Backend Plugin Architecture

Purpose

Design extensible backend systems where third-party code (plugins) can be loaded dynamically at runtime through well-defined extension points and service provider interfaces (SPI). A plugin architecture enables the host application to be extended without modifying its core code.

Agent Protocol

Trigger

Exact user phrases: "plugin system", "plugin architecture", "extension point", "SPI", "service provider interface", "hot-plug", "modular design", "plugin loader", "extensible", "plugin API", "custom extension", "plug-in", "dynamic loading".

Input Context

• What the host application does and where extensibility is needed.
• Language/runtime (supports dynamic loading?).
• Security requirements for plugin isolation.

Output Artifact

Plugin system design or implementation code. No file unless requested.