#cloud #java #architecture #exeris

Welcome to Arkstack

An introduction to the Arkstack blog — a developer-focused space for Cloud Architecture, modern Java, and zero-waste engineering.

Welcome to Arkstack.dev — a minimalistic, developer-focused blog with zero unnecessary fluff.

This is the digital home of Arkadiusz Przychocki, Lead Cloud Architect & Full-Stack Engineer. If you care about clean systems, modern JVM engineering, and cloud-native architecture done right, you’re in the right place.

What to Expect

This blog covers the intersection of:

  • Cloud Architecture — designing resilient, cost-efficient systems on AWS, GCP, and Azure. Infrastructure as code, distributed systems, and the hard lessons learned in production.
  • Modern Java — the language is evolving faster than ever. Virtual threads (Project Loom), sealed classes, pattern matching, and the growing ecosystem around GraalVM native image compilation.
  • Zero-Waste Engineering — every abstraction has a cost. We care deeply about what actually runs on the metal.

Exeris Kernel

One of the flagship projects I’m working on is Exeris Kernel — a zero-allocation runtime designed for ultra-low-latency workloads. The core philosophy:

Every allocation is a liability. Every system call is a negotiation. We opt out of both wherever possible.

Exeris Kernel is built on top of the JVM’s Foreign Function & Memory API, leveraging off-heap memory management to achieve predictable, GC-pause-free execution. It’s designed for financial systems, real-time data pipelines, and anywhere nanoseconds matter.

// Example: off-heap buffer allocation in Exeris Kernel
var arena = Arena.ofConfined();
var segment = arena.allocate(ValueLayout.JAVA_LONG, 1024);
segment.setAtIndex(ValueLayout.JAVA_LONG, 0, System.nanoTime());

The Philosophy

The philosophy of this blog mirrors the philosophy of Exeris: No Waste.

  • No unnecessary client-side JavaScript on this site
  • No bloated frameworks where a pure function suffices
  • No ceremony when simplicity delivers the same result

Built with Astro — the framework that ships zero JS by default.

Stay Tuned

Upcoming content includes deep dives into:

  • GraalVM native image compilation for Spring Boot services
  • Designing multi-region active-active architectures
  • The Exeris Kernel internals: lock-free queues and off-heap buffers

Let’s build things that last.