Turning a sequential autograder into a 5.73-second parallel pipeline
A systems-programming retrospective on student-level pthreads, overlapped fork/exec preparation, answer caching, buffered I/O, and deterministic output.
Engineering
CPOSIXpthread
Engineering
Architecture decisions, implementation trade-offs, testing, and maintainability.
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A mini language from lexer to AST evaluation—and the grammar contract found in review
A retrospective on a Python and C++ recursive-descent interpreter, including runtime probes that exposed differences between its README and actual semantics.
Engineering
InterpreterRecursive DescentAST
From a 32-bit string to a RISC-V fetch-decode-execute loop
A computer-architecture retrospective on R, I, S, and B bit fields, sign extension, two-pass branch labels, and a deliberately limited virtual CPU.
Engineering
CRISC-VComputer Architecture
Contract-testing duplicated scores and Stable Roommates
Shared fixtures kept parallel frontend and backend scoring aligned, while a small brute-force oracle checked the matching algorithm independently.
When a cached Spring context points to a dead Testcontainer
Aligning class-scoped containers with a cached Spring context, then removing a second CI flake caused by a reservation worker consuming test fixtures.
Why I Split My Technical Blog into Static Pages and a Git-Backed Admin
An architecture record of separating Astro's static reading experience from browser-based management of posts, categories, and drafts with Keystatic.
Why Worklogs Belong on GitHub and Explanations Belong on the Blog
A documentation structure that connects Issues, worklogs, ADRs, troubleshooting records, and technical articles without copying every project change into the blog.
Turning coordinate clicks into verifiable UI state transitions
A design for controlling source-less Windows kiosks through UIA, OCR, verified postconditions, and a hard stop before payment input.