<b>The app whose Indian users hit a US edge</b>
A productivity app served 60k daily users in India but, due to a misconfigured anycast announcement, their Mumbai and Delhi traffic was routing to a US-West point of presence. Users 13,000km from the wrong edge saw 320ms just to reach cache, even on hits.
The content was fine; the routing was broken. We worked with the CDN to fix the BGP announcement so Indian ISPs preferred the Mumbai and Chennai points of presence. No application change at all.
Mumbai round-trip to the edge dropped from 320ms to 28ms. Delhi went from 340ms to 34ms. Cache-hit ratio was already 92%, but now those hits resolved an order of magnitude faster. Indian session length rose 18% as the app finally felt local.
The number that mattered: 320ms to 28ms round-trip in Mumbai.
Edge of Glory
@EdgeOfGloryCDN
<b>The app whose Indian users hit a US edge</b>
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