Architecture
Boundaries for identity, data, and failure are written before a feature lands in production. Clients, APIs, and domain logic stay replaceable.
ENGINEERING
技術で、より良い未来をつくる
Engineering for production.
We design systems to survive real users, real networks and real operational constraints.
SYSTEM
Architecture
A public view of how production systems are sliced. Not a leaked cluster map.
Clients
- Web
- iOS
- Android
Application
- Frontend
- API
- Realtime
Domain
- Business logic
- Identity
- Payments
- Operations
Data
- SQL
- Cache
- Object storage
Infrastructure
- Containers
- CI/CD
- Monitoring
- Edge / CDN
Frontend
Astro static shells, typed UI, and client scripts only at interaction boundaries. Measure LCP and INP on phones, not only desktops.
Backend
HTTP APIs with validation, auth, rate limits, and structured errors. No secrets in public pages.
Mobile
Mobile web and native clients share the same API contracts. Tap and trip flows are designed for one-handed use.
Infrastructure
Containers, CI/CD, and reverse proxies that can be rebuilt from config. Public docs omit private hostnames.
Security
Least privilege, encrypted transport, scoped credentials, reviewable history. Disclosures go to security@reiwasakura.tech.
Performance
Budgets for JS, fonts, and images. Prefer CSS/SVG diagrams over WebGL on marketing pages.
Observability
Health checks, logs, and audit trails on paths that take production traffic. This site does not fake uptime percentages.
AI
Bounded features with an evaluation path. Not unbounded chat widgets on every page.
Developer experience
Typed contracts, small diffs, and a staging environment before production.