Technical write-ups from coursework, hands-on labs, and independent practice — covering systems administration, secure web development, and database engineering.
A hands-on walkthrough of building automated backup and disaster-recovery pipelines on Linux using cron, rsync, and shell scripting — covering retention policies, integrity verification, and recovery drills for production-style reliability.
6 min readBreaking down real SQL injection attack vectors and the advanced PHP defenses that stop them — parameterized queries, PDO prepared statements, input validation, and least-privilege database design.
8 min readPractical techniques for tuning slow Oracle queries and refining schema design — indexing strategy, execution plan analysis, normalization trade-offs, and query rewriting for real-world performance gains.
7 min read