# CacheController

> Allows you to flush cache.

[API reference](/docs/api/index.md) › [yii](/docs/api/yii/index.md) › [console](/docs/api/yii/console/index.md) › [controllers](/docs/api/yii/console/controllers/index.md) › CacheController

| class | `yii\console\controllers\CacheController` |
| --- | --- |
| Extends | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) » [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) » [`yii\base\Component`](/docs/api/yii/base/component/index.md) » [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| Implements | [`yii\base\ViewContextInterface`](/docs/api/yii/base/viewcontextinterface/index.md), [`yii\base\Configurable`](/docs/api/yii/base/configurable/index.md) |
| Since | 2.0 |
| Source | [`framework/console/controllers/CacheController.php`](https://github.com/yiisoft/yii2/blob/22.0/framework/console/controllers/CacheController.php#L52) |

Allows you to flush cache.

see list of available components to flush:

    yii cache

flush particular components specified by their names:

    yii cache/flush first second third

flush all cache components that can be found in the system

    yii cache/flush-all

Note that the command uses cache components defined in your console application configuration file. If components
configured are different from web application, web application cache won't be cleared. In order to fix it please
duplicate web application cache components in console config. You can use any component names.

APCu is not shared between PHP processes so flushing cache from command line has no effect on web.
Flushing web cache could be either done by:

- Putting a php file under web root and calling it via HTTP
- Using [Cachetool](https://gordalina.github.io/cachetool/)

## Properties

| Property | Type | Description | Defined by |
| --- | --- | --- | --- |
| <span id="property-action"></span>[`$action`](/docs/api/yii/base/controller/index.md#property-action) | [`yii\base\Action`](/docs/api/yii/base/action/index.md)`<static>\|null` | The action that is currently being executed. Default: `null`. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="property-behaviors"></span>[`$behaviors`](/docs/api/yii/base/component/index.md#property-behaviors) read-only | `array<`[`yii\base\Behavior`](/docs/api/yii/base/behavior/index.md)`<static>>` | List of behaviors attached to this component. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="property-color"></span>[`$color`](/docs/api/yii/console/controller/index.md#property-color) | `bool\|null` | Whether to enable ANSI color in the output. Default: `null`. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="property-defaultAction"></span>[`$defaultAction`](/docs/api/yii/base/controller/index.md#property-defaultAction) | `string` | The ID of the action that is used when the action ID is not specified in the request. Default: `'index'`. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="property-help"></span>[`$help`](/docs/api/yii/console/controller/index.md#property-help) | `bool` | Whether to display help information about current command. Default: `false`. Available since 2.0.10. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="property-helpSummary"></span>[`$helpSummary`](/docs/api/yii/console/controller/index.md#property-helpSummary) read-only | `string` | The one-line short summary describing this controller. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="property-id"></span>[`$id`](/docs/api/yii/base/controller/index.md#property-id) | `string` | The ID of this controller. Default: `null`. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="property-interactive"></span>[`$interactive`](/docs/api/yii/console/controller/index.md#property-interactive) | `bool` | Whether to run the command interactively. Default: `true`. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="property-layout"></span>[`$layout`](/docs/api/yii/base/controller/index.md#property-layout) | `string\|null\|false` | The name of the layout to be applied to this controller's views. Default: `null`. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="property-module"></span>[`$module`](/docs/api/yii/base/controller/index.md#property-module) | `yii\base\T` | The module that this controller belongs to. Default: `null`. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="property-modules"></span>[`$modules`](/docs/api/yii/base/controller/index.md#property-modules) read-only | [`yii\base\Module`](/docs/api/yii/base/module/index.md)`[]` | All ancestor modules that this controller is located within. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="property-passedOptions"></span>[`$passedOptions`](/docs/api/yii/console/controller/index.md#property-passedOptions) read-only | `array` | The names of the options passed during execution. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="property-passedOptionValues"></span>[`$passedOptionValues`](/docs/api/yii/console/controller/index.md#property-passedOptionValues) read-only | `array` | The properties corresponding to the passed options. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="property-request"></span>[`$request`](/docs/api/yii/console/controller/index.md#property-request) | [`yii\console\Request`](/docs/api/yii/console/request/index.md) | The request object. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="property-response"></span>[`$response`](/docs/api/yii/console/controller/index.md#property-response) | [`yii\console\Response`](/docs/api/yii/console/response/index.md) | The response object. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="property-route"></span>[`$route`](/docs/api/yii/base/controller/index.md#property-route) read-only | `string` | The route (module ID, controller ID and action ID) of the current request. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="property-silentExitOnException"></span>[`$silentExitOnException`](/docs/api/yii/console/controller/index.md#property-silentExitOnException) | `bool\|null` | If true - script finish with `ExitCode::OK` in case of exception. false - `ExitCode::UNSPECIFIED_ERROR`. Default: `null`. Available since 2.0.36. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="property-uniqueId"></span>[`$uniqueId`](/docs/api/yii/base/controller/index.md#property-uniqueId) read-only | `string` | The controller ID that is prefixed with the module ID (if any). | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="property-view"></span>[`$view`](/docs/api/yii/base/controller/index.md#property-view) | [`yii\base\View`](/docs/api/yii/base/view/index.md)`\|`[`yii\web\View`](/docs/api/yii/web/view/index.md) | The view object that can be used to render views or view files. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="property-viewPath"></span>[`$viewPath`](/docs/api/yii/base/controller/index.md#property-viewPath) | `string` | The directory containing the view files for this controller. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |

