A disk or memory cache that supports the caching of writing. Data written by the CPU to memory or to disk is also written into the cache. Write performance is not improved with this method. However, if a subsequent read operation needs that same data, read performance is improved, because the data are already in the high-speed cache. See write back cache.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2009 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- Mac ZFS is dead: RIP.
- fortunatelywhile zfs is cool, there are enough other file systems, so we users won't miss it muchHow about EXT4 and BTRFS?What do you think of EXT4 and it's destined successor, BTRFS?NTFSActualy has similar features to most of these but maybe its not implemented as well.Apple picks NetApp WAFL over...
- Discussion threads 2009-10-26
- Time to ditch Windows for online banking and shopping
- Instead of a live CDWould I be able to install Linux in Windows and do the same?Amen! Happened today to a gov't computerhttp://www.pennlive.com/midstate/index.ssf/2009/10/computer_hacker_steals_479000.htmlYet another infected computer stealing OUR money.Absolutely ridiculous and irresponsible article!Show me an instance where a flaw in Vista/7 has led to a user being compromised? ...
- Discussion threads 2009-10-13
- Yahoo pays its 'technical debt' with IT overhaul
- Yahoo had a lot of "technical debt"---systems that most companies would call legacy infrastructure---and has it just about paid off. Sam Pullara, chief technologist at Yahoo, walked developers through its infrastructure changes over the last three years. The talk could have come from any enterprise that finds...
- Blog posts 2009-10-09
- MSI X340 might be the best laptop you've never heard of
- Glossy LCD? No thanksA Lenovo X300 from the Lenovo Outlet for about $1100 seems to be the best deal to me. For an extra $400 beyond the MSI you get a fast SSD, higher resolution non-glossy display though the viewing angle and contrast is rather disappointing, a second processing core,...
- Discussion threads 2009-09-24
- 10 Windows XP services you should never disable
- You guys are pitiful. DNS clientOnly deals with cacheing. This below is from XP's description of the DNS client. This is why bloggers suck as journalists. You are a joke and never do your homework. The DNS Client service dnscache caches Domain Name System DNS names and registers the full...
- Discussion threads 2009-08-24
- A Good Year for Security Collaboration
- Guest Editorial by George Stathakopoulos It seems like just yesterday when I was at Black Hat. Now as I get ready to fly to Las Vegas again, I look forward to seeing a lot of security researchers, hearing their latest exploits and how they fared over the...
- Blog posts 2009-07-27
- Rearview madness and Wintel customer spin
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- Discussion threads 2009-02-11
- How to make your website really, really fast
- Steve Souders knows how to make a website speed through a web browser. And he works at Google, one of the fastest websites around. Web performace is a two-pronged beast: efficiency and response time. Efficiency deals with the scalability challenges...
- Blog posts 2009-02-09
- Should the Mac Mini die?
- Should the Mac Mini die?Most everyone who owns one appears to really like it.Performance wise you're the first person I've seen who had anything less than favorable to say about it.RE: Should the Mac Mini die?I have a spare 19" LCD at home that is just waiting for the new...
- Discussion threads 2008-11-06
- Apple mega-patch covers 34 Mac OS X security issues
- Apple has shipped another mega-update to address security vulnerabilities affecting Mac OS X users, warning that the most serious issues could lead to arbitrary code execution attacks. The update, available for Tiger and Leopard, addresses a total of 34 documented vulnerabilities, some in third-party components like ClamAV,...
- Blog posts 2008-09-15
- Wordcamp 2008
- In the quiet flats of University of California San Francisco Mission Bay campus, bloggers, thinkers, journalists, developers, and inventors melt together for a full day of lectures and learning. The goal of Wordcamp 2008 is to figure out the future of publishing on the web. ...
- Blog posts 2008-08-16
- Apple hasn't learned from past security mistakes
- Apple hasn't learned from past security mistakesTo sum upSafari is insecure because other software has exploits.Do you get dizzy much from spinning so fast?RE: Apple hasn't learned from past security mistakesIt probably has more to do with Apple being used to abiding by what is considered normal security obligations on...
- Discussion threads 2008-07-08
- Iomega eGo Portable Hard Drive (250GB, Brown)
- The 250GB brown leather is a classy refresh of their eGo external hard drives. Last year, we reviewed the 160GB Cherry Red version for $130. This new eGo gets an aesthetic upgrade and 110 more gigs of space for just $20 more. If you like the look and feel of...
- Product reviews 2008-07-02
- 'Sensing' more about what's coming in Windows 7
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- Discussion threads 2008-06-18
- Don't download Firefox 3 yet
- Don't download Firefox 3 yetRE: Don't download Firefox 3 yetHaha, just one of those marketing gimmicks! Does Mozilla have sufficient bandwidth for the hordes or downloaders? ;)RE: Don't download Firefox 3 yetFirefox 3 is hosted by Google's servers. I think the goog can handle both the server...
- Discussion threads 2008-06-17
- Samsung announces 3G 'iPhone killer'
- Samsung announces 3G 'iPhone killer'3GCan you honestly believe 3G wasn't solid enough to add? It's not like it was brand new, or GPS perhaps?If lacking those features...already available in other phones is not a flaw, then yes, you are correct.Other people who don't chug the Kool-Aid might think otherwise.Not...
- Discussion threads 2008-06-09
- OWC Mercury On-The-Go (500GB)
- Laptop hard-drive capacity hit the 500GB mark just a few months ago. The OWC Mercury On-The-Go is an external version of this new breed of 2.5-inch hard drives. Aside from having the largest storage capacity among compact external drives, the Mercury offers a handful of other features. The drive supports...
- Product reviews 2008-05-13
- A distributed alternative to Twitter must respect what already exists
- Lots of talk over the last few days among Twittervangelists about the need for some kind of open source and fully distributed version of Twitter to protect against the outages that continue to plague the service. "We're all creating artifacts and connections that are even more fragile...
- Blog posts 2008-05-05
- So the net routes around censorship? Tell it to China
- So the net routes around censorship? Tell it to ChinaEver talk to a Chinese student?Talk to someone actually in China, particularly younger people. The "Great Firewall of China" is considered a joke by most people I've talked to, and in practice appears more like brownouts then any effective censorship organ....
- Discussion threads 2008-03-18
- Will the MacBook Air ruin the MacBook Pro?
- New owners of the MacBook Air are putting the controversial ultralight Mac through its paces in actual, real-world workflows. And the results are upbeat. At the same time, the solid results from the ultralight spark questions about the redesign of the MacBook Pro â€" whenever Cupertino decides...
- Blog posts 2008-02-21
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