Java 11 Support in Apache Cassandra 4.0
At the end of July, support for Java 11 was merged into the Apache Cassandra trunk, which will be shipped in the next major release, Cassandra 4.0. Prior to this, Cassandra 3.0 only ran using Java 8, since there were breaking changes in Java that prevented it from run on later versions. Cassandra now supports both Java 8 and 11. To run Cassandra on Java 11, you’ll need to first download an early a
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※2013/03/05ã«è¿½è¨˜ Yuki Morishita(@yukim)ã•ã‚“より以下ã®ã‚¨ãƒ³ãƒˆãƒªã«ã¤ã„ã¦ã‚¢ãƒ³ã‚µãƒ¼ã‚’è²°ã„ã¾ã—ãŸï¼ï¼ï¼ https://gist.github.com/yukim/5086476 - ãªã‚“ã‹å‘Ÿã„ãŸã‚‰ã€Œm9(^Д^)ﾌﾟｷﾞｬｰã€ãªæ„味ãªã®ã‹RTã¨ã‹ãŒã¤ã„ãŸã®ã§ã€ã¾ã¨ã‚ã¦ãŠã“ã†ã€‚ãã£ã¨ã€Œã“れやれã°è§£æ±ºã™ã‚‹ã®ã«ãƒ»ãƒ»ãƒ»ãƒ—ークスクスï¼ã€ã£ã¦æ•™ãˆã¦è²°ãˆã‚‹ã«é•ã„ãªã„。åŠåˆ†ãらã„僕ã®æŠ€è¡“力ã®ä½Žã•ã‹ã‚‰æ¥ã¦ã„ã‚‹ã®ãŒå¤šã„ã®ã§ã€Cassandra特有ã®å•é¡Œã‹ã‚‰å¤–ã‚Œã¦ã„ã‚‹æ°—ãŒã™ã‚‹ã‘ã©æ°—ã«ã—ãªã„。 å‰ææ¡ä»¶ã¨ã—㦠HW：CPU12core メモリ64GB Disk:SSDã‚„HDD(RAID10)を使用（詳細ãªæ§‹æˆã¯å‰²æ„›ï¼‰ Cassandra 1.1.5 JDK 1.6.0_33-1 Simple Strategyを使用 1ノード辺り100〜200GB程度ã®ãƒ‡ãƒ¼ã‚¿ã‚’想定 クラスタã®æ•°ã¨ã‹ã¯
Cassandraクラスタã¨ã€DataStax OpsCenterã®æ§‹ç¯‰ | ã•ã¶ã¿ã£ã¨ï¼JAPAN
Cassandraã®ã‚¯ãƒ©ã‚¹ã‚¿ç’°å¢ƒã‚’構築ã—ã¦ã€DataStax OpsCenterã§ãƒ‡ãƒ¼ã‚¿ã®ç®¡ç†ãŒã§ãるよã†ã«ã—ã¾ã™ã€‚ Cassandraã®è¨å®šæ–¹æ³•ã®ã‚µãƒ³ãƒ—ルを載ã›ã¦ã„ã‚‹blogãªã©ã¯æ²¢å±±ã‚ã‚‹ã®ã§ã™ãŒã€æ—§ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã®Cassandraを試ã—ã¦ã„る記事ãŒå¤šãã¦ã€é »ç¹ã«ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‚¢ãƒƒãƒ—ã™ã‚‹Cassandraã«æƒ…å ±ãŒè¿½ã„ã¤ã„ã¦ã„ã¾ã›ã‚“。 ã“ã“ã§ã¯ã€æ–°ã—ãCassandraを試ã—ã¦ã¿ãŸã„æ–¹ã«å‚考ã«ãªã‚Œã°ã¨è€ƒãˆã¦è¨˜äº‹ã‚’書ãã¾ã—ãŸã€‚ ã¾ãŸã€DataStax OpsCenterã¨ã„ã†ãƒ„ールを利用ã—ã¦ã€ãƒ‡ãƒ¼ã‚¿ã®å¯è¦–化ã«ã‚‚挑戦ã—ã¦ã„ã¾ã™ã€‚ Cassandraã¨ã¯ å…¬å¼ãƒšãƒ¼ã‚¸ï¼šhttp://cassandra.apache.org æ£å¼å称ã¯Apache Cassandraã§ã™ã€‚ Wikiより引用 『Cassandraã¯ã€éžå¸¸ã«é«˜ã„スケーラビリティーをæŒã¡ã€ã‚¤ãƒ™ãƒ³ãƒãƒ¥ã‚¢ãƒ«ã‚³ãƒ³ã‚·ã‚¹ãƒ†ãƒ³ãƒˆãªåˆ†æ•£ã‚·ã‚¹ãƒ†ãƒ æ§‹é€ ã®KVS
Cassandra vs. Redis
This document compares Cassandra and Redis for use as a backend for a Facebook game with 1 million daily users and 10 million total users. Redis was chosen over Cassandra due to its simpler architecture, higher write throughput, and ability to meet the capacity and performance requirements using a single node. The Redis master handled all reads and writes, with a slave for failover. User data was
Eclipse上ã§Cassandraを実行ã™ã‚‹
Eclipseã§Cassandraを実行ã™ã‚‹ãŸã‚ã®ãƒ¡ãƒ¢ã€‚ è¦Ant, Maven Eclipseã«Cassandraã‚’ãƒãƒ¼ãƒ‰ 1. ソースを展開 2. ant build 3. ant generate-eclipse-files 4. File->Import->Existing Project into Workspace... Run->Run Configuration...を実行ã—ã€Main classã« org.apache.cassandra.thrift.CassandraDaemon を指定ã™ã‚‹ã€‚ VM argumentsを以下ã®ã‚ˆã†ã«æŒ‡å®šã€‚ VM arguments: -ea アサーションを有効ã«ã™ã‚‹ -Xmx96M 最大ヒープを96Mã«ã™ã‚‹ -Dcom.sun.management.jmxremote.port=7199 JMX portã‚’7199ã«ã™ã‚‹ -Dcom.
