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).

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7 views

Prevent Cached Thumbnails on Desktop

When I copy a shared folder from my main Dropbox folder to my desktop, the cached thumbnail signifying that it's shared (icon of 3 stick figures) persists as an overlay on that directory icon on the ...
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1answer
10 views

nginx returns error 500 when I delete cache

I am using nginx 1.8.1 with microcache to cache some php requests on /dev/shm and it's working fine, however, when I reboot the server the cached files are gone (obviously) but nginx still references ...
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21 views

What is Hard Drive Cache?

I'm pretty new to the computer building world and I'd like to know what hard drive cache exactly is and what it exactly does.
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0answers
9 views

What does atop 'cache' output really mean?

The atop man page says: An occupation percentage of 90% is considered 'critical'. Notice that this occupation percentage is the accumulated memory consumption of the kernel (including slab) ...
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0answers
28 views

Intel PCM ( Performance Counter Monitor ) - Low hit rate for LLC

I am having Intel Xeon D-1520 CPU I tried to run Intel PCM to get the the L3 cache miss and hit ratio. L3MISS: L3 cache misses L3HIT : L3 cache hit ratio (0.00-1.00) Core (SKT) | EXEC | IPC | ...
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20 views

PrimoCache - How to use my ram to cache “frequent read data” for ssd

How to use ram to cache (frequently data read) for ssd ? (Instead use ssd to cache for hdd like before) Examble : Everyday i turn on computer and open Firefox.vv, bla bla. This is my "frequent read ...
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30 views

Negative consequences of disabling thumbnail cache on SSD?

A common tip for SSD users is to disable thumbnail cache for 2 reasons: first, the SSD is fast enough to load thumbnails near instantaneously without the cache (disabling the cache doesn't disable ...
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0answers
30 views

Windows caches 403 machine-wide?

In all honesty, I have no idea how to formulate this question, it's the weirdest thing I've ever encountered. When developing a website on an external VPS and I encounter on my desktop a 403 or 404 ...
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1answer
28 views

dm-cache doesn't seem to work - no performance difference

I'm creating dm-cache device using my script: http://pastebin.com/KTSzL6EA Effectively it's running those commands: dmsetup create suse-cache-metadata --table 0 15872 linear /dev/mapper/suse-cache 0 ...
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2answers
18 views

Where is DNS cache located on Windows 8.1?

I'm reading about DNS cache and particularly about ipconfig /flushdns command. There are many resources out there - QA, blogs, sites - that explain what is DNS cache but none of them say where DNS ...
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0answers
18 views

RAM backed File I/O

I have an HP laptop which parks its hard drive at the slightest bump, presumably detected by accelerometers. I'm glad it does this. I don't want horribly corrupted data. However, I have some pieces of ...
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0answers
8 views

cache/maintain files for offline device

I have a USB drive that I use as a file store and backup. It is on a separate power strip because I don't want to use it all the time. When it's off, some programs crap out(stall, complain, lose ...
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9 views

Invalidate/clear cache of eye-of-gnome

I am doing some image rendering, and I replaced an entire directory with corrected images. Now I notice that EOG (eye-of-gnome / GNOME Image Viewer) is entirely not trustworthy with what it displays. ...
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0answers
31 views

How to use SSD as a cache to main HDD? [duplicate]

I installed Windows 10 and a bunch of games on a 500 GB drive. I also have a spare 64 GB SSD lying around. Can I use the SSD as an automatic cache? If so, how? I have looked around a fair bit, but ...
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0answers
7 views

Do I need memcached when I am using mongodb?

How to know if there is a need to implement caching? My website takes all the data from mongodb, mongo itself copies the data to ram, why might someone need another caching mechanism like memcached? ...
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0answers
22 views

I'm looking to setup a NNTP cache/proxy server primarily for header caching on linux. Which one is recommended?

My requirement is that the News NNTP cache and proxy server must be able to cache headers without downloading the articles. i.e only download articles if requested. There is a mention about ...
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0answers
15 views

Isn't overall cache miss time more than direct ram access time

Suppose there is a computer with three cache's L1,L2(inside the processor) and L3(external to the cpu) and a RAM. Now suppose CPU need to access data "ABC" for some operation which is definitely ...
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9 views

Do application cache/config files benefit significantly on an SSD?

