Close-up of a server rack with blinking LED indicators.

The Durability Guarantees That fsync Does Not Actually Provide

fsync is often assumed. This post uncovers those gaps and offers practical safeguards.

May 16, 2026 · 7 min · 1360 words · martinuke0
Illustration of a message broker with duplicate messages being filtered by an idempotent consumer.

Why Exactly-Once Delivery Requires Consumer Idempotency

Exactly-once delivery cannot be guaranteed without making consumers idempotent; this article breaks down the technical reasoning and shows how to implement idempotency in real systems.

May 16, 2026 · 7 min · 1323 words · martinuke0
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Tracing System Bottlenecks With the USE Method

The USE method offers a concise way to spot where resources are strained, helping engineers quickly narrow down performance problems.

May 16, 2026 · 6 min · 1236 words · martinuke0
Illustration of a B‑Tree node being duplicated on an SSD.

Why Copy-on-Write B-Trees Fragment Your SSD Storage

Copy‑on‑Write B‑Trees improve database performance but introduce write‑amplification that fragments SSDs; this post explains the mechanics and mitigation strategies.

May 16, 2026 · 7 min · 1314 words · martinuke0
Atomic clock module beside server rack.

Implementing Atomic Clock Synchronization in High‑Frequency Trading Networks

Atomic clocks give HFT firms nanosecond accuracy, aligning timestamps across data centers. This guide walks through hardware, protocols, and operational best practices.

May 16, 2026 · 6 min · 1215 words · martinuke0
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