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Introduction
The Simple Platform is architected as a distributed system of highly specialized, event-driven microservices. This design ensures massive scalability, high availability, and strict security isolation, allowing the platform to handle enterprise-grade workloads with ease.
High-Level Architecture
At its core, the platform is a collection of services that work in concert to provide a unified, seamless experience. Each service has a distinct responsibility, from handling user identity to executing business logic and persisting data.
Core Services
Each component in the diagram is a standalone service with a specific, well-defined role.
Identity Service The security gatekeeper of the platform. It handles all authentication and authorization, issuing tenant-aware JSON Web Tokens (JWTs) to secure every API request.
Metadata Service The platform's control plane. It manages the lifecycle of tenants, provisions their isolated databases, and maintains core system configuration.
Data API Gateway The powerful engine for all data interactions. This service exposes the unified GraphQL API and contains our proprietary GraphQL-to-SQL compiler. It translates every query and mutation into highly optimized, secure SQL, abstracting away all database complexity from the developer.
Trigger Service The central nervous system of the platform. It listens for events from various sources — database changes, scheduled times, incoming webhooks — and triggers the appropriate business logic in response.
Logic Runtime The secure compute layer where all custom business logic executes. It runs Actions written in Go or TypeScript within a high-performance, sandboxed WebAssembly (WASM) environment.
Next Step
Now that you have a map of the services, let's trace a request through the system to see how they all work together.