System design, AI engineering, databases, networking, concurrency and more, written for engineers building real trading and fintech systems — part of the Algomi Suite.
Sunita uploads 400 wedding photos from a train with patchy Wi-Fi. Follow them through a photo service that separates bytes from metadata, treats upload, processing and deletion as retryable workflows, and borrows one big idea from Facebook's Haystack.
Created 2026-09-16 · Updated 2026-10-15 · System Design
A 17-year-old uploads a 2 GB cooking video over a shaky connection. By evening it has a million views, including his grandmother's, on a 2G phone. Follow it to see how a video platform accepts huge uploads, builds many playable versions, serves them from nearby caches, and counts views without a slow database.
Created 2026-09-26 · Updated 2026-10-15 · System Design
