Oliver Roick

I build software that puts people on the map. I work at Cadasta Foundation. Most of my work is available on GitHub.


Data Storage and Indexing in DynamoDB

To power web-based applications, NoSQL databases can be a great and light-weight alternative to relational databases. The most significant difference to – say Postgres – is the way how data is stored, indexed and how it can be queried — all of this requires a different way of thinking about databases. I’ll explore how data storage, indexing, and querying works in DynamoDB, one of AWS’ NoSQL offerings.

Find previous news in the archive

Projects I contributed to


Cadasta platform is a set of tools collect, manage and store on land and property rights on the web.


GeoKey is a platform for participatory mapping. I developed GeoKey during my time at UCL ExCiteS, who have taken over development since my departure in October 2015.


Leaflet.Deflate is a plugin for the web mapping library Leaflet that converts features in low zoom levels to markers if they become too small to be visible and vice versa.

Django Skivvy

Django Skivvy is a helper library that helps you write faster integration tests for Django views with less code.

Other projects & experiments