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Nowadays, it's hard to grow a business without being visible on social media. Studies have shown that companies can benefit from social media platforms because they can help them connect with larger audiences. Businesses can use social media to communicate with their communities and establish their presence in the industry. One of the best sites…
Cassandra入門ã¨ã€ã•ã‚‰ã«è©³ã—ã知るãŸã‚ã®ãƒªã‚½ãƒ¼ã‚¹é›†
クラウド時代ã®æ–°ã—ã„データベースã¨ã—ã¦ã€éžãƒªãƒ¬ãƒ¼ã‚·ãƒ§ãƒŠãƒ«ãªæ§‹é€ ã‚’æŒã¤NoSQLデータベースãŒè©±é¡Œã«ãªã£ã¦ã„ã¾ã™ï¼ˆNoSQLï¼Not Only SQL。命åã®çµŒç·¯ã¯ã“ã¡ã‚‰ï¼‰ã€‚ãã®NoSQLã®ä¸ã§ã€ã‚‚ã£ã¨ã‚‚注目ã•ã‚Œã¦ã„るデータベースã®1ã¤ãŒApacheã®Cassandraã§ã™ã€‚ Cassandraã¯ã€Facebookã§å¤§è¦æ¨¡ãƒ‡ãƒ¼ã‚¿å‡¦ç†ã®ãŸã‚ã«é–‹ç™ºã•ã‚Œã€ãã®å¾Œã‚ªãƒ¼ãƒ—ンソースã¨ãªã‚Šã€ç¾åœ¨ã§ã¯Apache Software Foundationã®ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã¨ã—ã¦é–‹ç™ºã•ã‚Œã¦ã„ã¾ã™ã€‚ ç¾åœ¨ã€Cassandraã¯Facebookã‚„Diggãªã©ã§ä½¿ã‚ã‚Œã¦ã„ã‚‹ã€ã‚‚ã—ãã¯ä½¿ã†ã“ã¨ãŒæ¤œè¨Žã•ã‚Œã¦ã„ã‚‹ã¨ã•ã‚Œã€Twitterã§ã‚‚（ツイートデータã®æ ¼ç´ã«ã¯ä½¿ã‚ã‚Œãªã„よã†ã§ã™ãŒã€ãれ以外ã®ç”¨é€”ã§ï¼‰åˆ©ç”¨ã•ã‚Œã¦ã„ã¾ã™ã€‚ Twitterã¨DiggãŒNoSQLã®ã€ŒCassandraã€ã‚’é¸ã¶ç†ç”± TwitterãŒã€Cassandr
Locking and transactions over Cassandra using Cages
Occasionally useful posts about RIAs, Web scale computing & miscellanea Introduction Anyone following my occasional posts will know that me and my team are working on a new kids game / social network called http://www.FightMyMonster.com. We are trying to break new ground with this project in many ways, and to support the data intensive nature of what we are trying to do we eventually selected the
Twitterã¯Cassandraã¸ã®æŠ•è³‡ã‚’続ã‘ã‚‹ - stanaka's blog
先週後åŠãらã„ã‹ã‚‰ã€Cassandra関連ã§è‰²ã€…å‹•ããŒã‚ã£ãŸã®ã§ã€ã¾ã¨ã‚ã¦ãŠãã¾ã™ã€‚ 一番注目ã•ã‚Œã‚‹Twitterã®Cassandraã¸ã®æ–¹é‡ã§ã™ãŒã€Twitterã®ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ãƒªãƒ³ã‚°ãƒ–ãƒã‚°ã®è¨˜äº‹ã§æ˜Žã‚‰ã‹ã«ã•ã‚Œã¦ã„ã¾ã™ã€‚ We're using Cassandra in production for a bunch of things at Twitter. A few examples: Our geo team uses it to store and query their database of places of interest. The research team uses it to store the results of data mining done over our entire user base. Those results then feed into thi
Cassandra : inverted index – Port twenty two
Cassandra is the only NOSQL datastore I’m aware of, which is scalable, distributed, self replicating, eventually consistent, schema-less key-value store running on java which doesn’t have a single point of failure. HBase could also match most of these requirements, but Cassandra is easier to manage due to its tiny footprint. The one thing Cassandra doesn’t do today is indexing columns. Lets
Hadoopソースコードリーディング第3回 (2010/06/28 Mon)
Tatsuya Kawano @tatsuya6502 #hadoopreading æ¥é€±æœˆæ›œã®ç™ºè¡¨å†…容「 HBase 㨠Cassandra -- トレードオフをç†è§£ã™ã‚‹ã€ã ã‘ã©ã€ã‚ˆã†ã‚„ãã¾ã¨ã¾ã£ã¦ããŸã€‚機能や性能ã®ã‚ˆã†ãªè¡¨é¢ä¸Šã®æ¯”較ã§ã¯ãªãã€è¨è¨ˆæ–¹é‡ã®é•ã„を紹介ã—ãŸã‹ã£ãŸã®ã ã‘ã©ã€è‡ªåˆ†ãªã‚Šã®çµè«–ã‚’å°Žã出ã™ã“ã¨ã¯æ„外ã«é›£ã—ã‹ã£ãŸ 2010-06-24 08:47:20
Cassandraインストールメモ - kj-ki’s blog
