Questions tagged [cache]

An intermediate data storage area with high performance but limited capacity. The term "cache" can refer to hardware cache (on a processor) or software cache (which stores commonly used values in a computer's memory).

Filter by
Sorted by
Tagged with
0
votes
0answers
3 views

How to implement an ephemeral file cache on a local file-system with off-the-shelf tools? [migrated]

Background I'm looking to implement a pass-through cache for a file-serving application. The users would make requests for files to the cache, if found, read from cache, otherwise the cache will fetch ...
0
votes
0answers
5 views

Server-side web cache with clean-up functonality [closed]

I just came across the concept of server-side caching in order to improve page speed. I see the point that this may be a huge speed improvement on its own. Given a website with lots of (unnecessary) ...
0
votes
1answer
9 views

View which Chrome extension uses a specific IndexedDB

In AppData/Local/Google/Chrome/User Data/Default/IndexedDB, I have one particular folder that takes up nearly 2GB. The folder is titled chrome-extension-.indexeddb.blob, so I have reason to believe ...
1
vote
0answers
20 views

Dropbox company download caching

Does anyone know If there is a way to create a local cache for Dropbox? I have multiple users in a local network and someone from the outside changes/uploads a file to dropbox, the sync party is on. ...
0
votes
0answers
7 views

How do I reduce the FS-CACHE cache partition safely?

I have an NFS mount cached using FS-CACHE and I want to reduce the size of the cache partition. I don't mind resetting the cache, so is it fine if I reformat/clear the partition before resizing it? Or ...
0
votes
0answers
10 views

Have recovered my deleted Skype message .cache files - now how do I read them

I recently managed to recover all my deleted Skype files from my Lenovo Thinkpad using a recovery software, and have saved them to an external drive. They are now there for the reading as .cache files:...
0
votes
0answers
90 views

Btrfs write speed very slow. In Linux how do I copy files using page cache?

I have 2 filesystems consisting of the same 15Tib size with both of them using 4 nvme ssd of the same model using btrfs based raid0 with all of the them plugged to a pci port. Both filesystem are ...
1
vote
1answer
72 views

How to disable Race Cache With Network (RCWN) in Firefox?

I just learned that Firefox has a cache racing feature, where if the disk cache is slow, it will fetch the data from server. However what Firefox developers did not consider is that some people may be ...
0
votes
0answers
20 views

Will the cache work after I format a USB HDD with ext4?

I have a USB HDD. With fdisk -l I get: Device Start End Sectors Size Type /dev/sdc1 34 262177 262144 128M Microsoft reserved /dev/sdc2 264192 9767540735 9767276544 4.6T ...
0
votes
1answer
101 views

Linux filesystem with metadata on SSD and file data on HDD

When using an SSD (flash) cache on a HDD (hard disk) filesystem (using bcache or lvmcache on dm-cache), it can happen that some of the blocks necessary for some global operation (maybe a find) are ...
2
votes
2answers
38 views

Where can caching happen in the DNS hierarchy and how are queries forwarded?

For a hostname to resolve into its IP address, there are several DNS servers that may be queried. Assuming caching doesn't happen, it goes from whoever made the request (the client), the recursive DNS,...
0
votes
1answer
23 views

Chrome Ignoring Cache Clear

I realize this question has been asked before. I have read the previous questions, and the solutions are not working for me. Chrome absolutely refuses to clear all cached data. This is interfering ...
0
votes
1answer
53 views

RAID 5 with NVMe / Optane cache on a Z170?

Information on this is sparse and i can't get clear answers so here goes: I'm currently using a Z77 board and I'm looking into adding a Z170-/Z270-system and setting up a software-RAID 5-array with an ...
0
votes
0answers
16 views

Can't clear system cache in Pop OS

I want to clear sytem cache in my Pop!_OS (20.04 LTS). I gave the command sudo systemd-resolve --flush -caches in my terminal. But it gave an output Failed to parse RR record class aches in red ...
1
vote
3answers
32 views

Clear recent created file names in WinSCP

I would like to know how to clear recent created file names that appearing in the dialogue box when creating a new file: I tried a lot without success
1
vote
0answers
56 views

NTFS Folder Compression Fades

I am on a Windows Server with limited disk capacity. I used windows build in compression of folders to compress a 30 Gbyte file to 22 GByte. I noticed that while running a programm which frequently ...
0
votes
0answers
385 views

How can I improve linux disk caching & performance with vm*?