Applications should be installed on an SSD to take advantage of the performance advantage it has over HDDs. However, do cache and config/settings files in the User folder on Windows and the /home ...
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1answer
52 views

Use a SSD on linux to speed up the access to the data files on the HDD without wasting space and wearing it out?

I've bought a brand new 250GB Samsung 850 EVO for my laptop using Ubuntu that I want to use as primary storage device, together with the old, but still pretty functioning, 250GB 7500 RPM HDD that I ...
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0answers
147 views

Why caching service does not cache downloaded app from app store?

I've enabled Caching server on osX server as it has green light. On this stage I downloaded an app from app store but cache tell None in the picture below. Is there something else to configure on this ...
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1answer
33 views

Raid Controller Write-Back Cache Behavior

I am trying to understand how it is that the write-back cache on a raid controller can continue to yield a benefit while you're writing a huge random dataset. Let me first say that I understand how a ...
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0answers
33 views

Intel RST/SRT: SSD-Cached Raid but OS on another SSD

I plan to setup my new Computer with a SSD cached HDD Raid 1. Like I understand RST/SRT I have to install the OS on the HDD then. Is it possible to install it on another SSD also? I've currently got: ...
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1answer
48 views

Any point in having SSD cache with SSD system disk?

Apologize if the title is unclear, had a hard time formulating the question in a sentence. So I have a Lenovo Y510p which originally came with a 1 TB HDD as system drive and 24 GB SSD cache (M.2 ...
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0answers
22 views

Something is caching my web page

I have a page that is marked do not cache. When I hit Ctrl-F5 on my browser, I git the current version and an older version, each about %50 of the time. Something is caching it somewhere. We have ...
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0answers
20 views

Offline caching not working on any Windows System

We have configured the personal drive to be the cache for users who are using laptops through a group and group policy, but since we upgraded our Domain level from 2003 to 2008 it doesn’t cache all of ...
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0answers
84 views

How to disable caching in windows server 2012 R2?

How to disable caching in windows server 2012 R2 ? Any way to set it to a minimal value is also fine. Also disabling caching for a particular application will also work as only 1 application is run ...
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0answers
44 views

How to cache text/event-stream data in squid 4.x?

I would like to cache data transferred by git clone via HTTPS which seems to be of type text/event-stream. The cacheing either fails with TCP_CLIENT_REFRESH_MISS/200 or TCP_MISS_ABORTED/200 according ...
2
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0answers
44 views

Limit the size of the disk driver cache on Linux

I am running some experiments for comparing storage systems under load in Linux. To this end I want to force the file system to access the disk itself without caching too much data on RAM. How can I ...
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2answers
41 views

How to make windows (8.1) not generate thumbnails every time I browse into a folder?

every single time I browse into a photo or video folder, it regenerates the thumbnails on every file, isn't this the whole point of caching thumbnails, so it don't happen every single time! this is ...
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1answer
36 views

How to flush DNS caches that parse domain name to IP address in Windows 7 and 10?

My google search came up with this answer that use ipconfig /flushdns command. Though on my Windows 7 and Windows 10, this command doesn't help me to get the latest IP address for a given domain name ...
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0answers
17 views

Which refreshPattern do I have to use to cache git clone results via HTTPS?

I setup a HTTPS intercepting caching proxy using squid 4.0.1 on Ubuntu 15.10 and SSL Bumping following http://wiki.squid-cache.org/ConfigExamples/Intercept/SslBumpExplicit. Now, specifying ...
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1answer
85 views

Having SSHD while using an SSD working on AHCI mode

So I have an SSD working on AHCI mode. I'm planning to add an SSHD to my rig, so the question is do I have to change SATA controller to RAID mode when I got my SSHD? (to enable its Built-in SSD ...
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1answer
62 views

How does the kernel determine cache line size at runtime?

