Why is Fastly seeing a 30% rise in TLS handshake errors for clients connecting to its global network in the APAC region?

Introduction

Fastly's 30% rise in TLS handshake errors for APAC clients is a critical issue that demands immediate attention. This analysis will systematically identify, validate, and address the root cause while considering both short-term fixes and long-term strategic implications.

Step 1

Clarifying Questions (3 minute)

• Looking at the regional specificity, I'm wondering about network infrastructure. Has there been any recent changes to Fastly's APAC network topology or CDN node distribution?

Why it matters: Network changes could directly impact TLS handshake performance. Expected answer: Recent expansion or consolidation of APAC nodes. Impact on approach: Would focus on network optimization if confirmed.

• Considering the scale of the issue, I'm curious about client diversity. Are we seeing this increase across all client types, or is it concentrated in specific segments?

Why it matters: Helps narrow down if it's a client-side or server-side issue. Expected answer: Varied impact across different client segments. Impact on approach: Would tailor solutions based on affected client profiles.

• Thinking about potential external factors, have there been any significant changes in internet routing or ISP policies in the APAC region recently?

Why it matters: External network changes could affect TLS handshake success rates. Expected answer: Possible shifts in major ISP policies or routing changes. Impact on approach: Would involve engaging with ISPs if confirmed.

• Considering the timing, I'm wondering about any recent updates to Fastly's TLS configuration or certificate management processes. Have there been any changes in the past month?

Why it matters: Recent changes could have unintended consequences on handshake performance. Expected answer: Details of recent TLS-related updates or lack thereof. Impact on approach: Would focus on rolling back or optimizing recent changes if applicable.