## Methods

| Method | Description | Defined by |
| --- | --- | --- |
| <span id="method-__construct"></span>[`__construct()`](/docs/api/yii/base/controller/index.md#method-__construct) |  | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-__call"></span>[`__call()`](/docs/api/yii/base/component/index.md#method-__call) | Calls the named method which is not a class method. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-__clone"></span>[`__clone()`](/docs/api/yii/base/component/index.md#method-__clone) | This method is called after the object is created by cloning an existing one. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-__get"></span>[`__get()`](/docs/api/yii/base/component/index.md#method-__get) | Returns the value of a component property. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-__isset"></span>[`__isset()`](/docs/api/yii/base/component/index.md#method-__isset) | Checks if a property is set, i.e. defined and not null. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-__set"></span>[`__set()`](/docs/api/yii/base/component/index.md#method-__set) | Sets the value of a component property. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-__unset"></span>[`__unset()`](/docs/api/yii/base/component/index.md#method-__unset) | Sets a component property to be null. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| [`actionFlush()`](#method-actionFlush) | Flushes given cache components. | `CacheController` |
| [`actionFlushAll()`](#method-actionFlushAll) | Flushes all caches registered in the system. | `CacheController` |
| [`actionFlushSchema()`](#method-actionFlushSchema) | Clears DB schema cache for a given connection component. | `CacheController` |
| [`actionIndex()`](#method-actionIndex) | Lists the caches that can be flushed. | `CacheController` |
| <span id="method-actions"></span>[`actions()`](/docs/api/yii/base/controller/index.md#method-actions) | Declares external actions for the controller. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-afterAction"></span>[`afterAction()`](/docs/api/yii/base/controller/index.md#method-afterAction) | This method is invoked right after an action is executed. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-ansiFormat"></span>[`ansiFormat()`](/docs/api/yii/console/controller/index.md#method-ansiFormat) | Formats a string with ANSI codes. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-attachBehavior"></span>[`attachBehavior()`](/docs/api/yii/base/component/index.md#method-attachBehavior) | Attaches a behavior to this component. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-attachBehaviors"></span>[`attachBehaviors()`](/docs/api/yii/base/component/index.md#method-attachBehaviors) | Attaches a list of behaviors to the component. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-beforeAction"></span>[`beforeAction()`](/docs/api/yii/console/controller/index.md#method-beforeAction) | This method is invoked right before an action is executed. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-behaviors"></span>[`behaviors()`](/docs/api/yii/base/component/index.md#method-behaviors) | Returns a list of behaviors that this component should behave as. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-bindActionParams"></span>[`bindActionParams()`](/docs/api/yii/console/controller/index.md#method-bindActionParams) | Binds the parameters to the action. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-canGetProperty"></span>[`canGetProperty()`](/docs/api/yii/base/component/index.md#method-canGetProperty) | Returns a value indicating whether a property can be read. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-canSetProperty"></span>[`canSetProperty()`](/docs/api/yii/base/component/index.md#method-canSetProperty) | Returns a value indicating whether a property can be set. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-className"></span>[`className()`](/docs/api/yii/base/baseobject/index.md#method-className) static | Returns the fully qualified name of this class. | [`yii\base\BaseObject`](/docs/api/yii/base/baseobject/index.md) |
| <span id="method-confirm"></span>[`confirm()`](/docs/api/yii/console/controller/index.md#method-confirm) | Asks user to confirm by typing y or n. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-createAction"></span>[`createAction()`](/docs/api/yii/base/controller/index.md#method-createAction) | Creates an action based on the given action ID. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-detachBehavior"></span>[`detachBehavior()`](/docs/api/yii/base/component/index.md#method-detachBehavior) | Detaches a behavior from the component. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-detachBehaviors"></span>[`detachBehaviors()`](/docs/api/yii/base/component/index.md#method-detachBehaviors) | Detaches all behaviors from the component. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-ensureBehaviors"></span>[`ensureBehaviors()`](/docs/api/yii/base/component/index.md#method-ensureBehaviors) | Makes sure that the behaviors declared in [`behaviors()`](/docs/api/yii/base/component/index.md#method-behaviors) are attached to this component. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-findLayoutFile"></span>[`findLayoutFile()`](/docs/api/yii/base/controller/index.md#method-findLayoutFile) | Finds the applicable layout file. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-getActionArgsHelp"></span>[`getActionArgsHelp()`](/docs/api/yii/console/controller/index.md#method-getActionArgsHelp) | Returns the help information for the anonymous arguments for the action. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-getActionHelp"></span>[`getActionHelp()`](/docs/api/yii/console/controller/index.md#method-getActionHelp) | Returns the detailed help information for the specified action. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-getActionHelpSummary"></span>[`getActionHelpSummary()`](/docs/api/yii/console/controller/index.md#method-getActionHelpSummary) | Returns a one-line short summary describing the specified action. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-getActionOptionsHelp"></span>[`getActionOptionsHelp()`](/docs/api/yii/console/controller/index.md#method-getActionOptionsHelp) | Returns the help information for the options for the action. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-getBehavior"></span>[`getBehavior()`](/docs/api/yii/base/component/index.md#method-getBehavior) | Returns the named behavior object. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-getBehaviors"></span>[`getBehaviors()`](/docs/api/yii/base/component/index.md#method-getBehaviors) | Returns all behaviors attached to this component. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-getHelp"></span>[`getHelp()`](/docs/api/yii/console/controller/index.md#method-getHelp) | Returns help information for this controller. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-getHelpSummary"></span>[`getHelpSummary()`](/docs/api/yii/console/controller/index.md#method-getHelpSummary) | Returns one-line short summary describing this controller. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-getModules"></span>[`getModules()`](/docs/api/yii/base/controller/index.md#method-getModules) | Returns all ancestor modules of this controller. