This week I had fun with the online meetup on similarity algorithms with Tomaz Bratanic. I came across a great post written by Adrien Sales showing how to analyse PostgreSQL metadata using Neo4j and learned a neat approach to ingesting data into Neo4j using Kafka Streams and GraphQL.

1. This Week in Neo4j
24th November 2018

2. Mark Needham
Developer Relations Engineer at Neo4j
mark.needham@neo4j.com / devrel@neo4j.com
@markhneedham
2

3. The week's graph database news
in one handy slide deck!
Find the archive at
neo4j.com/tag/twin4j

4. Featured community member: Pat Patterson
Learn more about Pat

5. This week on the online meetup, Tomaz Bratanic showed
us how to use the similarity algorithms recently added to
the Neo4j Graph Algorithms library.
Neo4j Similarity Algorithms and How to Use Them
Watch the video

6. I enjoyed a blog post written by Lucas Jellema in which he
builds session recommendation engine for conferences like
the recent Oracle CodeOne conference. Lucas shows how
to build such a system using both relational
and graph approaches, and compares and
contrasts the resulting SQL and Cypher
queries.
Building a Code One Session Recommendation Engine
using Neo4j
Read the blog post

7. Naren Chowdary wrote a blog post showing how to use
GraphQL as an ingestion layer for importing data into
Neo4j. Naren builds a data pipeline that load an airlines
and airports dataset into Kafka Streams, which is then
consumed by a Spring Boot
powered consumer that sends the
data to Neo4j via the GraphQL plugin.
Read the blog post
GraphQL Based Neo4J Ingestion

8. In part 4 of Max De Marzi’s series of blog posts about
decision trees he shows how to build a decision stream. A
decision stream is similar to a decision tree, but it allows
nodes to follow a path based on multiple options and may
go down more than 1 level.
Dynamic Rule Based Decision Trees: Decision
Streams
Read the blog post

9. Adrien Sales wrote a really cool blog post in which he
shows how to use the graph to analyse the metadata of a
PostgreSQL database. Adrien imports system data from
PostgreSQL using APOC’s LOAD JDBC procedure, before
showing how to write Cypher queries
to explore triggers, database objects,
and more.
Analysing PostgreSQL metadata using Neo4j
Read the blog post

10. If you liked this check
out the blog post
This Week in Neo4j - 24th November 2018