spring-loaded ☆

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Description:
Java agent to enable class reloading in a running JVM

Type: Formula | Latest Version: 1.2.6@0 | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: java hot-reload development agent reloading

Install: brew install spring-loaded

About:
SpringLoaded is a Java agent that enables hot-reloading of class definitions in a running JVM without requiring a restart. It intercepts class loading events and transparently retransforms bytecode to apply changes on the fly. This significantly accelerates the development feedback loop for server-side applications.

Key Features:

No-restart class reloading
Works with any JVM-based application
Bytecode instrumentation via Java agent
Integrates with build tools and IDEs

Use Cases:

Rapid iteration on backend services during development
Live patching of business logic in running applications

Alternatives:

JRebel – Commercial solution with broader framework support and IDE integration
DCEVM – Open-source JVM patch for enhanced hotswap with deeper bytecode modifications

Version History

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