I noticed /proc/cpuinfo offers a cache line size: # cat /proc/cpuinfo | egrep "(cache|clflush)" cache size : 6144 KB flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat ...
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1answer
20 views

Website files being cached on a Debian webserver running PHP 5.5.28

When I make small changes to my website and upload them it usually takes a few minutes for those changes to be reflected live. It only started happening after I installed a new debian system through ...
7
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1answer
967 views

What does the filesystem cache do in Windows 7?

The Diagnosing why Git is so slow article has this interesting item in it: Enable the filesystem cache Windows' filesystem layer is inherently different from Linux' (for which Git's ...
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1answer
77 views

Should the caching be enabled or disabled for ReadyBoost?

e.g. ...Device Manager -> Disk drives -> USB device -> Properties -> Policies.Options Should the caching be enabled or disabled for ReadyBoost?
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1answer
53 views

Why is so much RAM being cached?

free -m total used free shared buffers cached Mem: 32086 30156 1930 51 564 26606 -/+ buffers/cache: 2985 29101 ...
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1answer
17 views

Apache2 “caching” my pages, while I don't have cache installed

just to know, I am not a system admin (I mean this is not my job), and I try to configure my apache just to produce my projects. My system is Ubuntu 15.04 and I have installed Apache2 Apache/2.4.10 ...
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0answers
223 views

lvmcache — one cache pool for multiple origin LVs

I have a shiny new computer with a not-that-large SSD (120GB) and two gigantic spinning-rust HDs (3TB each). I want to partition it as follows: swap (~128GB), operating system (~128GB), and data ...
2
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0answers
436 views

Virtualbox host io cache applying scenarios

Virtualbox docs says that using host io cache for sata controller may be a risk of system performance. At the same time, on my case I see advantage of using host io cache - DisckCrystalMark reports ...
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0answers
25 views

How to configure a cache proxy to cache everything regardless of cache headers?

I am wondering if there was a cache proxy available that would cache every single request after initial visit to a HTML web page visit avoiding subsequent call's to the home server. The system will ...
0
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1answer
54 views

How if at all is it useful to clear cookies when clearing the cache? [closed]

The Refreshyourcache site (http://www.refreshyourcache.com/) does not mention clearing cookies, and says that its instructions "to clear your browser's cache [will force] it to download all latest ...
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1answer
72 views

Windows - how to disable/test disk cache

I have some problems with my WD5000AAKX disk and i think that faulty RAM cache could be the reason. Western Digital diagnostic tool reports that everything is OK. Is there any way how to disable read ...
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0answers
18 views

Network DNS Cache - Typical Update Time [duplicate]

I recently set up a new website, and attempted to access it before it was fully set up - resulting in a DNS error. Fast forward 24 hrs, the website is fully set up and accessible via my mobile and ...
1
vote
1answer
140 views

Using SSD will reduce RAM cache?

I have Laptop having 16GB RAM with normal HDD, I am using windows 8.1 and now it is taking 8GB RAM as cache. My question is, If I use SSD, will it reduce cache size in RAM as SSD is fast enough to ...
2
votes
1answer
41 views

How to create a file in memory in Windows Server?

How can I store and have access to a file in memory in Windows Server 2008 R2 Standard? I would like to have quick access to a database. Since SQLite stores database in file I would like to store this ...
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0answers
153 views

Recovering a file after reset offline cache Windows 7?

I was having problem with a network mapped folder stop syncing. I made it available offline before but couldn't get it back online no matter what (got "This folder is offline because of a user chose ...
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1answer
412 views

Windows 8.1 cached memory and memory optimizers

I can't find similar question so talking about it so I would like to create one. It is a bit long so I bold what I want to ask actually. Someone had noticed Windows 8 is taking too much memory for ...
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1answer
52 views

How do I preserve a page cached by Google? [closed]

Some friends at a university are documenting some shady relationships with donors at a university. Recently the university removed some pages containing official statements. Currently the pages are ...
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0answers
37 views

Is there a way to build a cache of internet files on local computer?

I use Windows (7 for now). In the future I am planning to go somewhere where internet costs 5¢/MB and I am wondering about schemes for saving on bandwidth. I would like to know if there are any tools ...