┌──────────────────────────────────────────────────────────────────┐
│ pushkar@iitgn:~$ │
├──────────────────────────────────────────────────────────────────┤
│ │
│ $ whoami │
│ > Pushkar Nikunjkumar Modi │
│ > B.Tech CS @ Indian Institute of Technology Gandhinagar │
│ > Full-Stack Developer · Systems Engineer · Problem Solver │
│ │
│ $ cat projects.txt │
│ > 🔭 GateGuard — Campus gate system with ACID transactions, │
│ > B+ Tree storage & WAL crash recovery │
│ > ⚡ DSA Engine — Complete data structures in C from scratch │
│ > 🌐 REST Apps — React + Node.js production-grade APIs │
│ │
│ $ cat stack.txt │
│ > Frontend : React, TypeScript, Tailwind CSS, Vite │
│ > Backend : Node.js, Express, PostgreSQL, REST APIs │
│ > Systems : B+ Trees, WAL, ACID, Crash Recovery, RBAC │
│ > Languages : JavaScript, TypeScript, Python, Java, C, SQL │
│ │
│ $ cat fun_facts.txt │
│ > ⚡ Implemented Write-Ahead Log & ACID from scratch │
│ > 🎯 50-thread race condition test: 1 winner, 49 losers — ✅ │
│ > 🧠 Debugging at 2AM hits different when you love the grind │
│ > ☕ Powered by chai, not coffee │
│ │
│ $ echo "Let's build something real." │
│ > Let's build something real. │
│ │
└──────────────────────────────────────────────────────────────────┘|
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| 🔭 Building | 🌱 Learning | 🎯 Goal |
|---|---|---|
| GateGuard v2 — Production hardening | System Design & Advanced DSA | SDE @ top product company |
| REST API best practices | Cloud (AWS / GCP basics) | Open source contributions |
| B+ Tree optimizations | TypeScript deep dive | 100+ LeetCode problems |
╔══════════════════════════════════════════════════════════════╗
║ 🏆 ACID TRANSACTIONS FROM SCRATCH — IIT Gandhinagar CS432 ║
╠══════════════════════════════════════════════════════════════╣
║ ║
║ Built a complete Write-Ahead Log (WAL) engine in Python ║
║ on top of a custom order-4 B+ Tree database: ║
║ ║
║ ✅ Atomicity — LIFO Undo Stack rollback ║
║ ✅ Consistency — B+ Tree invariant checker (10 tables) ║
║ ✅ Isolation — SELECT FOR UPDATE row-level locking ║
║ ✅ Durability — fsync'd WAL + REDO crash recovery ║
║ ║
║ Race condition proof: 50 threads → 1 winner, 49 rejected ║
║ Status counts: { "201": 1, "400": 49 } invariant_ok: ✅ ║
║ ║
╚══════════════════════════════════════════════════════════════╝
"The best code is code that solves a real problem."