Vishal ShetagarSystems engineering — software, networking, hardware, and how systems actually work.https://vishalshetagar.vercel.app/Building OTA Updates Taught Me Everything Except OTAhttps://vishalshetagar.vercel.app/blog/building-ota-updates-taught-me-everything-except-ota/https://vishalshetagar.vercel.app/blog/building-ota-updates-taught-me-everything-except-ota/What started as an OTA update feature became a lesson in CI/CD, networking, security, provisioning, and building production IoT systems.Sat, 25 Jul 2026 00:00:00 GMTData Event Listeners on Different Layers Explainedhttps://vishalshetagar.vercel.app/blog/data-event-listeners-on-different-layers-explained/https://vishalshetagar.vercel.app/blog/data-event-listeners-on-different-layers-explained/A simple breakdown of how different layers detect, propagate, and react to events from DB triggers and outbox events to Kafka, webhooks, and eBPF/XDP.Fri, 28 Aug 2026 00:00:00 GMTHello, World!https://vishalshetagar.vercel.app/blog/hello-world/https://vishalshetagar.vercel.app/blog/hello-world/A short introduction before the real posts begin.Sat, 25 Jul 2026 00:00:00 GMTHow Linux Actually Knows a Package Isn't Malwarehttps://vishalshetagar.vercel.app/blog/how-linux-actually-knows-a-package-isnt-malware/https://vishalshetagar.vercel.app/blog/how-linux-actually-knows-a-package-isnt-malware/Understanding one repository fingerprint led me through GPG, Release files, hashes, and the cryptography behind every apt install.Mon, 03 Aug 2026 00:00:00 GMT