Pantheon recognized as Managed Hosting leader in G2 Grid® Report Learn more
Pantheon recognized as Managed Hosting leader in G2 Grid® Report Learn more
IoTããã¼ã¿ãµã¤ã¨ã³ã¹çã§ãã¼ã¿è§£æã®è©±ãããã¨ãã«ããã¼ã¿ãä¿åããæ¹æ³ã¨ãã¦æ¢åã®ãªã¬ã¼ã·ã§ãã«DBã«å ãã¦NoSQLã®è©±ãèãããã«ãªã£ã¦ãã¾ããã 身è¿ãªã¨ããã§ã¯Netflixã®ã¬ã³ã¡ã³ãã·ã¹ãã [â»1] ããããªã³ [â»2] ãªã©ã§ãã·ã¹ãã ã®ãã¼ã¿ãã¼ã¹ãµã¼ãã¼ã¨ãã¦å©ç¨ãããããã§ãããä»åã¯NoSQLã«åé¡ããããã¼ã¿ãã¼ã¹ã®ä¸ã«ããã¦äººæ°ã®é«ã [â»3] Cassandraã«ã¤ãã¦ç´¹ä»ãã¾ãã Cassandraã¯2007å¹´ Facebook社ã®ã¨ã³ã¸ãã¢ã«ãã£ã¦éçºããã¾ããã ãã®å¾Apache Software Foundation ã®ããã¸ã§ã¯ãã¨ãªããæé·ãç¶ã2017å¹´2æã«ãã¼ã¸ã§ã³3.10ããªãªã¼ã¹ããã¾ããã NoSQLã¨ããã¨ãå°ãåãã¤ãã«ããã¤ã¡ã¼ã¸ãããã¾ãããCassandraã¯ããã¼ãã«ã«ãã¼ã¿ãæ ¼ç´ãCQLã¨ããSQLã®ãããªã¯ã¨ãªè¨
ã¯ããã« Futureã¢ããã³ãã«ã¬ã³ãã¼15æ¥ç®ãæ å½ããã¦é ãã¾ãã æ¨ä»ããã°ãã¼ã¿ã¨ããè¨èããã£ãã浸éããã¨ã³ã¿ã¼ãã©ã¤ãºã§"NoSQL"ãè³ã«ãããã¨ãå¢ãã¾ããã æ¬è¨äºã§ã¯NoSQLãã¿ã¨ãã¦"Cassandra"ãç´¹ä»ãã¤ã¤ãNoSQL(KVS)ã®ãã¼ã¿ã¢ãã«ã®æ¤è¨ãã¤ã³ããä¼ãããããè¯ããªã¨æãã¾ãã ãããã"NoSQL"ã¨ã¯ä½è ãèãã¦ã¿ã Cassandraã®è©±ãããåã«ãã¾ãã¯ãããã"NoSQL"ã¨ã¯ä½è ãªã®ããèãã¦ã¿ã¾ãããã NoSQLã¨ã¯ ãNot only SQLããèªæºã¨ãã¦ãã ãSQLã ãã§ãªã = éRDBãã¨ããæå³ã§è§£éããããã¨ãå¤ãã§ãã ã¨ã³ã¿ã¼ãã©ã¤ãºã·ã¹ãã ã§ã¯RDB(ãªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹)ãå¤ãæ¡ç¨ããã¦ãã¾ãã ãã®çç±ã¯ä¸è¨ã§ã¯è¨ãå°½ããã¾ãããããã¼ãã«çµåã«ãã£ã¦SQLã§è¤éãªãã¸ãã¹ãã¸ãã¯ã 表ç¾åºæ¥ãã
