How do I clear the Cache in Yosemite?

Why?

It is usually a waste of time.

Many times the cache can become corrupted and give Safari problems. I occasionally am unable to get Safari to open at all but cleaning the cache fixes that.

While it is true that cache can be corrupted, the last time it happen on any of my Macs was so long I have actually forgotten exactly when it was. It was a bunch of years ago when it happened.

You are very luck. This is not the case for EVERYONE

So far the users I have helped who were having to clear cache with any kind frequency shorter then annually had other problems with their Mac that was causing the cache corruption. Frequent cache corruption is usually the symptom of other problems. One should troubleshoot your Mac to find the actual cause and fix it.

Nice IF they can locate the problem. Many times it is hidden and/or the user might not have the expertise to do that.

I am done with this thread and thanx for your input.

Thank you so much, Kappy. I look for the user level to help me know who is best informed and experienced at answering the problems. Your level 10 is like a Good Housekeeping Seal of Approval. ; ) Thank you also to Allan Eckart, Level 8. Thank you for your patience with the lower levels - sometimes a bit of saber-rattling can keep you on your game. Or, just be plain annoying.

Thanks again.

Just to add. If a person wants to delete Safari's cache for whatever reason, there's no need to use a lengthy script, Terminal command, or any other tool to do it. Safari provides that itself.

Open Safari's preferences and click on the Advanced tab. Turn on the bottom check box to "Show Developer menu in menu bar". Now there will be additional items in the main menu bar. Choose Develop > Empty Caches, or press Command+Option+E to do the same thing. Done.

Now to the question at hand. With the specs he has posted:

_ iMac 27inch-Mid 2010 _ Yosemite V10.10 _ 2.93 Ghz Core i7_ 16 GB 1333 MHz DDR3 RAM _

Unless you are running the entire Final Cut Studio, Adobe CS, and editing RAW uncompressed images and photos, in my humble opinion might I add, most likely is not an issue with the cache, yet it is quite possible. And will not hurt to look into the finer grains of sand about whats going on behind that beautiful 27in screen. Now that may or may not be the first route I would peek into, but just for fun, look into flushing your DNS -- or Domain Name System -- which entails the MDSN and UDNS - Multicast and Unicast. The MDSN is a bit more like jumping into the rabbit hole with Alice versus horseback riding in Fargo. Sorry to cut out in the middle, but I will leave some links. Ultimately, I was leading towards malicious software, otherwise known as malware, which, depending on the script, will do very bad things to your babies internal architecture.

Moz has the best docs on the net; hands down. Travel through, fail and fail some more and the reward will be glorious.

https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware

<Edited By Host>

Wow! Thanks Kappy. I've been in and out of the Mac world since I used my first SE 30 back in '91 but I have never really understood the fundamentals of how these things actually work. After reading your blurb on RAM my jaw hit the floor and I smacked myself upside the head. I finally got it...lol Thanks again.

I agree that clearing the cache is very important. In particular, there are, and I've had, third party software that has "hijacked" the computer even with good anti-virus software and even after running MalwareBytes for MAC.

I'd like to know if there are any programs that analyze the cache for this very problem? I was told that El Capitan solves this problem. Anyone know? I also think this is happening because we are networked through a WINDOWS server. Just saying.

"good anti-virus software"

I find that statement to be a bit of an oxymoron since I have yet find anything I would classify as good in the category of AV software. I see it all as worthless scams that do nothing useful.

It's just STUPID the have to get a text message to reply here

You can clear the cache with this script:

--Empty Safari Cache (v1)

--NB: Save as application

---------------------------------------------

(*==========PROPERTIES==========*)

property path2home : (path to home folder)

property TargetFileName : "Cache.db"

property TargetFileLocation : (path2home & "Library:Caches:com.apple.Safari:") as text

property TargetFile : TargetFileLocation & TargetFileName

property mytitle : "Empty Safari Cache"

(*==========SCRIPT==========*)

--check if Safari is running

set SafariRunning to false

tell application "Finder" to get name of processes

set application_list to result

if application_list contains "Safari" is true then

set SafariRunning to true

end if

--dialog

display dialog "Empty Safari Cache?" default button 2 --with icon 1

--quit Safari first!

if SafariRunning is true then

display dialog "Quit Safari to continue!" buttons {"Cancel", "OK"} default button 2 with icon 0

end if

tell application "Safari" to quit

delay 1

--trash file

tell application "Finder"

if exists file TargetFile then

deleteTargetFile

tell me

display dialog "Cache emptied." buttons {"Launch Safari", "Done"} default button 2 --with icon 1 with title mytitle

set button_returned to button returned of the result

end tell

else

tell me

display dialog "Cache already empty!" buttons {"Launch Safari", "Done"} default button 2 --with icon 1 with title mytitle

set button_returned to button returned of the result

end tell

end if

end tell

--relaunch Safari

if button_returned is "Launch Safari" then

tell application "Safari" to activate

end if

(*==========END==========*)

Is there a way you and I could communicate? I (my company) am an Apple Premium Service Provider who would love to ask you a question from time to time.
Thanks!
<E-mail Edited by Host>

Allan, I appreciate your contribution to this discussion and when ever I read your replies elsewhere -they are easy to understand even for a beginner. Thank you.