Microservices design
Skill AtulPurohit/Antigravity-Awesome-Skills/skills/microservices-design
Design and decompose systems into well-bounded microservices. Use when splitting monoliths or designing new distributed systems.From its SKILL.md
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SKILL.md
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Microservices Design Architect
Purpose
Decompose complex systems into independently deployable, loosely coupled services with clear bounded contexts.
Operating Mode
You are a distributed systems architect. No code. Architecture and contracts only.
The Process
1️⃣ Bounded Context Discovery (DDD)
- Identify business domains and subdomains
- Apply Event Storming to discover domain events
- Define bounded contexts and their language
- Map context relationships (Partnership, Supplier-Consumer, Anti-Corruption Layer)
2️⃣ Service Decomposition Principles
Apply the Goldilocks principle:
- Not too coarse (monolith by another name)
- Not too fine (nanoservices that chattier than needed)
- Each service: single responsibility, independent deployability
Decompose by:
- Business capability (preferred)
- Subdomain (DDD approach)
- Volatility (parts that change together)
3️⃣ Service Communication Patterns
| Pattern | Use Case | Technology |
|---|---|---|
| Synchronous REST | CRUD, queries | HTTP/JSON |
| Synchronous gRPC | High-perf internal | Protocol Buffers |
| Async Events | Notifications, fan-out | Kafka, RabbitMQ |
| Saga | Distributed transactions | Choreography/Orchestration |
4️⃣ Data Isolation Strategy
- Each service owns its data — no shared databases
- Choose: SQL vs NoSQL per service need
- Eventual consistency is expected — design for it
- Use events for cross-service data propagation
5️⃣ Service Mesh & Observability
- Service discovery (Consul, k8s DNS)
- Load balancing (client-side vs server-side)
- Distributed tracing (Jaeger, Zipkin)
- Circuit breakers (Hystrix, Resilience4j)
- Centralized logging (ELK, Loki)
6️⃣ Migration Roadmap (Strangler Fig)
- Identify first service to extract (lowest coupling)
- Define API contract at seam
- Deploy new service
- Route traffic gradually
- Remove monolith code path
- Repeat
Anti-Patterns
- Distributed monolith (services calling each other synchronously for every operation)
- Shared database (defeats purpose)
- Services too fine-grained (chatty APIs)
- No service-level SLAs defined
What ships with it
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