So far I'm setting the following parameters: vm.dirty_background_ratio vm.dirty_bytes vm.dirty_expire_centisecs vm.dirty_ratio vm.dirty_writeback_centisecs vm.dirtytime_expire_seconds Are there any ...
1
vote
0answers
106 views

mpv video freezes but audio plays when using youtube

I'm using mpv to play videos from different sources (e.g. youtube) in conjunction with my newsfeed-reader newsboat on my Debian Stable system (actually PureOS Amber which is based on Debian). But ...
1
vote
0answers
50 views

Recover Telegram media (images) after chat deletion [closed]

Is it possible to recover lost media (images) from Telegram after the chat/history deletion for both users? In AppData->Telegram it's stored some cache. Maybe it's possible... Windows desktop. ...
0
votes
0answers
12 views

I don't see any cache files on my server

I am using Squid server on Linux mint, I can see everything working fine but I don't see any cache files and space remains the same. so how to make it work? my main purpose is to low internet ...
0
votes
1answer
33 views

How to turn off Windows caching on a container file?

For a regular disk/partition, it's easy to turn off caching (useful in the case of an external HDD: you don't want to postpone writing). But in the case of a Veracrypt encrypted container file H:\...
0
votes
1answer
33 views

Will a browser keep a permanent redirect alive in cache if the page is revisited?

Erroneously a permanent redirect was made to a server for a few hours. For unknown reasons the server can't make a redirect back so now everyone who visited the web-page in these hours can't access ...
6
votes
2answers
3k views

How to clear Chrome/Chromium Edge Service Worker cache?

Note that this is NOT the Cache folder. It's the Cache of Service Worker, the path should be AppData\Local\Microsoft\Edge\User Data\Default\Service Worker. Recently I noticed my hard drive is almost ...
0
votes
1answer
137 views

Cache configuration for PostgreSQL/TimescaleDB VM on ZFS with proxmox

I have a proxmox cluster of a single node and I want to start a new VM with a PostgreSQL and TimescaleDB and after a lot of reading about how to tune ZFS volumes for this purpose I still have some ...
14
votes
4answers
4k views

Is whatever I see on the Internet temporarily present in the RAM?

Whatever I browse on the Internet, whatever page, is stored in the browser cache on my HDD. The browser cache is stored in the Temporary Internet Files folder on the C drive on the HDD. But was it ...
0
votes
1answer
44 views

Is a Windows DNS cache entry invalided on IP connection failure?

We are changing a server's IP address. Say the DNS entry is updated for this server to point to that new IP address, but the client computer has cached the DNS entry with TTL 3600 (1hr). Say the ...
0
votes
0answers
6 views

Mod_pagespeed's cache file keeps disappearing

I have a server running with Apache and mod_pagespeed. On this server, I have several installations of WordPress. The websites intermittently break due to the cache.flush file disappearing. When I ...
0
votes
2answers
380 views

Where does Firefox cache HTML5 video?

Are HTML5 videos (ie MP4) like from YouTube, etc. stored in the normal Firefox browser cache or elsewhere? I have a setting in my about:config to only store cache in RAM cause I don't like temporary ...
0
votes
0answers
38 views

Offline read cache of sshfs

I have a ~1TB music library on a remote server that I would like to setup a local ~100GB cache for such that I can transparently read cached files, even offline. What is the easiest way to do this?
0
votes
1answer
57 views

Where is an SSD's cache location?

I often run heavy programs and it causes my SSD (Windows C:) to just lose a lot of space. I came up with an idea to symlink the cache location and a separate drive (that is always plugged in). The ...
0
votes
0answers
13 views

Rails application slowly decays, I suspect Apache2 b/c of growing zombies (using phusion passenger)

We have a Rails application that over the course of the day the performance decays and the number of zombies grows. I suspect a correlation. Here's our apache2 version Server version: Apache/2.4.29 (...
0
votes
0answers
200 views

Cache and Core Box, Last Level Cache Error - PowerEdge R720

I bought a used Dell PowerEdge R720 and I'm having a little issue, or so I hope it's little. I'm getting an error on reboot after a fresh install of Windows 10 to a SSD under a Virtual Disk Raid 0. I'...
0
votes
1answer
590 views

Is it safe to delete contents of /root/.cache folder to free up space?

