Building Scalable Streaming Applications

DataStax has recently released its Astra Streaming, enabling developers to build streaming applications on top of an elastically scalable, multi-cloud messaging and event streaming platform powered by Apache Pulsar. This article will walk you through a short demo that will provide a great starting point for familiarizing yourself with this powerful new streaming service.

Here’s what you will learn:

Aggregate Functions in Stargate’s GraphQL API

A new release of Stargate.io was applied to Astra DB that includes an exciting new feature: aggregate functions! If you’re not familiar with aggregate functions, they are functions that look at the data as a whole and perform a function like min(), max(), sum(), count() and avg().

Until now, aggregate functions were only available using cqlsh (the CQL Shell). However, with the Stargate 1.0.25 release they are now also available using the GraphQL API. In this blog entry, I’ll walk you through the process to get early access to this exciting new functionality in Stargate, and how to setup everything you need to test your own aggregate queries.