Does Clear-Cache remove data from the database?

No. The Clear-Cache cmdlet only removes data currently residing in the NCache memory store. It does not delete or affect records in your backend database or persistent data source.

Does clearing the cache affect running applications?

Yes, clearing the cache while applications are running will cause immediate cache misses. Applications will then need to fetch fresh data from the database, which may result in a temporary increase in database load and latency until the cache is repopulated.

What is the difference between using -Force and not using it?

By default, Clear-Cache prompts for user confirmation before purging data. The -Force parameter bypasses this interaction, allowing the command to execute immediately. This is essential for automated maintenance scripts and CI/CD pipelines.

Clear-Cache

The Clear-Cache PowerShell cmdlet removes all cached items from a specified NCache cache instance. It allows safe removal of cache data with confirmation prompts, forceful execution when required, or selectively clearing of web-related content. This cmdlet is commonly used for cache maintenance, clearing stale or corrupted data, and resetting cache state during development, testing, or operational troubleshooting in distributed caching environments. It enables users to perform the following:

Clear cache and asks before clearing cache.
Clear cache forcefully.
Clear the web content only.

Note

This feature is also available in the NCache Open Source edition, please keep in mind that NCache Open Source has different parameters in some cmdlet instances.

Windows PowerShell
Linux CLI

Clear-Cache -Name [-Server] [-Force] [-ClearJSS] [-NoLogo] [-Credentials]

Examples

This command clears the demoCache after confirming whether the user wants to proceed.

Clear-Cache -Name demoCache

This command forcefully clears the cache and does not confirm with the user before clearing the cache.

Clear-Cache -Name demoCache -Force

This command clears JavaScript or CSS content from the cache.

Clear-Cache -Name demoCache -ClearJSS

This command clears the demoCache on the server 20.200.20.11.

Clear-Cache -Name demoCache -Server 20.200.20.11

This command clears the demoCache after confirming whether the user wants to proceed using security credentials.

Clear-Cache -Name demoCache -Credentials(Get-Credential john_smith)

Properties

Note

The parameters with asterisk (*) on their names are the required parameters and the rest are optional.

Parameters	Data Types	Description	Default Value
`-Name*`	`<String>`	Specifies the name of the cache which needs to be cleared. Note: The cache must already exist on the source server.	-
`-Force`	`<SwitchParameter>`	Providing this parameter cleans the cache forcefully, whereas in normal situations the user is asked before clearing the cache.	-
`-ClearJSS`	`<SwitchParameter>`	Clears only the JavaScript and CSS files from the cache. Note: This option is only available in Enterprise.	False
`-NoLogo`	`<SwitchParameter>`	Suppresses display of the logo banner.	False
`-Credentials`	`<pscredential>`	Specifies the user credentials required to authorize access for the specified operation. These credentials should belong to a user with the appropriate permissions at the node.	-
`-Server`	`<String>`	Specifies a server name where the NCache Service is running and a cache with the specified cache-name is registered.	IP of local machine

clear-cache -name [-server] [-force] [-clearjss] [-nologo] [-userid] [-password]

Examples

This command clears the demoCache after confirming whether the user wants to proceed.

clear-cache -name demoCache

This command forcefully clears the cache and does not confirm with the user before clearing the cache.

clear-cache -name demoCache -force

This command clears JavaScript or CSS content from the cache.

clear-cache -name demoCache -clearjss

This command clears the demoCache on the server 20.200.20.11.

clear-cache -name demoCache -server 20.200.20.11

This command clears the demoCache after confirming whether the user wants to proceed using security credentials.

clear-cache -name demoCache -userid john_smith -password

Properties

Note

The parameters with asterisk (*) on their names are the required parameters and the rest are optional.

Parameters	Data Types	Description	Default Value
`-name*`	`<String>`	Specifies the name of the cache which needs to be cleared. Note: The cache must already exist on the source server.	-
`-force`	`<SwitchParameter>`	Providing this parameter cleans the cache forcefully, whereas in normal situations the user is asked before clearing the cache.	-
`-clearjss`	`<SwitchParameter>`	Clears only the JavaScript and CSS files from the cache. Note: This option is only available in Enterprise.	False
`-nologo`	`<SwitchParameter>`	Suppresses display of the logo banner.	False
`-userid`	`<String>`	Specifies the user id used to authorize the user for this operation. It is required in case security is enabled on Cache Server. This user id must be the active directory user id.	-
`-password`	`<String>`	Specifies the password of the user that is used to authorize the user for this operation. It is required in case security is enabled on Cache Server. This password must be the same as the active directory user password.	-
`-server`	`<String>`	Specifies a server name where the NCache Service is running and a cache with the specified cache-name is registered.	IP of local machine

Clear-Cache

Note

Examples

Properties

Note

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