Personal technical journal
Notes on computer science,IT, and related topics
A personal journal on software, systems, and the ideas behind them. Written as I learn, shared as I go.
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The One Experiment Where the Split Didn't Matter
Every EEG and wearable experiment in this thread showed a leakage gap. Then I tried the same question on education data, and the gap nearly disappeared — which turned out to be the interesting part.
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Reproducing a Working-Memory Figure — and What Didn't Match
I tried to reproduce a published EEG finding on public data. My version came back the opposite direction. Here's the attempt, the honest result, and why I'm not calling it a refutation.
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The Main Types of System Design (And When Each One Fits)
A map of the system design vocabulary—monolith, layered, client-server, microservices, event-driven, SOA, P2P, and serverless—and the tradeoff each one is actually solving.
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The CAP Theorem: The Tradeoff Every Distributed System Makes
Why consistency and availability can't both survive a network partition, what CP and AP actually mean in practice, and why partition tolerance was never really the choice.
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What I'd Check Before Believing Any Brain-Decoding Result
Six small experiments in, here is the checklist I now run against any EEG or wearable-sensor accuracy claim — including my own.
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Deploy an Application from a Laptop to a Server
A technical guide on moving a Java appointment service to a Linux VPS, covering environment configuration, reverse proxies, and service lifecycle.
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Wrist vs. Chest — How Much Does Sensor Placement Change the Answer?
Same people, same task, same evaluation discipline — just a comfortable wrist band instead of a clinical chest rig. What does that actually cost, in numbers?
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