This Week in Neo4j – NetSCAN community detection, Trending Activity Feeds Using GraphQL and Neo4j, Neo4j to Contentful in Elixir
4 min read
Welcome to this week in Neo4j where we round up what’s been happening in the world of opens in new tabgraph databases in the last 7 days.
This week we have the NetSCAN community detection algorithm, Neo4j to Contentful in Elixir, messaging features are added to the dating site, and we learn how to build trending activity feeds Using GraphQL and Neo4j.
I also want to give a special shout out to long time Neo4j community member opens in new tabChristophe Willemsen, who this week was promoted to Chief Technology Officer at our partner GraphAware. Congratulations Christophe!
Featured Community Member: Maxim Salnikov
This week’s featured community member is opens in new tabMaxim Salnikov, Full-Stack Engineer at ForgeRock.
Maxim Salnikov – This Week’s Featured Community Member
Maxim has been using Neo4j as part of some experiments building a relationship-based digital opens in new tabidentify platform.
He is a opens in new tabprolific speaker on front-end web platforms, and has created two tools to make it easier for front-end developers to build Neo4j applications:
- opens in new tabangular-neo4j is a module that makes it easy to use the Neo4j Bolt driver for JavaScript from an Angular application.
- opens in new tabnode-red-contrib-neo4j-bolt is a Node-RED node with shareable server configuration that lets you run generic Cypher queries against a Neo4j server.
On behalf of the Neo4j community, thanks for all your work Maxim!
Building Trending Activity Feeds Using GraphQL And Neo4j
Last week we launched our new opens in new tabNeo4j forum, and you may have noticed that at the top of the home page there are links to content created by members of the community.
My colleague opens in new tabWill Lyon has written a blog post explaining how we built it using Neo4j, GraphQL (via the opens in new tabGRANDstack), the opens in new tabDiscourse API, and the opens in new tabcommunity graph.
The community generates more content than we could fit on the page, so Will goes into detail about a Cypher query he wrote that implements an exponential time decay function (similar to that used by Hacker News and Reddit) to work out which content to surface.
If you have a blog post or article that you’d like to see appear at the top of the home page don’t forget to post it in the opens in new tabCommunity Content & Blogs forum.
NetSCAN community detection, Contentful to Neo4j in Elixir, Neo4j Certification Tips
- opens in new tabVitor Horta opens in new tabwrote a blog post explaining the NetSCAN algorithm that he developed to detect communities in social networks and find influential people. The algorithm is available as a Neo4j procedure and can be called directly from Cypher.
- opens in new tabChris Eyre has ported his opens in new tabNeo4j to Contentful library from Node to Elixir, and opens in new tabexplains some of the challenges he encountered while doing this. Chris will be giving a talk and workshop about the library on opens in new tab5th September 2018 at the Neo4j London meetup.
- José RF Junior has opens in new tabwritten a blog post (it’s in Portuguese, but thank you Google Translate!), in which he shares his tips and tricks for taking and passing the opens in new tabNeo4j Certification exam.
- Vaibhav Shah has written a step by step guide explaining opens in new tabhow to install Neo4j on Ubuntu 14.04.
Dating Site: Adding messaging functionality
This week opens in new tabMax De Marzi added another three posts to his opens in new tabBuild a Dating site series.
In opens in new tabPart 10 Max adds messaging functionality and walks through different modeling choices that we could make when building such a feature into a graph model.
In opens in new tabPart 11 he implements the read side of this feature. Users now have a directory of all the conversations that they’ve been part of.
In opens in new tabPart 12 we learn how to add images to those messages.
Next Week
What’s happening next week in the world of graph databases?
| Date | Title | Group |
|---|---|---|
September 5th 2018 |
||
September 5th 2018 |
Tweet of the Week
My favourite tweet this week was by opens in new tabTim Strehle:
The @neo4j graph database helped me analyze data in ways I’d never even dreamed of, and I think it has the potential to replace SQL and NoSQL databases for a lot of applications.
— Tim Strehle (@tistre) August 29, 2018
Don’t forget to RT if you liked it too.
That’s all for this week. Have a great weekend!
Cheers, Mark
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