StayFlow – Multi-Channel Accommodation Management System for Ryokans & Boutique Hotels

Multi-Channel Accommodation Management System for Ryokans & Hotels

7 members × 6 months

PM / BA / Developers / DevOps / QC

Requirements Definition / Design / Development / Testing / Deployment / Maintenance & Operations

• Backend: Go (Gin) / WebSocket / PostgreSQL / Redis / RabbitMQ

• Frontend / Mobile: React / TypeScript / Flutter

• Payment Integration: PayPay / Suica / Credit Card / Bank Transfer

AWS (ECS / RDS / ElastiCache) / Terraform / Docker

Playwright / REST Assured / xUnit / k6

GitHub Actions / Datadog / PagerDuty

• Receives reservations from multiple OTAs (6 channels) via Webhooks

• Immediate inventory locking using SELECT FOR UPDATE

• Returns booking confirmation or rejection within 30 seconds

• Prevents double booking through real-time inventory synchronization

• Automatically calculates consumption tax, accommodation tax, and hot spring tax

• Supports complex tax logic based on region and pricing rules

• Ensures 100% calculation accuracy with 800+ automated test cases

• Unified management from reservation → check-in → payment → receipt issuance

• Supports foreign guest registration, group billing, and cancellation handling

• Load testing for 500 concurrent bookings (peak season simulation)

• CI/CD pipelines include strict test gates to ensure production quality

• Dedicated hotfix release path for rapid issue resolution

ECS Fargate / RDS Aurora / ElastiCache

GitHub Actions

Datadog / PagerDuty

• Reduced double bookings to zero (previously 2–3 cases/month)

• Achieved inventory synchronization within 30 seconds

• Fully automated and accurate tax calculations

• Reduced check-in time from 8 minutes to 3 minutes

• Streamlined front desk operations via pre-registration

• Enabled real-time coordination with housekeeping and on-site operations

• Reduced manual work by 76%

• Increased room occupancy rate by 19%

• Stable operations during peak periods (3,200 bookings in 3 days)

• Increased annual revenue by approx. ¥150 million (~$1M)

• Reduced monthly closing time from 4 days to 1 day

• Minimized compensation costs and brand risk

• Highly գնահատed for deep understanding of Japanese hospitality operations

• Strong accuracy in tax and regulatory compliance

• Stable operations with zero downtime

• High trust in automated testing framework