Architecture at a Glance
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flowchart TD
subgraph MicroserviceLayer [Microservice Layer]
msA[Spring Boot Microservices]
sidecar[Sidecar Wrapper]
end
subgraph MiddlewareLayer [Integration Layer]
luther[Luther NodeJS Service]
ca[Spring Boot CA]
end
subgraph BlockchainLayer [Hyperledger Fabric Network]
fabric[Fabric Peer Nodes]
chaincode[MSChainCC Go Chaincode]
kafka[Apache Kafka Orderer]
end
subgraph Infra [Cloud Infrastructure]
aws[AWS EC2 Nodes]
end
msA <--> sidecar
sidecar -- REST API Query --> luther
ca -- Issue/Revoke --> luther
luther -- Transaction SDK --> fabric
fabric -- Execute Logic --> chaincode
fabric -- Fault Tolerance --> kafka
MicroserviceLayer --- aws
MiddlewareLayer --- aws
BlockchainLayer --- aws
style MicroserviceLayer fill:#f5f5f5,stroke:#333,stroke-dasharray: 5 5
style MiddlewareLayer fill:#f5f5f5,stroke:#333,stroke-dasharray: 5 5
style BlockchainLayer fill:#f5f5f5,stroke:#333,stroke-dasharray: 5 5
style aws fill:#fff,stroke:#ff9900,stroke-width:2px
The Problem
Modern microservices rely on centralized authorities, creating single points of failure that leave service-to-service communication vulnerable to fraudulent certificates and man-in-the-middle attacks.
The Solution
We engineered a decentralized verification system using Hyperledger Fabric to record certificate lifecycles on an immutable ledger. By integrating a sidecar pattern, services independently validate certificate status in real time without external reliance.
The Impact
This architecture eliminates trust-based vulnerabilities, providing an auditable and resilient security layer that scales seamlessly across complex, distributed enterprise cloud environments.
