The Architecture Twitter Uses to Deal with 150M Active Users, 300K QPS, a 22 MB/S Firehose, and Send Tweets in Under 5 Seconds - High Scalability -
Toy solutions solving Twitter’s “problems” are a favorite scalability trope. Everybody has this idea that Twitter is easy. With a little architectural hand waving we have a scalable Twitter, just that simple. Well, it’s not that simple as Raffi Krikorian, VP of Engineering at Twitter, describes in his superb and very detailed presentation on Timelines at Scale. If you want to know how Twitter work
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
7 Years of YouTube Scalability Lessons in 30 Minutes
« Sponsored Post: Gigaspaces, Nokia, Oracle, Percona Live, AiCache, ElasticHosts, Logic Monitor, Attribution Modeling, New Relic, AppDynamics, CloudSigma, ManageEngine, Site24x | Main | Stuff The Internet Says On Scalability For March 23, 2012 » If you started out building a dating site and instead ended up building a video sharing site (YouTube) that handles 4 billion views a day, then it’s just
Zen and the Art of Scaling - A Koan and Epigram Approach - High Scalability -
This is a guest post derived from an email conversation with Russell Sullivan, a computer architect and creator of Alchemy Database, A Hybrid RDBMS/NOSQL-Datastore. Russell (AKA Jak Sprats) has been pondering, considering, and implementing distributed databases for many years. In a recent email conversation he shared 44 of the lessons he has learned from developing the infrastructure for high perf
6 Lessons from Dropbox - One Million Files Saved Every 15 minutes - High Scalability -
« Twitter by the Numbers - 460,000 New Accounts and 140 Million Tweets Per Day | Main | Google and Netflix Strategy: Use Partial Responses to Reduce Request Sizes » Dropbox saves one million files every 15 minutes, more tweets than even Twitterers tweet. That mind blowing statistic was revealed by Rian Hunter, a Dropbox Engineer, in his presentation How Dropbox Did It and How Python Helped at PyC
7 Design Patterns for Almost-infinite Scalability - High Scalability -
Good article from manageability.com summarizing design patterns from Pat Helland's amazing paper Life beyond Distributed Transactions: an Apostate's Opinion. Entities are uniquely identified - each entity which represents disjoint data (i.e. no overlap of data between entities) should have a unique key.Multiple disjoint scopes of transactional serializability - in other words there are these 'enti
Seven Signs You May Need a NoSQL Database - High Scalability -
While exploring deep into some dusty old library stacks, I dug up Nostradamus' long lost NoSQL codex. What are the chances? Strangely, it also gave the plot to the next Dan Brown novel, but I left that out for reasons of sanity. About NoSQL, here is what Nosty (his friends call him Nosty) predicted are the signs you may need a NoSQL database... You noticed a lot of your database fields are really
13 Scalability Best Practices - High Scalability -
AFK Partners has release what they feel are the Best Practices for Scalability: Asynchronous - Use asynchronous communication when possible.Swim Lanes – Create fault isolated “swim lanes” of hardware by customer segmentation.Cache - Make use of cache at multiple layers.Monitoring - Understand your application’s performance from a customer’s perspective.Replication - Replicate databases for recover
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
Wolfram|Alpha Architecture - High Scalability -
Making the world's knowledge computable Today's Wolfram|Alpha is the first step in an ambitious, long-term project to make all systematic knowledge immediately computable by anyone. You enter your question or calculation, and Wolfram|Alpha uses its built-in algorithms and growing collection of data to compute the answer. Answer Engine vs Search Engine When Wolfram|Alpha launches later today, it wi
Eight Best Practices for Building Scalable Systems | High Scalability
Wille Faler has created an excellent list of best practices for building scalable and high performance systems. Here's a short summary of his points: Offload the database - Avoid hitting the database, and avoid opening transactions or connections unless you absolutely need to use them. What a difference a cache makes - For read heavy applications caching is the easiest way offload the database.
Scalability resources - High Scalability -
I found this resources: High Scalable Architecture: - YouTube Architecture - Facebook Chat Architecture - Amazon Architecture Blogs: - Scalability Guidelines for building scalable software system (part 1) - Scalability Guidelines for building scalable software system (part 2) - Scalability Guidelines for building scalable software system (part 3) - Scalability Worst Practices - how to minimize loa
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10 Golden Principles For Building Successful Mobile/Web Applications - High Scalability -
iDoneThis - Scaling an Email-based App from Scratch - High Scalability -
Monday Fun: Seven Databases in Song - High Scalability -
10 NoSQL Systems Reviewed - High Scalability -
Domain error
Art of Parallelism presentation | High Scalability
Domain error