What caused the sudden spike in error rates for Hubilo's live streaming functionality during last week's virtual conference?

Introduction

The sudden spike in error rates for Hubilo's live streaming functionality during last week's virtual conference is a critical issue that demands immediate attention and thorough analysis. As we delve into this problem, we'll follow a systematic approach to identify, validate, and address the root cause while considering both short-term fixes and long-term strategic implications.

Step 1

Clarifying Questions (3 minutes)

• Looking at the timing, I'm thinking this might be related to a recent system update. Has there been any significant changes to the live streaming infrastructure in the past week?

Why it matters: Recent changes often correlate with sudden performance issues. Expected answer: Yes, there was a minor update to the streaming servers. Impact on approach: If confirmed, we'd focus on rollback options and code review.

• Considering the nature of virtual conferences, I'm curious about the scale. Was this conference significantly larger than usual events on the platform?

Why it matters: Unexpected scale can expose hidden system limitations. Expected answer: The conference had 50% more attendees than our previous largest event. Impact on approach: If true, we'd prioritize scalability testing and infrastructure upgrades.

• Given the specificity of "live streaming functionality," I'm wondering if this affected all streams or just certain types. Were there any patterns in the errors across different session formats or presenter setups?

Why it matters: Identifying patterns can narrow down potential causes. Expected answer: Errors were more frequent in sessions with multiple presenters or screen sharing. Impact on approach: This would lead us to investigate multi-presenter handling and screen sharing modules.

• Thinking about user experience, I'm interested in the error manifestation. How did users primarily report or experience these errors?

Why it matters: User-reported issues can provide insights that backend metrics might miss. Expected answer: Users reported video freezes and audio dropouts. Impact on approach: This would guide our investigation towards video encoding and audio streaming components.