Duraid Wadie

Head of M&A Architecture

Medium Article ยท 3 min read ยท Aug 14, 2019

When Our Authentication Service Collapsed-And What We Rebuilt in Its Place

AuthenticationSystem Design ConceptsAWSAPIObservability

Article summary

When Our Authentication Service Collapsed-And What We Rebuilt in Its Place It started with a spike. At first, we thought it was client misuse-maybe a stale token, or a session expired mid-request. But then we saw it happening across environments. Across services. Even internal health checks began failing. Within minutes, the entire platform was pinned under a flood of failed auth handshakes. Every retry only made it worse. We were watching the real-time collapse of a system we thought was rock solid: our authentication service. Where Our Design Failed Us Our original auth service was meant to be simple. Stateless, REST-based, using JWTs signed by a central authority. Every service could validate tokens independently. That was the theory. But over time, we had quietly moved away from that ideal. Token validation drifted back into the auth service.

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Practical takeaway

The main idea behind When Our Authentication Service Collapsed-And What We Rebuilt in Its Place is to help teams move from broad theory to clear, repeatable decision making. When teams apply this thinking, they reduce ambiguity and focus on improvements that deliver measurable momentum.

Example scenario

Imagine a team facing competing priorities. By applying the ideas in When Our Authentication Service Collapsed-And What We Rebuilt in Its Place, they can map dependencies, identify risks and choose the next move that produces progress without destabilizing their system.

Common mistakes to avoid

How to apply this in real work

Start by identifying where When Our Authentication Service Collapsed-And What We Rebuilt in Its Place already shows up in your architecture or delivery flow. Then pick one area where clarity would reduce friction. Apply the idea, measure its effect and share the learning.

Signs you are doing it correctly

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