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-getOptionValues"></span>[`getOptionValues()`](/docs/api/yii/console/controller/index.md#method-getOptionValues) | Returns properties corresponding to the options for the action id Child classes may override this method to specify possible properties. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-getPassedOptions"></span>[`getPassedOptions()`](/docs/api/yii/console/controller/index.md#method-getPassedOptions) | Returns the names of valid options passed during execution. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-getPassedOptionValues"></span>[`getPassedOptionValues()`](/docs/api/yii/console/controller/index.md#method-getPassedOptionValues) | Returns the properties corresponding to the passed options. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-getRoute"></span>[`getRoute()`](/docs/api/yii/base/controller/index.md#method-getRoute) | Returns the route of the current request. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-getUniqueId"></span>[`getUniqueId()`](/docs/api/yii/base/controller/index.md#method-getUniqueId) | Returns the unique ID of the controller. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-getView"></span>[`getView()`](/docs/api/yii/base/controller/index.md#method-getView) | Returns the view object that can be used to render views or view files. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-getViewPath"></span>[`getViewPath()`](/docs/api/yii/base/controller/index.md#method-getViewPath) | Returns the directory containing view files for this controller. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-hasEventHandlers"></span>[`hasEventHandlers()`](/docs/api/yii/base/component/index.md#method-hasEventHandlers) | Returns a value indicating whether there is any handler attached to the named event. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-hasMethod"></span>[`hasMethod()`](/docs/api/yii/base/component/index.md#method-hasMethod) | Returns a value indicating whether a method is defined. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-hasProperty"></span>[`hasProperty()`](/docs/api/yii/base/component/index.md#method-hasProperty) | Returns a value indicating whether a property is defined for this component. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-init"></span>[`init()`](/docs/api/yii/base/controller/index.md#method-init) | Initializes the object. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-isColorEnabled"></span>[`isColorEnabled()`](/docs/api/yii/console/controller/index.md#method-isColorEnabled) | Returns a value indicating whether ANSI color is enabled. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-off"></span>[`off()`](/docs/api/yii/base/component/index.md#method-off) | Detaches an existing event handler from this component. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-on"></span>[`on()`](/docs/api/yii/base/component/index.md#method-on) | Attaches an event handler to an event. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-optionAliases"></span>[`optionAliases()`](/docs/api/yii/console/controller/index.md#method-optionAliases) | Returns option alias names. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-options"></span>[`options()`](/docs/api/yii/console/controller/index.md#method-options) | Returns the names of valid options for the action (id) An option requires the existence of a public member variable whose name is the option name. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-prompt"></span>[`prompt()`](/docs/api/yii/console/controller/index.md#method-prompt) | Prompts the user for input and validates it. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-render"></span>[`render()`](/docs/api/yii/base/controller/index.md#method-render) | Renders a view and applies layout if available. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-renderContent"></span>[`renderContent()`](/docs/api/yii/base/controller/index.md#method-renderContent) | Renders a static string by applying a layout. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-renderFile"></span>[`renderFile()`](/docs/api/yii/base/controller/index.md#method-renderFile) | Renders a view file. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-renderPartial"></span>[`renderPartial()`](/docs/api/yii/base/controller/index.md#method-renderPartial) | Renders a view without applying layout. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-run"></span>[`run()`](/docs/api/yii/base/controller/index.md#method-run) | Runs a request specified in terms of a route. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-runAction"></span>[`runAction()`](/docs/api/yii/console/controller/index.md#method-runAction) | Runs an action with the specified action ID and parameters. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-select"></span>[`select()`](/docs/api/yii/console/controller/index.md#method-select) | Gives the user an option to choose from. Giving '?' as an input will show a list of options to choose from and their explanations. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-setView"></span>[`setView()`](/docs/api/yii/base/controller/index.md#method-setView) | Sets the view object to be used by this controller. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-setViewPath"></span>[`setViewPath()`](/docs/api/yii/base/controller/index.md#method-setViewPath) | Sets the directory that contains the view files. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-stderr"></span>[`stderr()`](/docs/api/yii/console/controller/index.md#method-stderr) | Prints a string to STDERR. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-stdout"></span>[`stdout()`](/docs/api/yii/console/controller/index.md#method-stdout) | Prints a string to STDOUT. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-trigger"></span>[`trigger()`](/docs/api/yii/base/component/index.md#method-trigger) | Triggers an event. | [`yii\base\Component`](/docs/api/yii/base/component/index.md) |
| <span id="method-bindInjectedParams"></span>[`bindInjectedParams()`](/docs/api/yii/base/controller/index.md#method-bindInjectedParams) protected final | Fills parameters based on types and names in action method signature. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="method-getActionMethodReflection"></span>[`getActionMethodReflection()`](/docs/api/yii/console/controller/index.md#method-getActionMethodReflection) protected |  | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-parseDocCommentDetail"></span>[`parseDocCommentDetail()`](/docs/api/yii/console/controller/index.md#method-parseDocCommentDetail) protected | Returns full description from the docblock. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-parseDocCommentSummary"></span>[`parseDocCommentSummary()`](/docs/api/yii/console/controller/index.md#method-parseDocCommentSummary) protected | Returns the first line of docblock. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |
| <span id="method-parseDocCommentTags"></span>[`parseDocCommentTags()`](/docs/api/yii/console/controller/index.md#method-parseDocCommentTags) protected | Parses the comment block into tags. | [`yii\console\Controller`](/docs/api/yii/console/controller/index.md) |

