substrateSH

substrateSH is a modular software framework designed to serve as a substrate for building and orchestrating service handlers in distributed applications. The framework emphasizes decoupling, allowing developers to package functionality as lightweight service handler units (SHs) that can be loaded, upgraded, or replaced at runtime without restarting the host application. SubstrateSH models the application as a set of interacting substrates and services, enabling dynamic composition, dependency resolution, and lifecycle management across heterogeneous environments such as data centers, edge devices, and cloud-native deployments.

Key features include a runtime that orchestrates SHs via a message bus, a component registry for discovering available SHs, a manifest-based dependency system, and a policy-driven security layer that governs access and execution. The API surface focuses on simplicity, providing hooks for initialization, event handling, and inter-component communication. The framework supports hot-loading of SHs, versioning, and rollback, as well as tooling for testing and monitoring.

substrateSH is open source and community-developed, with documentation and examples aimed at developers implementing modular services. It is designed to work across major operating systems with language bindings in systems programming languages and scripting languages. The project is maintained under a permissive license, encouraging contributions and integration into existing microservices or edge-computing stacks.