System design blob
Image upload → blob → CDN
Azure-flavored: Blob, Event Grid, Functions, CDN. Direct-to-blob SAS upload.
Week 5Thursday 12 NovemberBlob pipeline
Day 31: Upload and CDN pipeline
0 of 4 tasks completed0%
System design blob
Scan, thumbnails, invalidation
Async pipeline, poison images, cache keys, and how you purge a bad asset.
Estimation
10M uploads/day, 2MB avg
Ingress GB/day, storage/month, thumbnail extra, and CDN egress.
LLD storage
Asset metadata model
id, owner, content-type, versions, CDN URL. Status machine: uploaded→scanned→ready.