技術スタック
KGAが採用しているテクノロジーと、その選定理由
インフラ & クラウド
あらゆるワークロードに対応するスケーラブルな基盤
AWS
Primary cloud provider. We run ECS and Lambda for compute, S3 for object storage, and RDS for managed databases.
Google Cloud Platform
BigQuery for analytics data warehousing and Cloud Run for ML inference workloads that benefit from auto-scaling.
Cloudflare
Global CDN, DDoS protection, and Workers at the edge for low-latency routing and A/B testing logic.
Docker
Every service ships as a container. Consistent environments from local development through production.
Kubernetes
Production orchestration for large-scale client deployments requiring fine-grained scaling and service mesh.
Terraform
Infrastructure as Code for all environments. Reproducible, version-controlled, and peer-reviewed infra changes.
バックエンド & API
信頼性を重視した高性能サービス
Node.js / TypeScript
Primary backend runtime for API services, webhooks, and real-time applications. End-to-end type safety with shared types.
Python
AI/ML pipelines, data processing scripts, and automation tooling. Used with FastAPI for model-serving endpoints.
Go
High-performance microservices where latency and throughput matter -- ingestion pipelines, proxy layers, and CLI tools.
FastAPI
ML model serving with automatic OpenAPI docs. Handles inference requests with async support and Pydantic validation.
GraphQL
Flexible API layer for client dashboards. Reduces over-fetching and lets frontend teams iterate without backend changes.
gRPC
Internal service-to-service communication with protobuf schemas. Strong contracts, low overhead, bidirectional streaming.
フロントエンド
ユーザーに愛されるモダンなインターフェース
Next.js
Primary framework for all web applications. Server components, edge rendering, and built-in optimizations.
React / React Native
Shared component libraries across web and mobile. Native iOS and Android apps from a single codebase.
Svelte
Lightweight micro-frontends and embeddable widgets where bundle size is critical.
Tailwind CSS
Foundation of our design system. Utility-first approach ensures consistency and rapid iteration across projects.
Three.js
3D and VR experiences for product configurators, architectural walkthroughs, and interactive data visualizations.
AI & 機械学習
学習し、適応するインテリジェントシステム
OpenAI API
GPT-4o for natural language tasks, embeddings for semantic search, and fine-tuned models for domain-specific use cases.
Hugging Face
Open-source model hosting and inference. We run specialized NLP and vision models for clients with data residency requirements.
TensorFlow / PyTorch
Custom model training for computer vision, time-series forecasting, and recommendation engines.
LangChain
AI agent orchestration for complex multi-step workflows -- document Q&A, data extraction, and autonomous task execution.
Pinecone
Vector database powering RAG pipelines. Sub-50ms similarity search across millions of document embeddings.
Ollama
Local LLM deployment for air-gapped environments and clients who need on-premise AI with zero data egress.
データ & データベース
データ形状ごとに最適なストア
PostgreSQL
Primary relational database. ACID transactions, JSONB for flexible columns, and extensions like pgvector for embeddings.
Redis
In-memory caching, session management, rate limiting, and BullMQ job queues for background processing.
MongoDB
Document storage for content management, event sourcing, and schemas that evolve rapidly during product discovery.
InfluxDB
Time-series database for IoT sensor data, application metrics, and real-time dashboards with sub-second resolution.
Elasticsearch
Full-text search across product catalogs and documentation. Also powers centralized log aggregation and analysis.
BigQuery
Serverless data warehouse for analytics. Petabyte-scale SQL queries for business intelligence and reporting.
DevOps & モニタリング
素早く出荷し、すべてを観測する
GitHub Actions
CI/CD pipelines for build, test, and deployment. Matrix builds, reusable workflows, and environment-based approvals.
Grafana
Unified observability dashboards combining metrics, logs, and traces. Custom dashboards for every client project.
Prometheus
Metrics collection and alerting. PromQL-powered alerts feed into PagerDuty for on-call incident response.
Sentry
Error tracking with source maps and release tracking. Every unhandled exception gets triaged within minutes.
Datadog
APM and infrastructure monitoring. Distributed tracing across microservices to pinpoint latency bottlenecks.
PagerDuty
Incident management with escalation policies. On-call rotations ensure 24/7 coverage for critical systems.
セキュリティ
あらゆるレイヤーにおける多層防御
Vault
Centralized secrets management with dynamic credentials. Database passwords, API keys, and certificates rotate automatically.
Snyk
Continuous dependency scanning in CI. Vulnerabilities are flagged before they reach production.
OWASP ZAP
Automated security testing in staging environments. DAST scans run on every release candidate.
Let's Encrypt
Automated SSL/TLS certificate provisioning and renewal. Every endpoint is encrypted with zero manual intervention.
常に進化し続ける
最適なソリューションを提供するため、新しい技術を継続的に評価・採用しています。私たちのスタックには意見がありますが、独善的ではなく、問題ごとに最適なツールを選択します。