Ajax Action
a4j:ajax
a4j:commandButton
a4j:commandLink
a4j:actionListener
a4j:jsFunction
a4j:poll
a4j:push
a4j:param
Ajax Queue
a4j:queue
a4j:attachQueue
Ajax Output/Containers
a4j:outputPanel
a4j:status
a4j:region
a4j:mediaOutput
a4j:log
Validation
Client Side Validation
rich:graphValidator
rich:message
rich:messages
rich:notify
Data Iteration
a4j:repeat
rich:dataTable
rich:extendedDataTable
rich:collapsibleSubTable
rich:dataScroller
rich:list
rich:dataGrid
Trees
rich:tree
Tree Adaptors
Output/Panels
rich:chart
rich:panel
rich:togglePanel
rich:tabPanel
rich:collapsiblePanel
rich:accordion
rich:popupPanel
rich:progressBar
rich:tooltip
Menus
rich:panelMenu
rich:toolbar
rich:contextMenu
rich:dropDownMenu
Inputs
rich:autocomplete
rich:calendar
rich:editor
rich:inputNumberSlider
rich:inputNumberSpinner
rich:inplaceInput
rich:fileUpload
Selects
rich:inplaceSelect
rich:select
rich:orderingList
rich:pickList
Drag and Drop
Drag and Drop
Miscellaneous
Standard elements skinning
rich:placeholder
RichFaces functions
rich:focus
rich:componentControl
rich:hashParam
rich:hotKey
rich:jQuery

The a4j:attachQueue component allow you to funnel requests from specific components or behaviors through a 'named' queue (see queue example), but also allows you to override queue settings right from the component.

This sample shows how requestDelay can be changed for single component.

Note that when you are typing in the input - the status appears with a two seconds delay because the default queue contains requestDelay="2000". However when you are clicking the "submit" button - it appears immediately because requestDelay changed to 0 for the button.

Type there: