Golang Production Review Checklist
1. Architecture Review
System Design
Checklist:
[ ] Clear separation of concerns
[ ] Business logic separated from transport layer
[ ] Business logic separated from persistence layer
[ ] Dependency Injection used
[ ] SOLID principles applied appropriately
[ ] High cohesion
[ ] Low coupling
[ ] Scalable design
[ ] Maintainable design
Recommended Structure:
cmd/
├── api/
├── worker/
internal/
├── domain/
├── service/
├── repository/
├── transport/
│ ├── http/
│ ├── grpc/
│ └── middleware/
├── infrastructure/
├── config/
└── dto/
pkg/
tests/
Review Questions:
[ ] Can business logic run without HTTP?
[ ] Can business logic run without database?
[ ] Can business logic be reused?
2. Package Design Review
Checklist:
[ ] Single responsibility packages
[ ] No circular dependencies
[ ] Clear package boundaries
[ ] Minimal exported symbols
[ ] Internal package used correctly
Good:
user/
payment/
inventory/
notification/
Bad:
utils/
helpers/
common/
misc/
shared/
Review Questions:
[ ] Is package purpose obvious?
[ ] Can package be tested independently?
[ ] Is dependency direction correct?
3. Interface Review
Checklist:
[ ] Small interfaces
[ ] Consumer-defined interfaces
[ ] Interface segregation respected
[ ] Composition preferred
Good:
type UserRepository interface {
GetByID(ctx context.Context, id int64) (*User, error)
}
Bad:
type Repository interface {
Create()
Update()
Delete()
Search()
Login()
SendEmail()
}
Review Questions:
4. Error Handling Review
Checklist:
Good:
if err != nil {
return fmt.Errorf(
"create order: %w",
err,
)
}
Bad:
result, _ := repository.Get()
Review Questions:
5. Context Review
Checklist:
[ ] context.Context is first parameter
[ ] Context propagated correctly
[ ] Cancellation supported
[ ] Timeouts configured
Good:
func CreateOrder(
ctx context.Context,
req Request,
) error
Bad:
func CreateOrder(
req Request,
) error
Review Questions:
6. Concurrency Review
Goroutines
Checklist:
Example:
go func() {
select {
case <-ctx.Done():
return
}
}()
Channels
Checklist:
Review Questions:
7. HTTP API Review
Checklist:
[ ] Thin handlers
[ ] Validation performed
[ ] Business logic delegated
[ ] Consistent response format
[ ] Proper HTTP status codes
Good:
func CreateOrder(
w http.ResponseWriter,
r *http.Request,
) {
service.Create(...)
}
Bad:
func CreateOrder(
w http.ResponseWriter,
r *http.Request,
) {
// validation
// business logic
// SQL
}
Review Questions:
8. Database Review
Query Review
Checklist:
Good:
db.Query(
"SELECT * FROM users WHERE id=?",
id,
)
Bad:
query := fmt.Sprintf(
"SELECT * FROM users WHERE id=%d",
id,
)
Transaction Review
Checklist:
Review Questions:
9. Security Review
Authentication
Checklist:
Good:
bcrypt.GenerateFromPassword(...)
Bad:
md5.Sum(...)
Authorization
Secrets
Checklist:
Review Questions:
10. Logging Review
Checklist:
Good:
logger.Info(
"order_created",
"order_id",
orderID,
)
Bad:
fmt.Println(orderID)
Review Questions:
11. Configuration Review
Checklist:
Example:
APP_PORT
DB_HOST
DB_NAME
REDIS_HOST
Review Questions:
Checklist:
[ ] Memory allocations optimized
[ ] Database queries optimized
[ ] Connection pools configured
[ ] Caching strategy exists
Profiling
Checklist:
Commands:
go tool pprof
Review Questions:
13. Testing Review
Unit Tests
Checklist:
[ ] Service tests
[ ] Domain tests
[ ] Business rule tests
Integration Tests
Checklist:
[ ] Database tests
-
[ ] Queue tests
Coverage
Targets:
[ ] Critical logic > 90%
[ ] Overall > 70%
Commands:
go test ./...
go test -cover ./...
Review Questions:
14. Queue & Worker Review
Checklist:
Review Questions:
15. Observability Review
Metrics
Checklist:
[ ] Request count
[ ] Error rate
[ ] Latency
[ ] Business metrics
Tracing
Checklist:
[ ] Distributed tracing
[ ] Request tracing
[ ] Context propagation
Review Questions:
16. Cloud Native Review
Checklist:
[ ] Stateless design
[ ] Health endpoint
[ ] Readiness endpoint
[ ] Metrics endpoint
[ ] Graceful shutdown
Endpoints:
/health
/ready
/metrics
Review Questions:
17. Graceful Shutdown Review
Checklist:
Example:
server.Shutdown(ctx)
Review Questions:
18. CI/CD Review
Checklist:
Pipeline:
Git Push
↓
gofmt
↓
golangci-lint
↓
Unit Tests
↓
Build
↓
Docker Build
↓
Deploy
Review Questions:
19. Production Readiness
Reliability
Scalability
Checklist:
[ ] Horizontal scaling
[ ] Shared cache
[ ] Shared storage
[ ] Queue scaling
Disaster Recovery
Checklist:
[ ] Backup strategy
[ ] Restore procedures
[ ] Runbooks documented
Review Questions:
20. Senior Golang Final Review
[ ] Is code simple?
[ ] Is business logic framework-independent?
[ ] Are interfaces small?
[ ] Is context propagated correctly?
[ ] Are errors handled properly?
[ ] Are goroutines leak-free?
[ ] Is application observable?
[ ] Can service scale horizontally?
[ ] Can another engineer maintain it in 6 months?
[ ] Will this wake me up at 3 AM?
If all answers are YES, the Golang application is Production Ready.
Golang Maturity Score
| Category | Target |
| Architecture | 9/10 |
| Package Design | 9/10 |
| Concurrency | 9/10 |
| Security | 9/10 |
| Performance | 9/10 |
| Testing | 8/10+ |
| Scalability | 9/10 |
| Observability | 8/10+ |
| Maintainability | 9/10 |
Overall Production Grade Target: >= 85%