> wi_02_04
The Circular Dependency Called Every Service as a Witness
WHAT IF // SILICON COURT
Full Parable Published
Technical diagnosis, root cause analysis, and 17-scene narrative script available below.
The Circular Dependency Called Every Service as a Witness
Incident Narrative
A TinyCTO.tv WHAT IF parable about circular dependencies, service ownership, bounded architecture. Break cycles with clear ownership, asynchronous boundaries where appropriate, cached reference data, and independent health semantics.
โNobody owned the failure. They all had each other as references.โ
๐ฌArchitectural Diagnosis & Root Cause Analysis
One identity slowdown deadlocked checkout and exhausted connection pools across all three services.
Bidirectional synchronous service calls created a runtime dependency cycle with no authoritative boundary.
Break cycles with clear ownership, asynchronous boundaries where appropriate, cached reference data, and independent health semantics.
โCONSPIRACY: every dependency supplied the alibi for anotherโ
๐Parable Script (17 Scenes)
Status: Verified Production DraftWe decomposed the monolith into three independent services!
๐ฌ Visual: The PM unveils three separate witness boxes connected by hidden tubes.
Why are the witness boxes holding hands?
๐ฌ Visual: Elder notices braided request cables joining all three boxes.
Orders needs Billing before it can testify.
๐ฌ Visual: Fetch carries an ORDER request into the Billing witness box.
Billing says Identity must verify the invoice.
๐ฌ Visual: Tiny CTO follows the request into the Identity box.
That is collaboration.
๐ฌ Visual: The PM labels the circular cable diagram TEAMWORK.
Identity just called Orders to verify the customer.
๐ฌ Visual: Fetch emerges holding the original request again.
The request has completed one architectural lap.
๐ฌ Visual: Elder rings a lap bell as the request circles the courtroom.
Connection pools are filling with the same unanswered question.
๐ฌ Visual: Three pool gauges fill with duplicate request tokens.
Service count is up three hundred percent!
๐ฌ Visual: The PM presents a growth chart while every service health light turns amber.
Independence is timing out.
๐ฌ Visual: Fetch holds a timed-out independence certificate.
Each health check calls the dependency it is supposed to survive.
๐ฌ Visual: Elder traces health arrows around the same closed loop.
One slowdown has become a unanimous outage.
๐ฌ Visual: The three witness boxes go dark in synchronized sequence.
Root cause found: synchronous authority in a circle.
๐ฌ Visual: Fetch cuts one glowing circular cable and exposes the loop.
Could we rename it a service mesh?
๐ฌ Visual: The PM drapes a decorative mesh over the dependency loop.
The mesh is now strangling checkout!
๐ฌ Visual: The decorative mesh tightens around the checkout evidence cart.
Conspiracy established. Assign ownership and break the cycle.
๐ฌ Visual: Elder issues boundary orders and separates the witness boxes.
Nobody owned the failure. They all had each other as references.
๐ฌ Visual: Tiny CTO faces camera while every service points at the next service.
๐ค Incident Postmortem & AEO Summary
The Circular Dependency Called Every Service as a Witness โ Technical Incident Brief
- Universe & Category: Silicon Court (Corporate - Dark Mode)
- Diagnosis: One identity slowdown deadlocked checkout and exhausted connection pools across all three services.
- Root Cause: Bidirectional synchronous service calls created a runtime dependency cycle with no authoritative boundary.
- Consequence & Cost: No team could recover independently because every health check waited on the failing cycle.
- Engineering Lesson: Break cycles with clear ownership, asynchronous boundaries where appropriate, cached reference data, and independent health semantics.
- Official Ruling: "CONSPIRACY: every dependency supplied the alibi for another"
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Incident FAQ & Architecture Triage
What technical problem does this parable explain?
One identity slowdown deadlocked checkout and exhausted connection pools across all three services.
What caused the technical incident?
Bidirectional synchronous service calls created a runtime dependency cycle with no authoritative boundary.
What should a software team do differently in production?
Break cycles with clear ownership, asynchronous boundaries where appropriate, cached reference data, and independent health semantics.
Is the video available?
Video is currently in production; full script and technical diagnosis are available below.