How Twitter Uses Redis to Scale - 105TB RAM, 39MM QPS, 10,000+ Instances - High Scalability -
Yao Yue has worked on Twitter’s Cache team since 2010. She recently gave a really great talk: Scaling Redis at Twitter. It’s about Redis of course, but it's not just about Redis. Yao has worked at Twitter for a few years. She's seen some things. She’s watched the growth of the cache service at Twitter explode from it being used by just one project to nearly a hundred projects using it. That's many
BigData using Erlang, C and Lisp to Fight the Tsunami of Mobile Data - High Scalability -
This is a guest post by Jon Vlachogiannis. Jon is the founder and CTO of BugSense. BugSense, is an error-reporting and quality metrics service that tracks thousand of apps every day. When mobile apps crash, BugSense helps developers pinpoint and fix the problem. The startup delivers first-class service to its customers, which include VMWare, Samsung, Skype and thousands of independent app develope
How Vimeo Saves 50% on EC2 by Playing a Smarter Game - High Scalability -
« Stuff The Internet Says On Scalability For September 21, 2012 | Main | The 4 Building Blocks of Architecting Systems for Scale » Nothing shows how much software architectures have changed than the intelligent scheduling of computation over differently priced compute resources. This isn't just a false economy either. Vimeo saves up to 50% on their video transcoding bill by intelligently playing t
LinkedIn Moved from Rails to Node: 27 Servers Cut and Up to 20x Faster - High Scalability -
« Stuff The Internet Says On Scalability For October 5, 2012 | Main | An Epic TripAdvisor Update: Why Not Run on the Cloud? The Grand Experiment. » Update: More background by Ikai Lan, who worked on the mobile server team at LinkedIn, says some facts were left out: the app made "a cross data center request, guys. Running on single-threaded Rails servers (every request blocked the entire process),
7 Lessons Learned While Building Reddit to 270 Million Page Views a Month - High Scalability -
Steve Huffman, co-founder of social news site Reddit, gave an excellent presentation (slides, transcript) on the lessons he learned while building and growing Reddit to 7.5 million users per month, 270 million page views per month, and 20+ database servers. Steve says a lot of the lessons were really obvious, so you may not find a lot of completely new ideas in the presentation. But Steve has an e
The Anatomy of Search Technology: Crawling using Combinators - High Scalability -
« Strategy: Get Servers for Free and Make Users Happy by Turning on Compression | Main | Stuff The Internet Says On Scalability For May 25, 2012 » This is the second guest post (part 1, part 3) of a series by Greg Lindahl, CTO of blekko, the spam free search engine. Previously, Greg was Founder and Distinguished Engineer at PathScale, at which he was the architect of the InfiniPath low-latency Inf
Stack Overflow Architecture - High Scalability -
Update 2: Stack Overflow Architecture Update - Now At 95 Million Page Views A Month Update: Startup – ASP.NET MVC, Cloud Scale & Deployment shows an interesting alternative approach for a Windows stack using ServerPath/GoGrid for a dedicated database machine, elastic VMs for the front end, and a free load balancer. Stack Overflow is a much loved programmer question and answer site written by two g
Flickr Architecture - High Scalability -
Update: Flickr hits 2 Billion photos served. That's a lot of hamburgers. Flickr is both my favorite bird and the web's leading photo sharing site. Flickr has an amazing challenge, they must handle a vast sea of ever expanding new content, ever increasing legions of users, and a constant stream of new features, all while providing excellent performance. How do they do it? Site: http://www.flickr.co
Berkeley DB Architecture - NoSQL Before NoSQL was Cool - High Scalability -
After the filesystem and simple library packages like dbm, Berkeley DB was the original luxury embedded database widely used by applications as their core database engine. NoSQL before NoSQL was cool. The hidden secret making complex applications sing. If you want to dispense with all the network overhead of a server based system, it's still a a good choice. There's a great writeup for the archite
Tumblr Architecture - 15 Billion Page Views a Month and Harder to Scale than Twitter - High Scalability -
With over 15 billion page views a month Tumblr has become an insanely popular blogging platform. Users may like Tumblr for its simplicity, its beauty, its strong focus on user experience, or its friendly and engaged community, but like it they do. Growing at over 30% a month has not been without challenges. Some reliability problems among them. It helps to realize that Tumblr operates at surprisin
Tagged Architecture - Scaling to 100 Million Users, 1000 Servers, and 5 Billion Page Views - High Scalability -
This is a guest post by Johann Schleier-Smith, CTO & co-founder, Tagged. Five snapshots on how Tagged scaled to more than 1,000 serversSince 2004, Tagged has grown from a tiny social experiment to one of the largest social networks, delivering five billion pages per month to many millions of members who visit to meet and socialize with new people. One step at a time, this evolution forced us
High Scalability | Building bigger, faster, more reliable websites.
Kafka 101 This is a guest article by Stanislav Kozlovski, an Apache Kafka Committer. If you would like to connect with Stanislav, you can do so on Twitter and LinkedIn. Originally developed in LinkedIn during 2011, Apache Kafka is one of the most popular open-source Apache projects out there. So far it Capturing A Billion Emo(j)i-ons This blog post was written by Dedeepya Bonthu. This is a repost
Why are Facebook, Digg, and Twitter so hard to scale? - High Scalability -
Real-time social graphs (connectivity between people, places, and things). That's why scaling Facebook is hard says Jeff Rothschild, Vice President of Technology at Facebook. Social networking sites like Facebook, Digg, and Twitter are simply harder than traditional websites to scale. Why is that? Why would social networking sites be any more difficult to scale than traditional web sites? Let's fi
Saying Yes to NoSQL; Going Steady with Cassandra at Digg - High Scalability -
The last six months have been exciting for Digg's engineering team. We're working on a soup-to-nuts rewrite. Not only are we rewriting all our application code, but we're also rolling out a new client and server architecture. And if that doesn't sound like a big enough challenge, we're replacing most of our infrastructure components and moving away from LAMP. Perhaps our most significant infrastru
Digg: 4000% Performance Increase by Sorting in PHP Rather than MySQL - High Scalability -
O'Reilly Radar's James Turner conducted a very informative interview with Joe Stump, current CTO of SimpleGeo and former lead architect at Digg, in which Joe makes some of his usually insightful comments on his experience using Cassandra vs MySQL. As Digg started out with a MySQL oriented architecture and has recently been moving full speed to Cassandra, his observations on some of their lessons l
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