ColdBox 6 Beta Released!

Luis Majano April 20, 2020

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Luis Majano

April 20, 2020

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We are so excited to bring you the first public beta of the next generation of ColdBox HMVC , version 6.0. This version has been in development for quite some time now and it is introducing some revolutionary new programming techniques for ColdFusion (CFML) developers. This major bump is a huge leap into modern programming and breaksthrough to the next generation of apps we are building at Ortus. Enjoy!


You can easily install this beta version by using the following CommandBox install string:

install coldbox@6.0.0-beta-snapshot

You can also continue to use the bleeding edge as we incorporate fixes and the latest updates to the core:

install coldbox@be

Bug Reporting & Collaboration

If you do find any bugs with this beta or just want to collaborate with more ideas for this release, please make sure you head out to our Jira instance at:

You can also contact us at the following Slack locations:

What's New With 6.0.0

ColdBox 6.0.0 is a major release for the ColdBox HMVC platform. It has some dramatic new features as we keep pushing for more modern and sustainable approaches to web development. We break down the major areas of development below and you can also find the full release notes per library at the end.


Engine Support


It is also yet another source code reduction due to the dropping of support for the following CFML Engines:

  • Adobe ColdFusion 11
  • Luce 4.5

The info-graphic above shows you the supporte engines the 6.x platform will support.


Asynchronous Programming


We have done a tremendous amount of work to expose all the async and parallel programming constructs in ColdBox to the entire framework so developers can leverage them. There is just so much we have done on this release for concurrency, task scheduling, and parallel programming to include in one page. So visit our Async Programming section to start delving into what we are lovingly calling cbFutures!

ColdBox Executors & Tasks

Thanks to our new futures approach, all major internal libraries (WireBox, CacheBox, LogBox, MVC) will leverage them for different tasks that require asynchronicity and scheduling. You will see a noticeble difference especially in the following areas:

  • Cache Reaping: All cache reaping is now done via a scheduled task running on specific frequencies
  • File Appenders: It uses an async schedule to stream log data to files instead of blocking operations for sending logs. It will use a logging in-memory queue to stream the log data to the file. So you can potentially send 10000 log events and eventually they will be streamed to disk.

What are ColdBox Futures?

A ColdBox future is used for async/parallel programming where you can register a task or multiple tasks that will execute in a non-blocking approach and trigger dependent computations which could also be asynchronous. This Future object can then be used to monitor the execution of the task and create rich completion/combining pipelines upon the results of such tasks. You can still use a get() blocking operation, but that is an over simplistic approach to async programming because you are ultimately blocking to get the result.

ColdBox futures are backed by Java's CompletableFuture API, so the majority of things will apply as well; even Java developers will feel at home. It will allow you to create rich pipelines for creating multiple Futures, chaining, composing and combining results.

// Parallel Executions
    () => "/somewhere" ),
    () => "/somewhereElse" ),
    () => "/another" )
).then( (results)=> logResults( results ) );

// Race Conditions, let the fastest dns resolve
var dnsServer = async().any( 
    () => dns1.resolve(),
    () => dns2.resolve()

// Process an incoming order
async().newFuture( () => orderService.getOrder() )
    .then( (order) => enrichOrder( order ) )
    .then( (order) => performPayment( order ) )
        (order) => dispatchOrder( order ), 
        async().getExecutor( "cpuIntensive" )
    .then( (order) => sendConfirmation( order ) );

// Combine Futures
var bmi = async().newFuture( () => weightService.getWeight( rc.person ) )
	    async().newFuture( () => heightService.getHeight( rc.person ) ),
        ( weight, height ) => {
            var heightInMeters = arguments.height/100;
            return arguments.weight / (heightInMeters * heightInMeters );

// Compose Futures with exceptions
    .newFuture( () => userService.getOrFail( ) )
    .thenCompose( ( user ) => creditService.getCreditRating( user ) )
    .then( (creditRating) => event.getResponse().setData( creditRating ) )
    .onException( (ex) => event.getResponse().setError( true ).setMessages( ex.toString() ) );


This new approach to creating async pipelines and parallel processing, will further create extensibility and robustness in your ColdBox applications.


