# Engineering Blog — Systems, Data & Architecture | Aritro Saha

> Technical deep-dives, systems architecture, Apple Silicon OCR engineering, and Python fault-tolerance patterns by Aritro Saha.

Canonical: https://www.aritro.cloud/blog
Last updated: 2026-10-26

## Engineering Notes & Architecture
Technical deep-dives into high-throughput data engineering, native macOS systems, fault-tolerant Python architectures, and modern web performance by Aritro Saha.

## Published Articles
- [Building Sub-50ms Zero-Disk Screen OCR with Swift 6 & Apple Vision Framework](https://www.aritro.cloud/blog/swift-vision-ocr-apple-neural-engine) — How to architect an in-memory macOS screen OCR pipeline using Swift 6, NSPasteboard, and Apple Vision VNRecognizeTextRequest with zero temporary disk writes. (6 min read, 2026-10-20)
- [Architecting Zero-Crash Batch Data Pipelines with Python Dead-Letter Queues (DLQ)](https://www.aritro.cloud/blog/python-dead-letter-queue-batch-pipelines) — Eliminate pipeline crashes at record #5,247. A deep dive into implementing fault-tolerant Python loops, atomic error serialization, and surgical CLI replays. (8 min read, 2026-10-24)
- [Achieving 0ms Perceived Navigation in Vite & React 19 with W3C Speculation Rules](https://www.aritro.cloud/blog/instant-navigation-speculation-rules-vite-ssg) — How to upgrade traditional SPAs into instant-navigation platforms using modern W3C Speculation Rules, React 19 SSG prerendering, and Core Web Vitals optimization. (5 min read, 2026-10-28)

## Related
- [Portfolio Home](https://www.aritro.cloud/)
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