Arkstack Blog

Two Exeris Kernel seams I retrofitted — body codec and identity provider — and why both gaps were invisible until I read the consumer's code, not the contract.

Direct ByteBuffer gives you zero-copy.

RETRACTED FINDING (2026-08-27): this article's central claim — that two saga stacks dropped compensations under configured failure injection — was a defect in my own benchmark harness, not a property of the frameworks under test.

STS gives you structured concurrency within a scope.

In a zero-allocation runtime, SSLEngine becomes a structural mismatch.

Why StructuredTaskScope fit my subsystem startup orchestration better than futures or thread pools — and why I still kept part of bootstrap strictly sequential.

A pragmatic look at how Data-Oriented Programming and modern JDK primitives can reduce the abstraction tax of traditional GoF patterns in closed-domain systems.

In a zero-copy runtime designed for 1-VT-per-Stream density, ThreadLocal is a performance serial killer.

Arkstack.dev is an engineering blog focused on JVM Performance Tuning, Low-Latency Java Architecture, Off-heap Memory Management, and Legacy System Modernization.