ã¯ããã«ããã«ã¡ã¯ãTechnology Innovation Groupæå± DBãã¼ã ã®å²©å´ã§ãã ç§ã¯DBãã¼ã ã¨ãã¦æ§ã ãªããã¸ã§ã¯ãã§OracleãPostgreSQLãªã©RDBã®è¨è¨ã»æ§ç¯ã«æºãã£ã¦ãã¾ããã ç¾å¨ã¯ãCassandraã®å°å ¥ã¨ãã¼ã¿ã¢ãã«ãè¨è¨ãã¦ãã¾ãã æ¬ç¨¿ã§ã¯DBãã¿ã¨ãã¦RDBè³ããè±å´ãã¦ãKVSãªãã§ã¯ã®ãã¼ãã«è¨è¨ã®åæããä¼ããããã¾ãã Cassandraã¯ã©ã®ãããªãã¼ã¿ãã¼ã¹ãªã®ãCassandraã¯KVSï¼Key Value Storeï¼ã¨å¼ã°ããKeyã¨Valueãçµã¿åãããåç´ãªæ§é ãããªãDBã§ãã ãã¼ã¿ã¢ã¯ã»ã¹ã¯keyã«å¯¾ãã¦è¡ããKeyã«é¢é£ä»ããããValueãå¼ã³åºããã¾ãã KVSã¯ä¸è¬çã«ã¹ãã¼ãã¬ã¹ãæ¡ç¨ãããã¨ãå¤ãã¨æãã¾ãããCassandraã§ã¯ã¢ããªã±ã¼ã·ã§ã³ã®è¦³ç¹ããè¦ã¦ããã¼ã¿ã¯æ§é çã«æ±ããæ¹ãé
NoSQLããã«ã¦ã§ã¢ã®ç¹å¾´ãããå°ãç´°ããæãã¦ã¿ã¾ããåéã®é½åãããåå¥ã«ã¯è§¦ãã¾ããããããããã®NoSQLããã«ã¦ã§ã¢ã§å·®å¥åé¨åã«é¢ãã¦ã¯ããªã詳細ã«èª¬æãããã¦ãã¾ãã®ã§ããã²ãã¡ããåç §ãã¦ã¿ã¦ãã ããã é«éã«åä½ãã ãªã¬ã¼ã·ã§ã³ã¢ãã«ã§ã¯ãªããã¼ã¿ã¢ãã« ã¹ã±ã¼ã«ã¢ã¦ãåã¢ã¼ããã¯ã㣠ã³ã¢ãã£ãã£ãµã¼ãã«ãã£ã¦æ§ç¯ããã ã¹ãã¼ãããªã¼ SPOFï¼åä¸æ éç¹ï¼ãæããªã èªåçã«è¤æ°å°ã¸ã¬ããªã±ã¼ã·ã§ã³ãã ã¤ãã³ãã¥ã¢ã«ã³ã³ã·ã¹ãã³ã·ã¾ãã¯ä¸è²«æ§ã®é¸æãå¯è½ SQLã®ãããªå¼·åãªã¯ã¨ãªè¨èªãæãããã·ã³ãã«ãªåãåããããã§ããªã Cassandraã¨ã¯ä½ã NoSQLããã«ã¦ã§ã¢ã®çé ã¨ããã°Google BigTableãAmazon Dynamoã§ããããªã¼ãã³ã½ã¼ã¹ã®ä¸çã§ããããããªãã®ãåºã¦ãã¦ãã¾ãããã®ä¸ã§ãæè¿ç¹ã«æ³¨ç®ãéãã¦ããã®ããApach
ã©ã³ãã³ã°
ã©ã³ãã³ã°
ã©ã³ãã³ã°
ãªãªã¼ã¹ãé害æ å ±ãªã©ã®ãµã¼ãã¹ã®ãç¥ãã
ææ°ã®äººæ°ã¨ã³ããªã¼ã®é ä¿¡
å¦çãå®è¡ä¸ã§ã
j次ã®ããã¯ãã¼ã¯
kåã®ããã¯ãã¼ã¯
lãã¨ã§èªã
eã³ã¡ã³ãä¸è¦§ãéã
oãã¼ã¸ãéã
{{#tags}}- {{label}}
{{/tags}}