Blog

Brad Wood

June 27, 2012

Spread the word


Share your thoughts

 

Many of you using models in your ColdBox app are familiar with how easy WireBox makes it to use the Singleton Pattern for components that are only created once in the life of your app.  
 
map("myService").to("path.to.myService").asSingleton();
 
or
 
component name="MyService" singleton {}
 
This can also be a bit of a pain when you are working on the code inside your singleton objects.  Any changes require you to re-create the singleton object which typically involves a reinit of the framework.  ColdBox has a handy setting for you to use on your development environment called singletonReload.  
 
wirebox = {
        singletonReload = true
};
 
This setting causes WireBox to flush your singleton mappings on every request so your changes show up instantly without having to reinit the entire framework.  Make sure this setting is always off in production!
 
Additional tip: Combine this setting with ColdBox's environement detection to automatically turn singletonReload on for your development environment, but off for production.
 
 
PS: If using Ajax intensive applications beware that concurrency for reloading and flushing the singleton objects is not guaranteed.
 

Add Your Comment

Recent Entries

12 Days of BoxLang - Day 4: TestBox

12 Days of BoxLang - Day 4: TestBox

Today we’re celebrating one of the most exciting new additions to the BoxLang ecosystem:

the TestBox BoxLang CLI Runner — a fast, native way to run your TestBox tests directly through the BoxLang Runtime. ⚡

No server required. No CommandBox needed. Just pure, ultra-fast BoxLang-powered testing from the command lineon Windows, Mac, and Linux.

If you’re building modern applications with BoxLang — web apps, CLIs, serverless functions, Android apps, or OS-level utilities — this new feature gives you a unified, flexible testing workflow you can run anywhere.

Victor Campos
Victor Campos
December 13, 2025
12 days of BoxLang - Day 3: SocketBox!

12 days of BoxLang - Day 3: SocketBox!

As BoxLang continues evolving into a modern, high-performance, JVM-based runtime, real-time communication becomes essential for the applications we all want to build: dashboards, collaboration tools, notifications, live feeds, multiplayer features, and more.

That’s where SocketBox steps in — the WebSocket upgrade listener built to work seamlessly with CommandBox and the BoxLang MiniServer. ⚡

Today, for Day 3, we’re highlighting how SocketBox supercharges BoxLang development by giving you fast, flexible, and framework-agnostic WebSocket capabilities.

Maria Jose Herrera
Maria Jose Herrera
December 12, 2025
12 Days of BoxLang - Day 2: CommandBox

12 Days of BoxLang - Day 2: CommandBox

BoxLang + CommandBox: The Enterprise Engine Behind Your Deployments

For Day 2 of our 12 Days of Christmas series, we’re diving into one of the most powerful parts of the BoxLang ecosystem: CommandBox the defacto enterprise servlet deployment platform for BoxLang.

If BoxLang is the language powering your applications, CommandBox is the engine room behind it all. ⚙️

Victor Campos
Victor Campos
December 11, 2025