Cassandraé‹ç”¨ã«æ´»èºã—ãŸã‚¹ã‚¯ãƒªãƒ—トãŸã¡ : toda_k
弊社検証環境ã§åŠå¹´ã»ã©10æ•°å°è¦æ¨¡ã®Cassandraクラスタをé‹ç”¨ã—ã¦ããŸã®ã§ã™ãŒã€é‹ç”¨ã«ä½¿ã£ã¦ã„るスクリプトãŒã‚る程度固ã¾ã£ã¦ããŸã®ã§ã¾ã¨ã‚ã¦ã¿ã¾ã™ã€‚æ›´ãªã‚‹ç°¡ç´ 化・便利化を進ã‚ã‚‹ãŸã‚ã®æ£šå¸ã—ã¨ã„ã†æ„Ÿã˜ã§ã™ã€‚å¤ã„ã‚‚ã®ã‚‚æ··ã–ã£ã¦ã„ã¦è‹¥å¹²ç”³ã—訳ãªãã¯ã‚ã‚‹ã®ã§ã™ãŒâ€¦â€¦ã©ãªãŸã‹ã®å½¹ã«ç«‹ã¦ã°å¹¸ã„ã§ã™ã€‚ã§ã¯è¦‹ã¦è¡Œãã¾ã—ょã†ã€‚ スクリプトã®é‹ç”¨ä½“制ã«ã¤ã„㦠ã™ã¹ã¦ã®ã‚¹ã‚¯ãƒªãƒ—トã¯Subversionã§ç®¡ç†ã•ã‚Œã€ä¸»ã«Jenkinsã«ã‚ˆã£ã¦è‡ªå‹•çš„ã«å®Ÿè¡Œã•ã‚Œã¾ã™ã€‚多数ã®ãƒŽãƒ¼ãƒ‰ã«å¯¾ã™ã‚‹åŒæ™‚処ç†ã‚’è¡Œãªã†ãŸã‚ã«GNU Parallelを使ã†ã“ã¨ãŒã‚ã‚Šã¾ã™ã€‚ ã¾ãŸCassandraサーãƒã¯AWS EC2上ã§é‹ç”¨ã•ã‚Œã¦ã„ã‚‹ãŸã‚ã€AWS SDK for Rubyã«ã‚ˆã£ã¦IPアドレスã®å–å¾—ãªã©ã‚’è¡Œãªã£ã¦ã„ã¾ã™ã€‚ å„ノードã§ã®nodetool ring実行çµæžœã‚’集約 クラスタãŒä¸å®‰å®šãªã¨ãã€å®Ÿéš›ã¯å‹•ã„ã¦ã„ã‚‹ã®ã«ä¸€éƒ¨ã®ãƒŽãƒ¼ãƒ‰ã‹
Leveled Compaction in Apache Cassandra | Datastax
Introduction to Compaction Cassandra's log-structured storage engine enables Cassandra's amazing performance and features like application-transparent compression by turning all updates into data files called sstables that are written sequentially to disk. No update-in-place is done (because that would require doing random i/o); instead, a new version of the columns being inserted or updated is wr
What's New In Cassandra 1.0 | DataStax
What’s New in Cassandra 1.0: Improved Memory and Disk Space Management Cassandra 1.0 incorporates several improvements to how Cassandra's storage engine manages memory and disk space, bringing better performance and addressing some of the most common pain points for Cassandra administration. Off-heap row cache Cassandra provides a built-in row cache for super-fast access to frequently requested da
What’s new in Cassandra 1.0: Performance | Datastax
As we've worked towards 1.0 over the past year, Cassandra's performance has improved spectacularly. Compared to the current release this time in 2010, we've increased our write performance a respectable 40%. But the real area we wanted to focus on improving was read performance, which we succeeded in increasing a phenomenal 400%! Reads There are actually two different execution paths for reads in
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What’s new in Cassandra 1.0: Compression | Datastax
https://skydrive.live.com/fullscreen?cid=d105615a0f594518&sc=documents&resid=D105615A0F594518!144&filename=Cassandra_Counter.pptm&wx=p&wv=s&wc=officeapps.live.com&wy=y
GitHub - edanuff/CassandraCompositeType: CompositeType for composite column names in Cassandra
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