Why has Messenger media sharing failed for 45% of attempts?

Introduction

The Messenger media sharing failure rate of 45% is a critical issue that demands immediate attention. This high failure rate not only impacts user experience but also threatens the core functionality of our messaging platform. I'll approach this problem systematically, focusing on identifying the root cause, validating hypotheses, and developing both short-term fixes and long-term solutions.

Step 1

Clarifying Questions (3 minutes)

• Looking at the failure rate, I'm wondering about the specific types of media affected. Are we seeing equal failure rates across images, videos, and other file types, or is there a disparity?

Why it matters: Different media types may have different processing requirements, helping us narrow down potential technical issues. Expected answer: Video sharing has a higher failure rate (60%) compared to images (30%) and other file types (20%). Impact on approach: This would focus our investigation on video processing and compression algorithms.

• Considering user segments, I'm curious if this issue is more prevalent among certain user groups. Are we seeing any patterns in terms of device types, operating systems, or geographical regions?

Why it matters: This could help identify if the problem is related to specific hardware, software, or network infrastructure. Expected answer: iOS users in Southeast Asia are experiencing a 70% failure rate, while other segments hover around 30-40%. Impact on approach: We'd prioritize investigating iOS-specific issues and potential network problems in Southeast Asia.

• Thinking about recent changes, have we deployed any updates to the media sharing feature or related backend systems in the past month?

Why it matters: Recent changes could be directly responsible for the increased failure rate. Expected answer: A backend update to improve media compression was rolled out two weeks ago. Impact on approach: We'd focus on reviewing and potentially rolling back this update as an immediate action.

• Considering the metric itself, has there been any change in how we define or measure a "failed" media sharing attempt?

Why it matters: Ensures we're not dealing with a data anomaly or change in measurement. Expected answer: No changes to the metric definition or measurement system. Impact on approach: Confirms the issue is real and not a result of altered data collection methods.