真にスケーラブルなWebアプリケーションを作るには?という話題で盛り上がった件 - Tous Les Jours 攻防記
先週末は上京してRubyKaigiに参加してきました。 運よくLT枠をいただくことができたので、タイトルのようなテーマで（結構紆余曲折があって、当初の想定から逸れてしまった...）プレゼンさせてもらうことができました。 話の流れとしては、 「WebアプリケーションのボトルネックはRDB」 ↓ 「RDBってAmazonEC2みたいなHaaSではスケールしないよね。」 ↓ 「本当に（アプリのコードをそのままで）スケールさせようと思ったら、AmazonSimpleDBのようなクラウドDBを使うしかない」 ↓ 「SimpleDBはMySQLより一桁以上遅いから、単純にRDBをSimpleDBに置き換えると、えらいことになる」 ↓ 「SimpleDBへのアクセスを極力少なくするため、リクエストはMemcachedとかでキャッシュしまくる必要があるね」 ↓ 「このあたりを今Lang-8で実験している。
Paper: Dynamo: Amazon’s Highly Available Key-value Store | High Scalability
Update 2: Read/WriteWeb has a good article talking about the scalability issues of relational databases and how Dynamo solves them: Amazon Dynamo: The Next Generation Of Virtual Distributed Storage. But since Dynamo is just another frustrating walled garden protected by barbed wire and guard dogs, its relevance is somewhat overstated. Update: Greg Linden has a take on the paper where he questions
Paper: The End of an Architectural Era (It’s Time for a Complete Rewrite) - High Scalability -
Update 3: A Comparison of Approaches to Large-Scale Data Analysis: MapReduce vs. DBMS Benchmarks. Although the process to load data into and tune the execution of parallel DBMSs took much longer than the MR system, the observed performance of these DBMSs was strikingly better. Update 2: H-Store: A Next Generation OLTP DBMS is the project implementing the ideas in this paper: The goal of the H-Stor
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
Google Scalability Conference Trip Report: Scaling Google for Every User - Dare Obasanjo's weblog
Performing query inference in this manner is a very large scale, ill-defined problem. Other efforts Google is pursuing is cross language information retrieval. Specifically, if I perform a query in one language it will be translated to a foreign language and the results would then be translated to my language. This may not be particularly interesting for English speakers since most of the Web is i
Google Scalability Conference Trip Report: Lessons in Building Scalable Systems - Dare Obasanjo's weblog
Dare Obasanjo's weblog "You can buy cars but you can't buy respect in the hood" - Curtis Jackson Navigation for Google Scalability Conference Trip Report: Lessons in Building Scalable Systems - Dare Obasanjo's weblog Content Sidebar Footer These are my notes from the talk Lessons in Building Scalable Systems by Reza Behforooz. The Google Talk team have produced multiple versions of their applicati
Google Scalability Conference Trip Report: Using MapReduce on Large Geographic Datasets - Dare Obasanjo's weblog
Dare Obasanjo's weblog "You can buy cars but you can't buy respect in the hood" - Curtis Jackson Navigation for Google Scalability Conference Trip Report: Using MapReduce on Large Geographic Datasets - Dare Obasanjo's weblog Content Sidebar Footer These are my notes from the talk Using MapReduce on Large Geographic Datasets by Barry Brummit. Most of this talk was a repetition of the material in th
Google Scalability Conference Trip Report: MapReduce, BigTable, and Other Distributed System Abstractions for Handling Large Datasets - Dare Obasanjo's weblog
Dare Obasanjo's weblog "You can buy cars but you can't buy respect in the hood" - Curtis Jackson Navigation for Google Scalability Conference Trip Report: MapReduce, BigTable, and Other Distributed System Abstractions for Handling Large Datasets - Dare Obasanjo's weblog Content Sidebar Footer These are my notes from the keynote session MapReduce, BigTable, and Other Distributed System Abstractions
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