Grails on Groovy - Clear and Flush Current Hibernate Session Data and Evict All Query Cache Data | Clearing Hibernate Query Cache in Grails

Hibernate already has support for query cache. And we know that when we perform a big task there are huge number queries remain in our cache factory. And more important that in most cases we don't need this caches so as a result cache factory getting full with unusual cache data. This could be a performance issue - so it's better we clear cache on our own responsibility after a big task completed.

Below are the procedure to flush and clear current session (hibernate session) data so that cache factory have enough space for further execution.

import org.hibernate.SessionFactory import grails.util.Holders private static SessionFactory _sessionFactory static Boolean flushAndClearCache() { try { sessionFactory.currentSession.flush() sessionFactory.currentSession.clear() sessionFactory.getCache().evictEntityRegions() sessionFactory.getCache().evictCollectionRegions() sessionFactory.getCache().evictDefaultQueryRegion() sessionFactory.getCache().evictQueryRegions() return true } catch (Throwable ex) { log.error(ex.ex) return false } } static <T> T getBean(Class<T> requiredType) { try { return Holders.applicationContext.getBean(requiredType) } catch (Throwable e) { return null } } static SessionFactory getSessionFactory() { _sessionFactory = _sessionFactory ?: (_sessionFactory = getBean(SessionFactory)) }

Windows CMD, Clear All Browsers Cache & Everything

::@ECHO OFF
::cscript.exe "Test.vbs"
::pause
::exit;

@echo off

rem IE
taskkill /F /IM iexplore.exe
start "" "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 255

:: Parse the Local AppData sub path
call :Expand xAppData "%%LocalAppData:%UserProfile%=%%"

set "xFirefox=\mozilla\firefox\profiles"
set "xChrome=\google\chrome\user data"
set "xOpera1=\Local\Opera\Opera"
set "xOpera2=\Roaming\Opera\Opera"

:: Start at the User directory
pushd "%UserProfile%\.."

taskkill /F /IM firefox.exe
taskkill /F /IM chrome.exe
taskkill /F /IM opera.exe

:: Loop through the Users
for /D %%D in (*) do if exist "%%~fD%xAppData%" (
    rem Check for Firefox
    if exist "%%~fD%xAppData%%xFirefox%" (
        rd /s /q "%%~fD%xAppData%%xFirefox%"
    )

    rem Check for Chrome
    if exist "%%~fD%xAppData%%xChrome%" (
        rd /s /q "%%~fD%xAppData%%xChrome%"
    )
 
 rem Check for Opera
    if exist "%%~fD%xAppData%%xOpera1%" (
        rd /s /q "%%~fD%xAppData%%xOpera1%"
    )
 if exist "%%~fD%xAppData%%xOpera2%" (
        rd /s /q "%%~fD%xAppData%%xOpera2%"
    )
)
popd
goto End


::::::::::::::::::::::::::::::
:Expand <Variable> <Value>
if not "%~1"=="" set "%~1=%~2"
goto :eof


:End
endlocal

VBScript Clear Google Chrome Cache, History & Everything

Option Explicit
Dim FileSystemObject, RootFolder, UserName, File
Set FileSystemObject = CreateObject("Scripting.FileSystemObject")

UserName = CreateObject("WScript.Network").UserName
RootFolder = "C:\Users\" & UserName & "\AppData\Local\Google\Chrome\User Data\"
 
ProcessTerminate "chrome.exe"
DeleteFileFromFolder RootFolder

Sub DeleteFileFromFolder(Path)
    For Each File In FileSystemObject.GetFolder(Path).Files
        DeleteAllow File
    Next
    For Each File In FileSystemObject.GetFolder(Path).SubFolders
        DeleteFileFromFolder File.Path
    Next
End Sub

Sub DeleteAllow(File)
    'Bookmarks remain same
    If NOT(StrComp(Left(File.Name, 9), "Bookmarks", vbTextCompare)) = 0 Then
        Wscript.Echo File.Path + " Deleted"    
        On Error Resume Next
        FileSystemObject.DeleteFile File.Path, True
    End If
End Sub

Sub ProcessTerminate(Process)
    Const StrComputer = "." 
    Dim WshShell, ObjWMIService, ProcessList, ObjProcess
    Set WshShell = CreateObject("WScript.Shell")
    Set ObjWMIService = GetObject("winmgmts:" & "{impersonationLevel=impersonate}!\\" & StrComputer & "\root\cimv2")

    Set ProcessList = ObjWMIService.ExecQuery("SELECT * FROM Win32_Process WHERE Name = '" & Process & "'")
    For Each ObjProcess in ProcessList 
        On Error Resume Next
        ObjProcess.Terminate
        Wscript.Echo "Process Terminated, ProcessId=" & ObjProcess.ProcessId & " (" & ObjProcess.Name & ")" 
    Next
End Sub

Google Chrome - Clear Cache for Specific Website

1. First follow the image below:

 

2. Now click right button on reload button marked in below image and then click on "Empty Cache and Hard Reload"