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CloudFlare's CDN is based on Anycast, a standard defined in the Border Gateway Protocol—the routing protocol that's at the center of how the Internet directs traffic. Anycast is part of how BGP supports the multi-homing of IP addresses, in which multiple routers connect a network to the Internet; through the broadcasts of IP addresses available through a router, other routers determine the shortest path for network traffic to take to reach that destination.

Using Anycast means that CloudFlare makes the servers it fronts appear to be in many places, while only using one IP address. "If you do a traceroute to Metallica.com (a CloudFlare customer), depending on where you are in the world, you would hit a different data center," Prince said. "But you're getting back the same IP address."

That means that as CloudFlare adds more data centers, and those data centers advertise the IP addresses of the websites that are fronted by the service, the Internet's core routers automatically re-map the routes to the IP addresses of the sites. There's no need to do anything special with the Domain Name Service to handle load-balancing of network traffic to sites other than point the hostname for a site at CloudFlare's IP address. It also means that when a specific data center needs to be taken down for an upgrade or maintenance (or gets knocked offline for some other reason), the routes can be adjusted on the fly.

That makes it much harder for distributed denial of service attacks to go after servers behind CloudFlare's CDN network; if they're geographically widespread, the traffic they generate gets spread across all of CloudFlare's data centers—as long as the network connections at each site aren't overcome.

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Today, a large collection of Web hosting and service companies announced that they will support Railgun, a compression protocol for dynamic Web content. The list includes the content delivery network and Web security provider CloudFlare, cloud providers Amazon Web Services and Rackspace, and thirty of the world’s biggest Web hosting companies.

Railgun is said to make it possible to double the performance of websites served up through Cloudflare’s global network of data centers. The technology was largely developed in the open-source Go programming language launched by Google; it could significantly change the economics of hosting high-volume websites on Amazon Web Services and other cloud platforms because of the bandwidth savings it provides. It has already cut the bandwidth used by 4Chan and Imgur by half. “We've seen a ~50% reduction in backend transfer for our HTML pages (transfer between our servers and CloudFlare's),” said 4Chan’s Chris Poole in an e-mail exchange with Ars. “And pages definitely load a fair bit snappier when Railgun is enabled, since the roundtrip time for CloudFlare to fetch the page is dramatically reduced. We serve over half a billion pages per month (and billions of API hits), so that all adds up fairly quickly.”

Rapid cache updates

Like most CDNs, CloudFlare uses caching of static content at its data centers to help overcome the speed of light. But prepositioning content on a forward server typically hasn’t helped performance much for dynamic webpages and Web traffic such as AJAX requests and mobile app API calls, which have relatively little in the way of what’s considered static content. That has created a problem for Internet services because of the rise in traffic for mobile devices and dynamic websites.

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fetchnotes iphone app

The build-in note-taking app on your iPhone is pretty boring, only recently gaining the ability to sync your notes over the Web to your Mac.

It's not nearly as robust as other apps like Evernote.

But what if there was a way to improve on this simple idea by integrating one of our favorite social media platforms, Twitter?

Meet Fetchnotes.

Fetchnotes is more than just a place to store ideas. Users generate their own organization method through hashtags and followers.

Fetchnote's goal is to make productivity as simple as writing a Tweet. As you tag notes, you're building a productivity system and structure on the fly.

The four person team is based in Cambridge, Massachusetts and for the firs time the company is moving beyond just being a repository for notes and transitioning into a dynamic way to execute tasks rather than just store them.

Just a few weeks ago Fetchnotes completely revamped its app and added video previews from Youtube; songs from SoundCloud and Spotify; and article previews from National Geographic, The Onion, CNN, and more sources.

"Fetchnotes offers the easiest input with the most valuable return available," Alex Schiff, the company's CEO told Business Insider. "The two things we're working on now is, how our users are interacting with each other and making our app more useful." 

Download Fetchnotes for free on iOS.

Fetchnotes is a free download in Apple's app store. The service is also available on the web at www.fetchnotes.com. Once you download the app, tap to open it.

This is Fetchnotes' opening screen. We really like the cute art.

Before we sign up for an account we'll highlight some of Fetchnotes' best features. Swipe from right to left.

See the rest of the story at Business Insider

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sugarsync 640 wide

Cloud storage and file-syncing service SugarSync today announced the launch of SugarSync 2.0 in public beta, a big step forward in its battle against Dropbox, SkyDrive, and Google Drive. SugarSync has always been a feature-rich app, but 2.0 is a leap forward in a key area where it’s always been lacking: accessible design. "We got feedback that SugarSync was the most powerful [syncing solution], but not that it was the easiest to use," CEO Laura Yecies told The Verge, so the company focused largely on designing a simple desktop app for the last year and a half. SugarSync 2.0 also adds a powerful search feature on the desktop and web, as well as an expanded set of sharing options — two of its most request features.

With version 2.0,...

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The inside of Equinix's co-location facility in San Jose—the home of CloudFlare's primary data center.

Photo: Peter McCollough/Wired.com

On August 22, CloudFlare, a content delivery network, turned on a brand new data center in Seoul, Korea—the last of ten new facilities started across four continents in a span of thirty days. The Seoul data center brought CloudFlare's number of data centers up to 23, nearly doubling the company's global reach—a significant feat in itself for a company of just 32 employees.

But there was something else relatively significant about the Seoul data center and the other 9 facilities set up this summer: despite the fact that the company owned every router and every server in their racks, and each had been configured with great care to handle the demands of CloudFlare's CDN and security services, no one from CloudFlare had ever set foot in them. All that came from CloudFlare directly was a six-page manual instructing facility managers and local suppliers on how to rack and plug in the boxes shipped to them.

"We have nobody stationed in Stockholm or Seoul or Sydney, or a lot of the places that we put these new data centers," CloudFlare CEO Matthew Prince told Ars. "In fact, no CloudFlare employees have stepped foot in half of the facilities where we've launched." The totally remote-controlled data center approach used by the company is one of the reasons that CloudFlare can afford to provide its services for free to most of its customers—and still make a 75 percent profit margin.

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