search 5.1 include:
• Solr has been upgraded
from 4.10 to 6.0.1
• Core management can
be done using CQL
CREATE SEARCH INDEX ON killrvideo.videos;

14. https://killrvideo.github.io/
Questions?
@LukeTillman