Why are Marketplace product images failing to load in 80% of listings?

Introduction

The sudden failure of Marketplace product images to load in 80% of listings is a critical issue that demands immediate attention. This problem not only impacts user experience but also threatens the core functionality of our Marketplace platform. I'll approach this analysis 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 scale of the issue, I'm thinking this might be a recent development. When did we first notice this 80% failure rate?

Why it matters: Timing helps identify potential triggers and narrows down the scope of investigation. Expected answer: Within the last 24-48 hours. Impact on approach: Recent onset suggests looking at recent changes or deployments.

• Considering the specificity of the issue, I'm wondering if it's affecting all users equally. Are we seeing any patterns in terms of user segments, devices, or regions more affected than others?

Why it matters: Helps isolate the problem and identify potential infrastructure or compatibility issues. Expected answer: The issue is widespread but more prevalent on mobile devices. Impact on approach: Focus on mobile-specific factors and potential CDN or image processing pipeline issues.

• Given the nature of Marketplace listings, I'm curious about the types of images affected. Is this issue consistent across all image sizes and formats, or are we seeing variations?

Why it matters: Could point to specific image processing or storage issues. Expected answer: The problem affects all image types but is more noticeable with larger, high-resolution images. Impact on approach: Investigate image processing pipelines and storage systems, particularly for high-res images.

• Thinking about our monitoring systems, I'm wondering about our error logs. Have we seen any spike in specific error messages or unusual patterns in our logs coinciding with this issue?

Why it matters: Error logs often provide direct clues to technical issues. Expected answer: There's been an increase in timeout errors from our image CDN. Impact on approach: Focus on CDN performance, capacity, and configuration issues.