## Events

| Event | Type | Description | Defined by |
| --- | --- | --- | --- |
| <span id="event-EVENT_BEFORE_ACTION"></span>[`EVENT_BEFORE_ACTION`](/docs/api/yii/base/controller/index.md#event-EVENT_BEFORE_ACTION) | [`yii\base\ActionEvent`](/docs/api/yii/base/actionevent/index.md) | An event raised right before executing a controller action. Event name: `'beforeAction'`. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |
| <span id="event-EVENT_AFTER_ACTION"></span>[`EVENT_AFTER_ACTION`](/docs/api/yii/base/controller/index.md#event-EVENT_AFTER_ACTION) | [`yii\base\ActionEvent`](/docs/api/yii/base/actionevent/index.md) | An event raised right after executing a controller action. Event name: `'afterAction'`. | [`yii\base\Controller`](/docs/api/yii/base/controller/index.md) |

## Method details

### actionFlush() <span id="method-actionFlush"></span>

```php
public function actionFlush(): mixed
```

Flushes given cache components.

For example,

```
# flushes caches specified by their id: "first", "second", "third"
yii cache/flush first second third
```

**Returns**

`mixed`

### actionFlushAll() <span id="method-actionFlushAll"></span>

```php
public function actionFlushAll(): mixed
```

Flushes all caches registered in the system.

**Returns**

`mixed`

### actionFlushSchema() <span id="method-actionFlushSchema"></span>

```php
public function actionFlushSchema(string $db = 'db'): int
```

Clears DB schema cache for a given connection component.

```
# clears cache schema specified by component id: "db"
yii cache/flush-schema db
```

**Parameters**

| Parameter | Type | Description |
| --- | --- | --- |
| `$db` | `string` | Id connection component |

**Returns**

`int`: Exit code

**Throws**

- [`yii\console\Exception`](/docs/api/yii/console/exception/index.md)
- [`yii\base\InvalidConfigException`](/docs/api/yii/base/invalidconfigexception/index.md)

**Since**

2.0.1

### actionIndex() <span id="method-actionIndex"></span>

```php
public function actionIndex(): mixed
```

Lists the caches that can be flushed.

**Returns**

`mixed`