I need to free up disk space on my linux server. I run the df command to check space ad see that I'm using up 100% of disk space. myserver:/ # df / Filesystem 1K-blocks Used Available Use% ...
0
votes
0answers
12 views

How to save and load cache in Chrome?

Is it possible to save the cache of a website, and then reapply the cache to chrome at a later time? If so, how is it done? What browsers is this possible in?
0
votes
0answers
100 views

MS Teams logout issue

I am trying to figure out an issue with MS Teams, and not having much luck, so I'm wondering if anyone else has encountered this before. We have a shared PC in a conference room that people will use ...
0
votes
0answers
32 views

Size of the advanced write cache in the Seagate Exos 7E8 models?

Could anybody please tell me the size of the advanced write cache in the Seagate models ST4000NM000A and ST8000NM000A? The datasheet just mentions: "2M internal NOR flash". This is obviously ...
0
votes
1answer
102 views

How to create ramdisc for Prestashop cache on Debian

Recently I was struggling to create ram disk for Prestashop cache folder which will have read and write privilages. I am using Apache + Nginx (as reverse proxy) and PHP-FPM 5.6 (soon moving to 7.2) ...
0
votes
1answer
153 views

I deleted password from chrome://settings/passwords now I want to put it back but Chrome will not ask

I deleted a password from chrome://settings/passwords. I now want to put it back but Chrome will not ask me to save it. (I deleted it because I saved the wrong password.) Now I know the password and I ...
0
votes
0answers
350 views

How to enable cache for localhost in Firefox?

I setup a test website on localhost:8022 and for some reason the css style sheets are not cached. The max age of a cache is set to 0 in the header Cache-Control: max-age=0: If I visit the site with ...
0
votes
1answer
23 views

Keep most recent browsing data in web browser

When you clear your cache in modern browsers you are given choices such as: Last hour Today Last week Last month All time Google Chrome on my Android phone has recently started becoming unresponsive ...
0
votes
0answers
22 views

Why is sar command rxkb/s different than iotop command's total disk write kb/s?

I'm using fio to write to a nfs mount point to test the bandwidth of my nfs server (async mount). I'm getting inconsistent results for trying to find the maximum IOPS that my nfs server can handle ...
0
votes
0answers
95 views

Docker container with delayed disk I/O (cache)

I'm using docker-compose to run a non-essential container that generates some logs. It is not a lot of data, and the data is not important to me. Is it possible to have the docker-container cache/...
0
votes
0answers
145 views

Possible to adjust dm-cache settings for existing LVM cache volume?

I'm trying to adjust the high_watermark, low_watermark and writeback_jobs for drives that are acting as LVM caches for other drives. It seems like these settings shouldn't require a recreate of the ...
1
vote
0answers
290 views

HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\CachedLogonsCount Definition

I understand that HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\CachedLogonsCount refers to the number of domain credentials used in logons that can be cached. What I'd like to understand ...
0
votes
0answers
12 views

cache_writeback of thin-provisioning-tools running failed

I use Ubuntu 16.04 with kernel 5.4 and thin-provisioning-tools version 0.8.5 I want to test the cache_xml and cache_writeback tools of thin-provisioning, but it failed. I have two SSD as RAID0 and ...
2
votes
1answer
2k views

Can ISPs fake the results of internet speed test?

We moved to a new one he claimed to give us 15mb/s to 30mb/s and 30mb/s upload speed. If you go to any speed testing site, like fast.com or speedtest.net or any other, you see that it shows 30mb/s ...
4
votes
0answers
240 views

How to prevent the back button from being disabled (by Javascript)?

From time to time, I am encountering web sites which disable the back button in Firefox. I suppose this is done by Javascript. Is there a way to prevent the back button from being disabled (perhaps ...
4
votes
1answer
118 views

How does Chrome/Chromium eviction algorithm really work?

Chromium Disk Cache docs state: Right now we have a simple Least Recently Used algorithm that just starts deleting old entries once a certain limit is exceeded, and a second algorithm that takes ...
0
votes
1answer
78 views

Caching large files in ram

I have 4K Video files, which are slow and jerky when played from a HDD. They play flawlessly from an SSD, but my SSD has a limited lifespan, so I don't want to use it playing large temporary files. ...
1
vote
0answers
138 views

The client loads an old version of my web application. How can I prevent this?

I have a single page web-application (HTML and JS only) that clients visit in their web browser. If I upload a new version of the web application, the client will still load the old version when ...

1
2 3 4 5
13