(PowerShell) Fetch Web Pages from Local Cache

Demonstrates how to keep a local cache to avoid re-fetching web pages.

Note: This example requires Chilkat v9.5.0.91 or later.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$http = New-Object Chilkat.Http

# Define a cache directory and set the number of levels based on the anticipated size of the cache.
$http.AddCacheRoot("c:/AAWorkarea/httpCache/")

# up to 256 sub-directories under the cache root will be created as needed to hold cached GET's.
$http.NumCacheLevels = 1

# Tell the http object to fetch from the cache if possible.
$http.FetchFromCache = $true

# Also tell the http object to update the cache with newly fetched pages.
$http.UpdateCache = $true

# This HTTP GET should result in a cache file getting created.
$html = $http.QuickGetStr("https://www.google.com/")
if ($http.LastMethodSuccess -eq $false) {
    $($http.LastErrorText)
    exit
}

# The 1st GET was not from cache:
$("Fetched from cache: " + $http.LastFromCache)

# Fetching again will cause the page to be delivered from our local cache.
$html = $http.QuickGetStr("https://www.google.com/")
if ($http.LastMethodSuccess -eq $false) {
    $($http.LastErrorText)
    exit
}

# The 2nd GET is from cache:
$("Fetched from cache: " + $http.LastFromCache)