Sheet 03

Frontend & CDN Edge Caching

Global Content Delivery Network sizing, edge compression, and origin offload ratio.

Edge Hit Ratio98%

Edge Assumptions

CDN Cache Hit %98%

Static Asset / User2 MB

Brotli Compression %70%

Static Data/Day3,906.3 GBAsset demand

CDN Absorbed3828.1 GB98% edge cached

Origin Penetration78.1 GBMisses reaching backend

Global Edge PoPs2 Nodes5k RPS / PoP

Dynamic API RPS passing edge to Gateway:133 req/s

1. Total Static Data / Day (GB)

DAU × Static_Asset_MB_Per_User / 1024

2. Origin Traffic / Day (GB)

Static_Data_GB × (1 - CDN_Cache_Hit_Ratio_Pct / 100)

3. Required CDN Edge Nodes

CEIL(Peak_RPS / Edge_Node_Capacity_RPS)

4. CDN Peak Bandwidth (Gbps)

Peak_RPS × Static_Asset_MB × 8 / 1024 / 1000

5. Effective Bandwidth after Compression (Gbps)

CDN_Peak_Gbps × (1 - Compression_Reduction_Pct / 100)

6. Service Worker Absorbed RPS

Peak_RPS × Service_Worker_Hit_Pct / 100

7. Origin-Bound Dynamic RPS

Peak_RPS × (1 - CDN_Cache_Hit_Ratio_Pct / 100)