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go-zero

Microservice System

Microservice System

Section titled “Microservice System”

This advanced example shows how multiple go-zero services collaborate using etcd for service discovery.

Services Overview

Section titled “Services Overview”
order-api  ──→  order-rpc  ──→  MySQL
               ↓
          inventory-rpc  ──→  Redis
               ↓
          payment-rpc    ──→  MySQL

Prerequisites

Section titled “Prerequisites”
  • etcd running on localhost:2379
  • MySQL and Redis available

Service Configuration

Section titled “Service Configuration”

Each service registers itself with etcd:

etc/order-rpc.yaml
Name: order.rpc
ListenOn: 0.0.0.0:8080
Etcd:
  Hosts:
    - 127.0.0.1:2379
  Key: order.rpc

RPC Client Configuration

Section titled “RPC Client Configuration”
etc/order-api.yaml
OrderRpc:
  Etcd:
    Hosts:
      - 127.0.0.1:2379
    Key: order.rpc

Observability

Section titled “Observability”

Enable Prometheus metrics and Jaeger tracing:

Telemetry:
  Name: order-api
  Endpoint: http://jaeger:14268/api/traces
  Sampler: 1.0
  Batcher: jaeger

Key Concepts Demonstrated

Section titled “Key Concepts Demonstrated”
  • Service discovery via etcd
  • Multi-hop RPC call chains
  • Distributed tracing across services
  • Rate limiting and circuit breaking in action