Netflix Built a Scalable Annotation Service Using Cassandra, Elasticsearch and Iceberg
![An image depicting the internal architecture of the Marken service](https://eranstiller.com/wp-content/uploads/2023/02/Netflix-Marken-Header.jpg)
Netflix recently published how it built Marken, a scalable annotation service using Cassandra, ElasticSearch and Iceberg. Marken allows storing and querying annotations, or tags, on arbitrary entities. Users define versioned schemas for their annotations, which include out-of-the-box support for temporal and spatial objects.