Elastic Gives ElasticSearch a Graph Query Engine — Elastic has announced that it’s added a graph query engine to Elasticsearch, so users now have the option of using their search indexes as the basis for conducting graph analyses.

Caravel: Airbnb’s Data Exploration Platform — A data exploration platform designed to be visual, intuitive and interactive. The video and screenshots are very appealing. Caravel allows visualization-based exploration of data while performing fast “slicing and dicing” against any dataset.

How Neo4j Saved my Relationship — A look at the power of graph databases in taming complex data problems.

Get more from Redis: Autoscaling and Performance Dashboard from RedisGreen — Ever wonder what your Redis server was actually doing? Find out with RedisGreen's dashboard and monitoring tools.

Citus Unforks From PostgreSQL, Goes Open Source — Citus Data has released Citus 5.0 which comes along with two major announcements. The first is it’s entirely an extension, making it the first distributed databased to not fork Postgres but use native extension APIs. The second, it’s now open source.

SQL: How to Create An Execution Plan — When you’re trying to get SQL to run faster, there’s one thing that’s vital: an execution plan. In this post Chris Saxon investigates how to create yours.

What is Blockchain? — A primer for people just starting to wrap their heads around blockchain, a type of distributed database that maintains an expanding ledger of data and records.

Analyzing A Billion Taxi Rides in PostgreSQL — We covered when Mark analyzed a billion rides in Redshift, now here’s the same but using Postgres and cstore, the columnar storage FDW from Citus Data