What factors are contributing to the sudden 30% increase in processing time for MetaMap's document authentication service this week?

Introduction

The sudden 30% increase in processing time for MetaMap's document authentication service this week is a critical issue that demands immediate attention. This analysis will systematically identify, validate, and address the root cause while considering both short-term fixes and long-term implications for our product ecosystem.

I'll approach this problem by first clarifying key details, ruling out external factors, and then diving deep into our product's user journey and metrics. From there, I'll form data-driven hypotheses, conduct root cause analysis, and propose a structured plan for validation and resolution.

Step 1

Clarifying Questions (3 minutes)

• Looking at the timing, I'm thinking this could be related to a recent deployment. Have there been any significant changes or updates to the document authentication service in the past week?

Why it matters: Recent changes often correlate with performance issues. Expected answer: Yes, there was a minor update. Impact on approach: If yes, we'll focus on the update's impact; if no, we'll look at other factors.

• Considering the scale of the increase, I'm wondering about traffic patterns. Has there been any unusual spike in user activity or document submissions recently?

Why it matters: Unexpected load can strain system resources. Expected answer: Traffic has been within normal ranges. Impact on approach: If traffic is normal, we'll focus more on internal system issues.

• Given the nature of document authentication, I'm curious about the types of documents being processed. Has there been any shift in the mix of document types submitted for authentication?

Why it matters: Different document types may have varying processing requirements. Expected answer: No significant change in document type distribution. Impact on approach: If unchanged, we'll look at other factors; if changed, we'll investigate the impact of document complexity.

• Thinking about system health, I'm concerned about potential infrastructure issues. Have we observed any anomalies in our server logs or monitoring systems?

Why it matters: Infrastructure problems can cause widespread performance degradation. Expected answer: Some unusual patterns in server logs have been noted. Impact on approach: If anomalies exist, we'll prioritize infrastructure investigation; if not, we'll focus more on application-level issues.