Hadoop(ã¨ã„ã†ã‹HBase)ã‚’å‹•ã‹ãã†ã¨ã—ãŸãŒï¼Œçµå±€HDFSãŒã†ã¾ãå‹•ã‹ãªã„． ã“ã®éš›ï¼ŒCassandraã«å¤‰æ›´ã ! ã¨ã„ã†ã“ã¨ã§ï¼Œlennyã«ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹ãªã‚‰æ¥½å‹ã®ãƒ¡ãƒ¢ï¼Ž apt-lineè¨å®š Cassandra用ã®apt-lineãŒç”¨æ„ã•ã‚Œã¦ã„ã‚‹ã®ã§è¿½åŠ ã™ã‚Œã°OK． # 今ã®ã¨ã“ã‚unstable用ã—ã‹ãªã„．ãŒï¼Œlennyã«å…¥ã‚Œã¦ã‚‚特ã«å•é¡Œã¯ãªã‹ã£ãŸï¼Ž # 「deb http://www.apache.org/dist/cassandra/debian unstable mainã€ã‚’追記 vi /etc/apt/sources.list # apt-keyã«è¿½åŠ gpg --keyserver wwwkeys.eu.pgp.net --recv-keys F758CE318D77295D gpg --export --armor F758CE318D77295D | apt-
Twitterã¨DiggãŒNoSQLã®ã€ŒCassandraã€ã‚’é¸ã¶ç†ç”±
スケーラブルãªãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚’実ç¾ã™ã‚‹æ‰‹æ®µã¨ã—ã¦ã€ŒSharding MySQL plus memcachedã€ãŒã‚ˆã知られる方法ã ã¨ã¯ã€1ã¤å‰ã®è¨˜äº‹ã€ŒMySQL+Memcachedã®æ™‚代ã¯éŽãŽã€ã“ã‚Œã‹ã‚‰ã¯NoSQLãªã®ã‹ã€ã«ã¤ã„ã¦ã®è°è«–ã€ã§ç´¹ä»‹ã—ã¾ã—ãŸã€‚ ã¡ãªã¿ã«ã€ŒShardingã€ï¼ˆã‚·ãƒ£ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ï¼‰ã¨ã¯è¤‡æ•°ã®ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã«ãƒ‡ãƒ¼ã‚¿ã‚’分散ã—ã¦é‹ç”¨ã™ã‚‹ã“ã¨ã§ã€ã–ã£ãã‚Šã„ãˆã°Shared Nothingçš„ãªåˆ†æ•£ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹æ§‹æˆã®ã“ã¨ã§ã™ï¼ˆã“ã®è¨˜äº‹ã§ç´¹ä»‹ã™ã‚‹è‹±æ–‡ä¸ã«ã¯ã€ŒShared MySQLã€ï¼ˆå…±æœ‰MySQL）ã¨ã®è¨˜è¿°ãŒã‚ã‚Šã¾ã™ãŒã€ã“ã‚Œã¯æらã「Sharded MySQLã€ï¼ˆShardã•ã‚ŒãŸMySQL）ã®ãƒŸã‚¹ã‚¹ãƒšãƒ«ã§ã¯ãªã„ã¨æŽ¨æ¸¬ã—ã¾ã™ï¼‰ã€‚ 日本ã§ï¼ˆãŸã¶ã‚“）もã£ã¨ã‚‚MySQLã«ã¤ã„ã¦è©³ã—ã解説ã—ã¦ã‚るブãƒã‚°ã€Œæ¼¢(オトコ)ã®ã‚³ãƒ³ãƒ”ュータé“ã€ã®ã‚¨ãƒ³ãƒˆãƒªã€Œã•ã‚‰ã«MySQLを高速化ã™ã‚‹7ã¤ã®æ–¹æ³•ã€ã§ã¯ã€Sh
Introduction to Cassandra (June 2010)
This document provides an overview of Apache Cassandra, including its origins from Amazon Dynamo and Google BigTable, its data model using a ring topology and column families, and how it provides horizontal scalability and eventual consistency through replication. It discusses Cassandra's write path using commit logs and memtables as well as its read path involving caching. It also covers client a
Apache Cassandra | Apache Cassandra Documentation
What is Apache Cassandra? Apache Cassandra is an open source NoSQL distributed database trusted by thousands of companies for scalability and high availability without compromising performance. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure make it the perfect platform for mission-critical data.
WTF is a SuperColumn? An Intro to the Cassandra Data Model — Arin Sarkissian
For the last month or two the Digg engineering team has spent quite a bit of time looking into, playing with and finally deploying Cassandra in production. It’s been a super fun project to take on – but even before the fun began we had to spend quite a bit of time figuring out Cassandra’s data model… the phrase “WTF is a ’super column’†was uttered quite a few times. If you’re coming from an RDBM
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Google Code Archive - Long-term storage for Google Code Project Hosting.
https://jp.techcrunch.com/2010/07/11/20100709twitter-analytics-mysql/
RDF::Cassandra - Apache Cassandra Storage Adapter for RDF.rb
GitHub - rantav/hector: a high level client for cassandra
ericflo's twissandra at master - GitHub
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