RestHandler & ColdBox Response


After many years of adding a base handler and a response object to our application templates, we finally have integrated them into the core so developers can have even more support when building RESTFul services. This new rest handler will provide you with tons of utilities and approaches to make all of your RESTFul services:

  • Uniform
  • Consistent
  • A consistent and extensible response object
  • Error handling
  • Invalid Route handling
  • Much more

Base Class

New base class coldbox.system.RestHandler which you can inherit from or use our new restHandler annotation. This will give you access to our enhanced API utilities and the native response object via the request context's getResponse() method.

component extends="coldbox.system.RestHandler"{
  function index( event, rc, prc ){
      .setData( "Hello from restful Land" );

component resthandler{
  function index( event, rc, prc ){
      .setData( "Hello from restful Land" );

You can now build all of your api’s using the native response object like the rest templates, but now from the core directly. This Rest Handler gives you the following actions out of the box:

Core ActionsPurpose
aroundHandler()Wraps all rest actions uniformly to provide consistency and error trapping.
onError()An implicit error handler is provided just in case anything explodes in your restful actions. Sends an appropriate 500 error
onValidationException()Traps any {{ValidationException }}and makes sure it sends the appropriate 400 response with the invalid data. Useful for using cbValidation
onEntityNotFoundException()Traps any {{EntityNotFound }}or {{RecordNotFound }}exceptions and makes sure it send an appropriate 404 response. Useful for leveraging cborm or Quick ORM
onInvalidHTTPMethod()Traps any invalid HTTP method security exception and sends the appropriate 405 not allowed response
onMissingAction()Traps any invalid actions/resource called in your application and sends the appropriate 404 response
onAuthenticationFailure()Traps InvalidCredentials exceptions and sends the appropriate 403 invalid credentials response. If you are using cbSecurity it will also verify jwt token expiration and change the error messages accordingly.
onAuthorizationFailure()Action that can be used when a user does not have authorization or access to your application or code. Usually you will call this manually or from a security library like cbSecurity or cbGuard. It will send a 401 not authorized response.
onInvalidRoute()Action that can be used as a catch all from your router so it can catch all routes that are invalid. It will send a 404 response accordingly.
onExpectationFailed()Utility method for when an expectation of the request fails ( e.g. an expected parameter is not provided ). This action is called manually from your own handlers and it will output a 417 response back to the user.

AroundHandler in Detail

The aroundHandler() provided in the RestHandler will intercept all rest calls in order to provide consistency and uniformity to all your actions. It will try/catch for major known exceptions, time your requests, add extra output on development and much more. Here are a list of the features available to you:

  • Exception Handling
    • Automatic trapping of the following exceptions: InvalidCredentials, ValidationException, EntityNotFound, RecordNotFound
    • Automatic trapping of other exceptions
    • Logging automatically the exception with extra restful metadata
    • If in a development environment it will respond with much more information necessary for debugging both in the response object and headers
  • Development Responses
    • If you are in a development environment it will set the following headers for you:
      • x-current-route
      • x-current-routed-url
      • x-current-routed-namespace
      • x-current-event
  • Global Headers
    • The following headers are sent in each request
      • x-response-time : The time the request took in CF
      • x-cached-response : If the request is cached via event caching

The aroundHandler() is also smart in detecting the following outputs from a handler:

  • Handler return results
  • Setting a view or layout to render
  • Explicit renderData() calls

RequestContext Additions

  • getResponse()
    • Will get you the current prc.response object, if the object doesn’t exist, it will create it and set it for you
    • The core response object can be found here: coldbox.system.web.context.Response

Extending The RestHandler

If you would like to extend or modify the behavior of the core RestHandler then you will have to create your own base handler that inherits from it. Then all of your concrete handlers will inherit from your very own handler.

// BaseHandler
component extends="coldbox.system.Resthandler"{
  // Modify it here


// Then make your own handlers extend from it
component extends="BaseHandler"{


Extending The Response Object

The response object can be found here: coldbox.system.web.context.Response and the rest handler constructs it by calling the request context’s getResponse() method. The method verifies if there is a prc.response object and if it exists it returns it, else it creates a new one. So if you would like to use your very own, then just make sure that before the request you place your own response object in the prc scope.

