Why did Play Store app download speed decrease by 55% globally?

Introduction

The sudden 55% decrease in Play Store app download speed globally is a critical issue that demands immediate attention and a thorough investigation. This significant drop in performance could have far-reaching consequences for user experience, app developer satisfaction, and Google's market position. 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 global nature of the issue, I'm wondering about infrastructure changes. Have there been any recent updates to our content delivery network (CDN) or server infrastructure?

Why it matters: Infrastructure changes could explain a widespread performance drop. Expected answer: Information about recent infrastructure updates or lack thereof. Impact on approach: If confirmed, we'd focus on rolling back changes or optimizing the new infrastructure.

• Considering the specific metric affected, I'm curious about potential changes in measurement. Has there been any modification to how we calculate or report app download speed?

Why it matters: Ensures we're addressing a real issue and not a reporting anomaly. Expected answer: Confirmation of consistent measurement methods or details of recent changes. Impact on approach: If measurement changed, we'd need to validate the new method and potentially recalibrate our baseline.

• Given the magnitude of the decrease, I'm thinking about potential external factors. Have we observed any correlation with specific global events or internet service provider (ISP) issues?

Why it matters: External factors could explain a sudden, widespread performance drop. Expected answer: Information about any known global events or ISP issues coinciding with the speed decrease. Impact on approach: If external factors are identified, we'd need to collaborate with ISPs or adjust our strategy to mitigate their impact.

• Considering user experience, I'm wondering about the distribution of the speed decrease. Is this 55% decrease uniform across all regions and app types, or are there notable variations?

Why it matters: Helps identify if the issue is truly global or more localized/specific. Expected answer: Data on the distribution of the speed decrease across regions and app categories. Impact on approach: Variations would guide us to focus on specific regions or app types for more targeted solutions.