Opinion
David Sexton · 8 July 2026 · 8 min read
Today's Telstra outage is a redundancy failure, not just a telco failure
Phones, EFTPOS, and regional trains all went down today when Telstra's network failed. The outage itself is Telstra's problem to explain. The fact that a national rail network had no working fallback beyond one carrier is a design decision worth questioning — and a useful test for which systems actually need it.
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Linux & Servers
David Sexton · 7 July 2026 · 13 min read
Nginx vs Apache: how my default web server quietly changed
I ran Apache for two decades because it was the standard. Then I came to Nginx through the reverse-proxy door, and somewhere along the way it became what I reach for first. The honest story of how that happened — and why the real answer isn't that one server won, but that the work itself changed shape.
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App Development
David Sexton · 2 July 2026 · 7 min read
What building dAudio taught me about the real cost of vibe coding
I built a deliberately minimal Android music player with AI assistance in about ten hours — and the most useful thing I learned had nothing to do with the code. The design decisions, where the AI pushed back on human habit, and the honest arithmetic of shipping a "vibe coded" app.
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Linux & Servers
David Sexton · June 2026 · 12 min read
FreeBSD vs Linux: a quarter century of perspective
From a 386 running Slackware in a cupboard in 1998 to retiring the last FreeBSD VM in 2024 — what 25 years of running both actually taught me, and an honest assessment of where each one belongs.
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Opinion
David Sexton · June 2026 · 8 min read
Vibe coding: professional skill, hobby, or liability?
Using AI to generate code is genuinely useful in the right hands. In the wrong ones it's a circular saw plugged in at a busy bar on Saturday night. An opinion from someone who's been in IT long enough to have strong ones.
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AI & Hardware
Series: Part IV
David Sexton · 23 June 2026 · 14 min read
Local LLM GPU upgrade: RTX 5060 Ti vs RTX 2060 Super — six models benchmarked
The RTX 2060 Super is out, the RTX 5060 Ti 16GB is in. Full benchmarks across six models show what 16GB of VRAM actually changes — and one finding that no amount of new hardware was ever going to fix.
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AI & Hardware
Series: Part III
David Sexton · 12 June 2026 · 9 min read
Building a local LLM on a budget: Part III — software, the 4am saga, and benchmarks
The GPU is in. The 4am battle with Google's AI over a truncated localhost URL finally gets resolved, Ollama replaces LM Studio, and the benchmarks show what 8GB of VRAM and a correctly configured context window actually buy you — and what they don't.
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AI & Hardware — Deep Dive
LLM Series — Companion
David Sexton · 12 June 2026 · 12 min read
Local LLM model comparison: gemma4 vs qwen2.5-coder on a real spec
Four models, one demanding prompt, and a result that runs against the usual assumptions: the general-purpose model beat both code-specialist models — including one with code that would throw a runtime error if you ran it.
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AI & Hardware
Series: Part II
David Sexton · 12 June 2026 at 9:00 am · 7 min read
Building a local LLM on a budget: Part II — the build
The Machinist X99 arrives from China faster than Auspost moved the GPU one state. No manual, no CMOS battery, a heatsink that needed a drill, and a BIOS loop fixed by swapping the keyboard. Ubuntu is running. The GPU might arrive today.
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AI & Hardware
LLM Series — Interlude
David Sexton · June 2026 · 5 min read
While I wait: running Gemma 4 on laptop hardware
The dedicated build hardware is still in transit. In the meantime: what actually happens when you try to run Gemma 4 E4B on a Core i7-8850H with 64GB RAM for a serious multi-hour session. Spoiler: it starts well.
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AI & Hardware
Series: Part 1
David Sexton · June 2026 · 6 min read
Building a local LLM on a budget: Part I — the hardware
I keep hitting cloud AI token limits at the worst possible moments. The solution — obviously — is to build something. Salvaged server hardware, a budget GPU, a 25-year-old rack case, and some 3D-printed brackets holding it all together.
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3D Printing
David Sexton · June 2026 · 8 min read
My journey into 3D printing — where it started, where it's gone, and what I'd tell myself at the beginning
I came to 3D printing the way a lot of people do — convinced it would solve a specific problem, then completely sidetracked by the technology itself. This is the broad overview before I go off into the weeds on individual topics.
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