Here is a simple example using a preProcess() interceptor in your config/Coldbox.cfc:

function preProcess( event, interceptData, rc, prc ){
  prc.response = wirebox.getInstance( "MyResponseObject" );

That’s it. Once that response object is in the prc scope, ColdBox will utilize it. Just make sure that your custom Response object satisfies the methods in the core one.


ColdBox Renderer Becomes a Singleton


The entire rendering mechanisms have changed in ColdBox 6 and we now support a singleton based approach to view rendering. It still allows for variable safety, but the way renderings in ColdBox 6 are done are orders of magnitude faster than pre ColdBox 6 days. If you are using applications like ContentBox or Preside CMS or applications with tons of renderView() calls, your applications will fly now!


LogBox Config Path Init

If you are using LogBox in standalone mode, you can now construct it by passing the path to your LogBox configuration file or no path at all and we will construct LogBox with our new default config file to stream logs to the console.

application.logbox = new LogBox();

application.logbox = new LogBox( "config.MyLogBox" );

Release Notes

The full release notes per library can be found below.

ColdBox HMVC


  • [COLDBOX-48] - CacheBox creates multiple reap threads if the initial one take longer to complete than the reap frequency
  • [COLDBOX-339] - Error in AbstractFlashScope: key does't exists due to race conditions
  • [COLDBOX-822] - InvalidEvent is not working when set to a module event
  • [COLDBOX-829] - Stopgap for Lucee bug losing sessionCluster application setting
  • [COLDBOX-850] - XML Converter Updated invoke() to correctly call method by name

New Features

  • [COLDBOX-848] - Improve the bug reporting template for development based on whoops
  • [COLDBOX-849] - Incorporate Response and RestHandler into core
  • [COLDBOX-851] - All ColdBox apps get a coldbox-tasks scheduler executor for internal ColdBox services and scheduled tasks
  • [COLDBOX-852] - Updated the default ColdBox config appender to be to console instead of the dummy one
  • [COLDBOX-853] - ColdBox controller gets a reference to the AsyncManager and registers a new AsyncManager@coldbox wirebox mapping
  • [COLDBOX-855] - Allow for the application to declare it's executors via the new executors configuration element
  • [COLDBOX-856] - Allow for a module to declare it's executors via the new executors configuration element
  • [COLDBOX-858] - Introduction of async/parallel programming via cbPromises
  • [COLDBOX-859] - ability to do async scheduled tasks with new async cbpromises


  • [COLDBOX-830] - Update cachebox flash ram to standardize on unique key discovery
  • [COLDBOX-833] - Improvements to threading for interceptors and logging to avoid dumb Adobe duplicates
  • [COLDBOX-841] - Change announceInterception() and processState() to a single method name like: emit() or announce()
  • [COLDBOX-846] - Use relocate and setNextEvent status codes in getStatusCode for testing integration



  • [WIREBOX-90] - Fix constructor injection with virtual inheritance

New Features

  • [WIREBOX-91] - Injector's get a reference to an asyncManager and a task scheduler whether they are in ColdBox or non-ColdBox mode
  • [WIREBOX-92] - New executors dsl so you can easily inject executors ANYWHERE


  • [WIREBOX-88] - Improve WireBox error on Adobe CF


New Features

  • [CACHEBOX-24] - CacheBox reaper : migrate to a scheduled task via cbPromises
  • [CACHEBOX-60] - CacheFactory gets a reference to an asyncManager and a task scheduler whether they are in ColdBox or non-ColdBox mode



  • [LOGBOX-38] - Rotate property is defined but never used

New Features

  • [LOGBOX-5] - Allow config path as string in LogBox init (standalone)
  • [LOGBOX-11] - Allow standard appenders to be configured by name (instead of full path)
  • [LOGBOX-36] - Added an err() to abstract appenders for reporting to the error streams
  • [LOGBOX-42] - All appenders get a reference to the running LogBox instance
  • [LOGBOX-44] - Rolling appender now uses the new async schedulers to stream data to files


  • [LOGBOX-37] - Improvements to threading for logging to avoid dumb Adobe duplicates
  • [LOGBOX-41] - refactoring of internal utility closures to udfs to avoid ACF memory leaks: CF-420487

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