The Feldera Blog
An unbounded stream of technical articles from the Feldera team

Indexed Z-sets
How to implement JOINs and GROUP BY on Z-set

Database computations on Z-sets
How can Z-sets be used to implement database computations

Calcite program representations
This article is about the Apache Calcite compiler framework. We describe the core data structures used by Calcite to represent programs.

How to Continuously Analyze Streaming Data from Redpanda
You can write standard SQL on fast changing data from Redpanda

Desperately Seeking Kafka
Seeking a Kafka consumer is trickier than it appears

Implementing Z-sets
In this post we write some Java code which implements ZSets, to (1) show how simple they are and (2) to make it completely clear how they work.

Z-sets - Representing Database Changes
In a previous post we have discussed computing on changes. This discussion is about changes to the contents of databases.

DBSP Paper awarded Best Research Paper at VLDB
Announcing our best paper award at VLDB 2023 for describing the mathematical theory behind the correctness, performance and extensibility for incremental queries.
Announcing Feldera, the company
Announcing Feldera's funding round and launch as a company.