stanislav kozlovski

The future of Kafka is diskless topics + native Apache Iceberg / Delta Lake integration Intro Ursa is a relatively new engine that's being fitted into Kafka. This is done through a minimally invasive fork that will be open-sourced in a few months. Here's why one should care: introduces Diskless Topics to Kafka — the ones that WarpStream pioneered, with 10x lower infra costs, simpler operations, instant scalability, etc.

MongoBleed, officially CVE-2025-14847, is a recently-uncovered extremely sensitive vulnerability affecting basically all versions of MongoDB since ~2017. It is a bug in the zlib1 message compression path in MongoDB. It allows an attacker to read off any uninitialized heap memory, meaning anything that was allocated to memory from a previous database operation could be read. The bug was introduced in 20172. It is dead-easy to exploit - it only requires connectivity to the database (no auth needed).

Everyone knows what AWS S3 is, but few comprehend the massive scale it operates at, nor what it took to get there. In essence - it’s a scalable multi-tenant storage service with APIs to store and retrieve objects, offering extremely high availability and durability at a relatively low cost. 400+ trillion objects 150 million requests a second (150,000,000/s) > 1 PB/s of peak traffic tens of millions of disks Hard drives. How S3 achieves this scale is an engineering marvel.