How Database Inserts Work: WAL and Buffer PoolsQuick Answer: When you insert data into a database, it doesn't immediately write to the main data table on disk. Instead, it caches the data in a RAM-based buffer pool and writes to an append-only WriJun 11, 2026·5 min read
Apple Secure Enclave: Face ID Security ExplainedQuick Answer: No, neither Apple nor the government can read your Face ID data. Your biometrics are processed entirely on-device within the Secure Enclave—a physically isolated subsystem with its own CJun 10, 2026·4 min read
How Face ID Adapts to Beards and Facial ChangesQuick Answer: Apple's Face ID doesn't rely on a single, static image. Instead, it stores a high-precision mathematical map of your facial geometry that continuously updates. Every successful unlock meJun 10, 2026·5 min read
Optimize Your Codebase for AI Coding AgentsTL;DR: Quick Answer If your codebase doesn't contain the exact nouns and verbs you use to prompt your AI coding agent, the agent will do a much worse job. By ensuring your code reflects your spoken doJun 8, 2026·5 min read
Prompting AI Coding Agents to Write Clean CodeQuick Answer: AI coding agents default to writing dense, monolithic scripts because they seek the path of least resistance to your desired outcome. To fix this, you must explicitly define what "good cJun 8, 2026·5 min read
Why COBOL Still Powers Modern Banking SystemsQuick Answer: COBOL still runs 95% of ATM transactions and 43% of banking systems because replacing it is overwhelmingly risky and expensive. Originally adopted in the 1960s for its readable, English-Jun 8, 2026·5 min read
How OLED & LTPO Enable Always-On DisplaysTL;DR: Always-on displays don’t drain your phone battery because they rely on two hardware advancements: OLED panels and LTPO technology. OLEDs save power by physically turning off pixels to display bJun 7, 2026·5 min read
