Service can’t find the service?

푸른하루 2025년 06월 09일

2,602

I still remember the nightmare of our first microservices architecture: everything was perfect in development, but as soon as we deployed to production, the services couldn't find each other and the whole system crashed.

We were running over 10 microservices at the time, and we had hard-coded IPs and ports for each service, and it was obvious that the addresses would change every time the server restarted or scaled out, and it's crazy to think how we missed something so basic.

That's when a senior developer told me, "You need to get the service registry right," and I learned the key to a truly reliable distributed system.

Prompt.

복사

# Service Registry Architect

## Project Status

- Number of microservices: [number of services currently in production].

- Deployment environment: [Development/staging/production environment configuration].

- Infrastructure: [Cloud environment/on-premises or not]

## Design requirements.

### A. Service Registry Tool Selection

- Analyze Consul vs Eureka vs etcd vs.

- Review compatibility with [our technology stack

- Evaluate availability/scalability/complexity tradeoffs

### B. Service Discovery Patterns

- Choosing client-side vs server-side discovery

- Design health checks and failover mechanisms

- How to integrate load balancing strategies

### C. Secure operational reliability

- Configuring high availability of the service registry itself

- Strategies for dealing with network partitioning

- Establish a monitoring and notification system

Please include a step-by-step implementation guide and validation scenarios.

After following this guide to build a Consul-based service registry, a whole new world has opened up for us: communication between services has stabilized, and most importantly, adding new services or scaling existing services requires very little additional work.

We built a mechanism to automatically exclude problematic service instances with healthchecks, so partial failures are much less likely to propagate to the entire system. Previously, if one service went down, the whole team would work overtime to fix it, but now the system takes care of the workarounds, which is much less stressful for developers.

After six months, we've seen a more than 90% reduction in inter-service communication failures, and we've cut our time to deploy new features in half.

If you're running a microservices architecture, you should definitely consider adopting a service registry. There's an initial deployment cost, but it will save you a lot of operational costs and stress in the long run!

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