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A Trace in TimeA reflection on time, attention, and the beliefs that shape how we live.25 Sept 20263 min read
Fixing Automatic Rotation on a Lenovo Yoga 7 2-in-1 with FedoraFedora could not see the Yoga 7 14ILL10 accelerometer. Installing Lenovo's model-specific ISH firmware brought it back.23 Sept 20263 min readFedora Linux hardware
On Social Media and ConnectionDesigning reactions that don't demand a response, and how constant visibility slowly redefined what we treat as connection.18 Sept 20261 min readsocial-media attention connection
How to Get Roam-Style Bullet Navigation in ObsidianHow to replicate the click-to-zoom outliner interaction from Roam, RemNote, and Logseq in Obsidian, with two plugins and a CSS snippet for styled bullets.07 Apr 20263 min readObsidian PKM
Interface Segregation Principle (ISP): Narrow the ContractA shared contract that grows to serve everyone ends up serving no one well. Learn how ISP keeps each interface honest about what its client actually needs.04 Apr 20268 min readdesign-principles oop series
How I Use Obsidian as a Thinking StudioHow I configured Obsidian as a developer's personal thinking studio — vault structure, web clipper, key plugins, and the PKM ideas behind each decision.01 Apr 202611 min readPKM Obsidian
P50, P95, P99, and the Average: What Latency Numbers Actually Tell YouAverage response time hides the worst user experiences. P99 can run 100× slower than P50 on the same dataset. What P50, P95, and P99 mean, why they matter, and how to read them together.30 Mar 20269 min readperformance observability
Hot Path: How to Identify and Optimize It in .NETA hot path is code that runs on every request — small inefficiencies there compound into P99 spikes users actually feel. How to find hot paths with profilers and fix them in .NET.30 Mar 20269 min readdotnet performance
Dependency Inversion Principle (DIP): Depend on AbstractionsWhen business logic knows which database it's talking to, the database owns the business logic. Learn how DIP breaks that grip by making policy depend on what it needs, not on how it's delivered.27 Mar 20268 min readdesign-principles oop series
Liskov Substitution Principle (LSP): Keep the PromiseA subtype that can't fully honor its parent's contract doesn't announce itself — it waits. Learn how LSP ensures the contract you depend on is the contract you actually get.26 Mar 20264 min readdesign-principles oop series
Open Closed Principle (OCP): Extend Without BreakingCode that has to be opened every time requirements change is code you will eventually break. Learn how OCP lets new behavior arrive as new files, not as edits to existing ones.24 Mar 20266 min readdesign-principles oop series
Async Best Practices in C#A checklist of async habits that prevent the most common bugs: keeping the async chain intact, avoiding .Result, using ConfigureAwait correctly, forwarding CancellationToken, and handling fire-and-forget exceptions.27 Oct 20255 min readdotnet async-await series
How to Design Reliable Async Methods in C#Reliable async methods return Task, accept CancellationToken, and surface failures clearly. This part covers the structural decisions that make async methods composable and predictable for callers.26 Oct 20255 min readdotnet async-await series
Exception Handling in Async C# MethodsExceptions in async code are captured by the Task and re-thrown at the await point - not where they were thrown. This part covers where to catch them, why async void makes them disappear, and how to handle Task.WhenAll failures.25 Oct 20255 min readdotnet async-await series
Continuations and SynchronizationContext in C#After an await completes, the method resumes on a thread determined by the captured SynchronizationContext. In UI apps that means the UI thread; in ASP.NET Core it means a thread-pool thread. This is what ConfigureAwait(false) controls.24 Oct 20254 min readdotnet async-await series
Async vs Parallel in C#: I/O-Bound vs CPU-Bound WorkAsync frees threads during I/O waits. Parallel divides CPU work across cores. They solve different problems and should not be swapped. This part explains when to use each and when to combine both.23 Oct 20254 min readdotnet async-await series
How Async/Await Improves Throughput and Responsiveness in C#Blocking threads during I/O wastes capacity. Async handlers free threads while waiting, so a web API serves more concurrent requests and a desktop app stays responsive during data loads.22 Oct 20254 min readdotnet async-await series
How async/await Works: The C# State Machine ExplainedThe compiler transforms every async method into a state machine that suspends at each await and resumes with local variables intact. This part shows what that transformation looks like and what it costs.21 Oct 20254 min readdotnet async-await series
What Is Async/Await in C# and Why Does It Exist?Async/await is not about making code faster. It is about not holding a thread hostage while it waits for I/O. This part explains the problem async solves and the mental model behind it.20 Oct 20254 min readdotnet async-await series