Blog
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Playwright E2E Testing | Automation· Locators
End-to-end testing with Playwright: projects, auto-waiting locators, route mocking, auth storage state, sharded CI, trace viewer, and how the runner.
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PM2 Complete Guide | Production Process Manager for Node.js
Complete PM2 guide for Node.js production deployment.
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pnpm Complete Guide
Complete pnpm guide for Node.js package management.
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PostgreSQL Query Optimization Guide | EXPLAIN· Indexes
Optimize PostgreSQL for production.
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Preact Complete Guide | Fast 3KB React Alternative
Complete Preact guide for building fast web apps. Learn the lightweight React alternative with the same API, hooks, and components.
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Prettier Complete Guide | Opinionated Code Formatter
Complete Prettier guide for code formatting.
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Prisma Complete Guide | Schema· Queries
A complete guide to Prisma ORM for Node.js and TypeScript, covering schema design, migrations, and type-safe queries.
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Python Performance Optimization Case Study
From ~10 hours to minutes: profiling a Python CSV pipeline with cProfile, NumPy vectorization, Cython, and multiprocessing—real numbers and trade-offs.
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Python list vs tuple vs set | Mutability· Performance
Compare Python list, tuple, and set: ordering, duplicates, big-O operations, memory, and a decision flowchart for real code.
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Python Complete Guide | CPython Internals· GIL
CPython architecture from AST to ceval, the GIL and concurrency trade-offs, refcount and generational GC, importlib and package rules, plus logging.