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PDF 'Itext User Agent' cache size and how to clear it


PDF 'Itext User Agent' cache size and how to clear it

By : user2172392
Date : October 23 2020, 08:10 PM
Hope this helps
Summary: The solution the OP probably used the one at the bottom no. (3): Disabling the cache via commandline parameter/config file.
code :


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how to purge nginx cache which vary by user agent

how to purge nginx cache which vary by user agent


By : Sujan Dhali
Date : March 29 2020, 07:55 AM
this will help a page has tow cache. one for pc web browser, another for mobile browser. , I have resolved this question.
follow is my solution.
code :
map $http_user_agent $device_type {
    default 'pc';
    ~(iPhone|Android|IEMobile|Balckberry) 'mobile';
}
  #fast cgi cache def
  fastcgi_cache_path  /data0/nginx-1.2.6/cache levels=1:2 keys_zone=nginx_webpy_cache:30m inactive=1d;

  fastcgi_temp_path /data0/nginx-1.2.6/cache/temp;

  fastcgi_cache_key "$scheme$request_method$host/$device_type$request_uri$is_args$args";
  #end
Glide, Clear cache when cache size is larger than 50 mb

Glide, Clear cache when cache size is larger than 50 mb


By : stanny
Date : March 29 2020, 07:55 AM
wish of those help Call Glide.get(context).clearDiskCache() on outside the UI thread. (also consider clearMemory() too to prevent surprises after clearing disk cache) this worked for me
code :
new Thread(new Runnable() {
          @Override
          public void run() {
             Glide.get(MainActivity.this).clearDiskCache();
          }
     }).start();
import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build;
import android.os.Environment;
import android.os.StatFs;
import android.util.Log;

import com.bumptech.glide.Glide;
import com.bumptech.glide.GlideBuilder;
import com.bumptech.glide.load.engine.cache.InternalCacheDiskCacheFactory;
import com.bumptech.glide.module.GlideModule;
import com.example.MyApplication;

import java.util.Locale;

public class LimitCacheSizeGlideModule implements GlideModule {
    // Modern device should have 8GB (=7.45GiB) or more!
    private static final int SMALL_INTERNAL_STORAGE_THRESHOLD_GIB = 6;
    private static final int DISK_CACHE_SIZE_FOR_SMALL_INTERNAL_STORAGE_MIB = 50*1024*1024;

    @Override
    public void applyOptions(Context context, GlideBuilder builder) {
        if (MyApplication.from(context).isTest()) return; // NOTE: StatFs will crash on robolectric.

        double totalGiB = getTotalBytesOfInternalStorage() / 1024.0 / 1024.0 / 1024.0;
        Log.i(String.format(Locale.US, "Internal Storage Size: %.1fGiB", totalGiB));
        if (totalGiB < SMALL_INTERNAL_STORAGE_THRESHOLD_GIB) {
            Log.i("Limiting image cache size to " + DISK_CACHE_SIZE_FOR_SMALL_INTERNAL_STORAGE_MIB + "MiB");
            builder.setDiskCache(new InternalCacheDiskCacheFactory(context, DISK_CACHE_SIZE_FOR_SMALL_INTERNAL_STORAGE_MIB));
        }
    }

    @Override
    public void registerComponents(Context context, Glide glide) {
    }

    private long getTotalBytesOfInternalStorage() {
        // http://stackoverflow.com/a/4595449/1474113
        StatFs stat = new StatFs(Environment.getDataDirectory().getPath());
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
            return getTotalBytesOfInternalStorageWithStatFs(stat);
        } else {
            return getTotalBytesOfInternalStorageWithStatFsPreJBMR2(stat);
        }
    }

    @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
    private long getTotalBytesOfInternalStorageWithStatFs(StatFs stat) {
        return stat.getTotalBytes();
    }

    @SuppressWarnings("deprecation")
    private long getTotalBytesOfInternalStorageWithStatFsPreJBMR2(StatFs stat) {
        return (long) stat.getBlockSize() * stat.getBlockCount();
    }
}
<manifest

    ...

    <application>

        <meta-data
            android:name="YourPackageNameHere.LimitCacheSizeGlideModule"
            android:value="GlideModule" />

        ...

    </application>
</manifest>    
Clear user data or Clear cache on Phonegap android

Clear user data or Clear cache on Phonegap android


By : mlgx
Date : March 29 2020, 07:55 AM
hope this fix your issue Add below code in your oncreate() method of activity file after loading index.html :
Laravel 5.4 - php artisan cache:clear does not clear cache files when using 'file' cache driver

Laravel 5.4 - php artisan cache:clear does not clear cache files when using 'file' cache driver


By : василий Антохи
Date : March 29 2020, 07:55 AM
may help you . Update Jan 2020
Seems there is an easy solution to all of this. Using this answer https://serverfault.com/a/96349 as a reference, you can set the gid bit on the parent folder so that all subsequent files & folders created under ./storage/* are writable by anyone in the correct group regardless of who created them; thereby overcoming the group security permission issues as explained below.
AWS CloudFront - forward User-Agent but don't cache against it

AWS CloudFront - forward User-Agent but don't cache against it


By : Viktor Tempelfeld
Date : March 29 2020, 07:55 AM
will help you You can use Lambda@Edge function (https://docs.aws.amazon.com/lambda/latest/dg/lambda-edge.html) assigned to your CloudFront distribution. You would need two functions:
Viewer-Request event handler, that will read User-Agent header and copy it to e.g. X-My-User-Agent. Viewer-Request handler is invoked before the request from the client reaches your Cloudfront Distribution. Origin-Request event handler, that will read X-My-User-Agent and replace User-Agent. Origin-Request handler is invoked when Cloudfront did not find requested page in its cache and sends the request to the origin.
code :
'use strict';

exports.handler = (event, context, callback) => {
  const request = event.Records[0].cf.request;
  const headers = request.headers;
  const customUserAgentHeaderName = 'X-My-User-Agent';
  const userAgent = headers['user-agent'][0].value;


  headers[customUserAgentHeaderName.toLowerCase()] = [
    {
      key: customUserAgentHeaderName,
      value: userAgent
    }
  ];


  callback(null, request);
};
'use strict';

exports.handler = (event, context, callback) => {
  const request = event.Records[0].cf.request;
  const headers = request.headers;
  const customUserAgentHeaderName = 'X-My-User-Agent';
  const realUserAgent = headers[customUserAgentHeaderName.toLowerCase()][0].value;

  headers['user-agent'] = [
    {
      key: 'User-Agent',
      value: realUserAgent
    }
  ];


  callback(null, request);
};
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