Designing a load balancer architecture is a critical step in building scalable, fault-tolerant systems. This visual tool lets you drag and drop components, connect services, and generate production-ready configuration files — all from your browser.
Whether you're building a simple HTTP setup or a complex microservices architecture with CDN, WAF, API gateways, and database clusters, this tool helps you visualize and validate your design before deploying. It generates configurations for NGINX, HAProxy, and Caddy, plus Docker Compose and Terraform templates.
Key Features
- Visual Canvas — Drag-and-drop nodes for load balancers, servers, databases, caches, CDNs, and more.
- 20 Architecture Presets — Start from battle-tested templates: microservices, Kubernetes, zero trust, GraphQL federation, and more.
- Real-Time Validation — Get warnings for single points of failure, missing health checks, and no SSL.
- Config Generation — Export NGINX, HAProxy, Caddy, Docker Compose, and Terraform configs.
- Cost Estimation — See estimated monthly costs for each component in your architecture.
- Technology Tooltips — Learn about each technology's strengths, weaknesses, and best use cases.
The Load Balancer Design Tool is a browser-based visual editor for planning and documenting your server infrastructure. Whether you are setting up a simple two-server HTTP backend or engineering a multi-region microservices platform, this tool lets you drag and drop real-world components onto a canvas, wire them together, and generate production-ready configuration files in seconds. It supports output for NGINX, HAProxy, Caddy, and F5 BIG-IP, plus Docker Compose and Terraform templates you can deploy immediately. If you also need to map out your database schema, try the ER Diagram Designer, or use the Architecture Diagram tool for broader system diagramming.
With 27 built-in architecture presets covering patterns like Kubernetes clusters, GraphQL Federation, zero-trust networking, AI inference pipelines, and event-driven systems, you never start from a blank canvas unless you want to. Each preset is a fully connected, annotated reference architecture you can customize to match your exact requirements. The real-time validation engine checks for single points of failure, missing health checks, absent SSL on public endpoints, and disconnected components, so you catch design flaws before they become production incidents. Pair it with the Subnet Calculator when planning IP address ranges, or run your domain through the SSL Certificate Checker to verify your TLS setup after deployment.
Everything runs entirely in your browser. No data is uploaded, no account is required, and there are no usage limits. You can export your architecture as a shareable link, a JSON snapshot for version control, a high-resolution PNG for documentation, or an animated GIF that walks through the topology. The integrated cost estimator gives you a monthly price breakdown for each component, helping you budget before you provision a single instance. For network-level planning, check the Port Reference Guide or perform a DNS Lookup to validate your domain configuration.