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You are here: Zend Server User Guide > Concepts > Server Setup Tab > Components

Components

The Components page is accessed from Server Setup | Components.

The Components page provides a convenient way to view and configure the components installed in your environment.

From this page, when applicable you can for each rule:

Turn On/Off - See table below for component specific information.
Clear - Empties cache information.
Configure Directives - Clicking this link directs you to a pre-filtered view of the directives (in Server Setup | Directives) that belong to the component.
View Description - at the end of each row of the table is a small icon that displays a tooltip that describes the component.

Additional actions for Specific rules:

Zend Debugger | Allowed Clients - Clicking this link directs you to Server Setup| Debugger where you can define the IP addresses that can or are prohibited to connect.
Zend Job QueueA simple and manageable system for off-loading tasks from the synchronous user request, to an external, parallel PHP process. | Queue Setup - Clicking this link directs you to Server Setup | Job Queue where you can define global Job Queue settings.
Zend Monitor | Monitoring Rules - Clicking this link directs you to Rule Management | Monitoring where you can define and activate monitor rule settings.
Zend Page Cache | Caching Rules - Clicking this link directs you to Rule Management | Caching where you can create and edit cache rules.

Note:

The following message appears when an option was not installed: "This component is not installed, for instructions see the Installation Guide". For Windows see Windows Installation, for DEB see DEB Installation and for RPM see RPM Installation.

The following components can be turned On/Off and configured as follows:

Component	Status	Comments
Working with Code Tracing	On - Activates code tracing for events configured to create a trace file and for manually generating a trace file. Off - Code tracing will not be available at all.
Working with Data Cache	On - Activates the Data Cache: Scripts that include the Data Cache API can run. Off - Disables the Data Cache: Scripts that include the Data Cache API cannot run.	This component stores information and therefore has an additional action for clearing information.
Working with the Debugger	On - Activates the Debugger for local and remote debugging with Zend Studio. Off - Disables the Debugger and does not permit debugging from Zend Studio.	The Debugger requires that you enter a list of IP addresses to allow, deny or permit remote debugging through a firewall. therefore it has an additional option for adding "Allowed Clients"
Working with Zend Download Server	On - The specified file extensions can off-loaded to a separate server. Off - All file downloads are handled by the same Web server that runs the PHP.	This component is not relevant for Windows OS users.
Working with Zend Guard Loader	On - Scripts encoded with Zend Guard run. Off - Scripts encoded with Zend Guard cannot run.
Working with Java Bridge	On - The Java Bridge runs: Scripts containing the Java Bridge API can run. Off - The Java Bridge stops running: Scripts containing the Java Bridge API cannot run.	This component can be restarted.
Creating a Job	On - Activates the job queue, only when this component is on will JobsJobs contain information about a specific Job (script to run) that you have set to run in your environment. run. This includes all Jobs either configured from the UI or by using the Job Queue API. Off - Jobs will not run.	If you are using the Job Queue API in your code, always make sure that this option is running otherwise it could cause your code to fail with an "undefined method" fatal error.
Working with Monitoring	On - Event information, as defined in Rule Management \| Monitor, is collected and displayed in Monitor \| EventsEvents are a result of the monitoring component checking your system and collecting information about a specific occurrence that indicates that your environment is displaying uncharacteristic behavior.. Off - Disables the Monitor component: Event information is not collected.
Working with Optimizer+	On - PHP is optimized. Off - PHP is not optimized.	This component stores information and therefore has an additional action for clearing information.
Working with Caching (Page)	On - Activates the page cache: URLs associated with caching rules are cached. Off - Disables the page cache: URLs marked to be cached are not cached.	This component stores information and therefore has an additional action for clearing information.
5250 Bridge	On - The 5250 Bridge runs: Scripts containing the 5250 Bridge API functions. Off - The 5250 Bridge stops running: Scripts containing the 5250 Bridge API cannot function.	If it is On, and there is a license, then it allows running multiple 5250 sessions. When there is no license, it allows running only one 5250 session.

Note:

For more information on adding additional components, see the Installation Guide.

The On/Off Status is used to configure your php.ini according to the components you want to load. If you intend to use functions related to a component in your code, verify that the extension is enabled and that the status is set to On.

Hovering with the curser over the Information icon displays a brief component description.