Data architecture and platforms
Valery Frolov
I am a data architect. I write about building and running data platforms, mostly from years of working on data infrastructure at Wix.
Featured writing
Notes from platform work.
A few essays on data architecture, platform operations, cost, ownership, and the parts of the system that are easy to ignore.
The Kafka-to-Iceberg Pipe Is Disappearing. The Table Contract Is Not.
How Kafka topics became Iceberg tables before the convergence wave, how the new solutions actually differ, and the questions that decide which one fits your platform.
When Iceberg Says 321 GB and S3 Says 46 TB
Iceberg metadata can be correct while S3 is still billing you for tens of terabytes under the same table path.
Who Owns This Table?
Most data lake cost problems are ownership problems wearing a storage bill costume.
Operating lens
How I look at data platforms.
Tables, storage, pipelines, catalogs, and cost reports all tell part of the story. Good platform work is connecting those views early enough to make better decisions.
