Why has Match's profile photo upload success rate declined from 95% to 80% in the past two weeks?

Introduction

The recent decline in Match's profile photo upload success rate from 95% to 80% over the past two weeks is a critical issue that demands immediate attention. This significant drop in a core functionality could severely impact user experience, engagement, and ultimately, the platform's success. 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 timing, I'm thinking there might have been a recent update. Has there been any software deployment or infrastructure change in the last 2-3 weeks?

Why it matters: Recent changes often correlate with performance issues. Expected answer: Yes, there was a minor update. Impact on approach: If yes, we'd focus on that change; if no, we'd look at external factors.

• Considering user segments, I'm curious about the distribution. Is this decline uniform across all user groups or more pronounced in specific segments?

Why it matters: Helps identify if it's a global issue or specific to certain users. Expected answer: The decline is more significant among Android users. Impact on approach: If segmented, we'd focus on the most affected group; if uniform, we'd look at system-wide issues.

• Thinking about the upload process, I wonder if there have been changes in average file sizes. Have users been uploading larger photos recently?

Why it matters: Larger files could strain the system, causing more failures. Expected answer: No significant change in average file size. Impact on approach: If yes, we'd look at optimizing for larger files; if no, we'd investigate other technical aspects.

• Considering external factors, has there been any change in network providers or CDN services used for photo uploads?

Why it matters: External service changes could impact upload success rates. Expected answer: No changes in external services. Impact on approach: If yes, we'd investigate the service change; if no, we'd focus more on internal factors.