Google is embarrassed about its AI Overviews, too. After a deluge of dunks and memes over the past week, which cracked on the poor quality and outright misinformation that aroseâ¦
Integration of Hadoop and MongoDB, Big Dataâs Two Most Popular Technologies, Gets Significant Upgrade | 10gen, the MongoDB company MongoDB Connector for Hadoopã¯ãHadoopã¸ã®å ¥åºåãã¼ã¿ã¨ãã¦MongoDBã使ããããã«ããã½ããã¦ã§ã¢ã§ãæ°ãã¼ã¸ã§ã³ã§ã¯ä¸»ã«ä»¥ä¸ã®æ©è½ã追å ããã¦ãã¾ãã Apache HiveããMongoDBã®ãã¼ã¿ã¸SQLã©ã¤ã¯ãªåãåãã ã¤ã³ã¯ãªã¡ã³ã¿ã«ãªMapReduceã¸ã§ãã®ãµãã¼ãã«ãããã¢ãããã¯ãªåæã容æã«å®ç¾ MongoDB BSONãã¡ã¤ã«ãHadoop Distributed File Systemï¼HDFSï¼ä¸ã«ä¿åãããã¨ã§ããã¼ã¿ã®ç§»åãåæ¸ ããã«ãã以ä¸ã®ãããªã¡ãªããã
ååã®MongoDB 2.4 ã®æ§è½ å¾¹åºè©ä¾¡ã®åé¿ã大ããã£ãã®ã§ç¶ç·¨ã ä»åã®èª¿æ»å¯¾è±¡ ããã¥ã¡ã³ããµã¤ãºæ¯ã®æ§è½ãè©ä¾¡ããã ä»åã®æ¤è¨¼ç¨ã«ãã³ããæ¸ããã æ§è½è¦ç©ãã«ã使ããã¨æãã®ã§ãç´¹ä»ãã¦ããã¾ãã MongoDB-JP/mongo_bench ä»åã®æ¤è¨¼ããSakura VPS 2G ã§è¡ã£ãã å°ç¨ç°å¢ã§ã¯ãªãã®ã§ãããç¨åº¦ã¾ããã®å½±é¿ãåãã¦ãããï¼ä½åº¦ããã³ããåã£ã¦æ¥µåæé¤ã¯ãããããï¼ ã¾ããè¨äºã«è¼ãã以å¤ã«ãè²ã ã¨æ¤è¨¼ãã¦ããããã®çµæãå°ãæ··ãã£ã¦ããããã ãªã³ã¡ã¢ãªãã¼ã¿ã®å¦çãé«éãªäºã¯è§£ã£ã¦ããã®ã§ ä»åã®æ¤è¨¼ã®èã¯ããã£ã¹ã¯ã¢ã¯ã»ã¹ã MongoDBã¯ã¡ã¢ãªä»¥ä¸ã®ãã¼ã¿ãæ±ãçºã®ãããã¯ããªã®ã§ãªãã¹ãæ§è½ãåºãªãæ§ãªæ¡ä»¶ï¼ã¯ã¼ã¹ãã±ã¼ã¹ãçã£ãã 2GBã¡ã¢ãªã«å¯¾ãã¦40GBã®ãã¼ã¿ãæ±ãããã¼ã¿å ¨ä½ãä¸éãªã使ããããªã¯ã¨ãªã¼ãçºè¡ããã è©
MongoDBã¤ã³ã»ã¢ã¯ã·ã§ã³ ä½è : Kyle Banker,Skyæ ªå¼ä¼ç¤¾çå·ç«å¸åºç社/ã¡ã¼ã«ã¼: ãªã©ã¤ãªã¼ã¸ã£ãã³çºå£²æ¥: 2012/12/14ã¡ãã£ã¢: 大åæ¬è³¼å ¥: 5人 ã¯ãªãã¯: 55åãã®ååãå«ãããã° (4件) ãè¦ã MongoDBéè¨æ©è½ CentOSã§Nginxã®ãã°ãFluentdã使ã£ã¦Mongodbã«ãªã¢ã«ã¿ã¤ã ã§æ ¼ç´ãã - Yuta.Kikuchiã®æ¥è¨ æ給3000åã®CEOã¨æ¶æããã¦ãã@yutakikucã§ããä»æ¥ã¯ç°¡åã«Mongodbã®ãã°éè¨æ©è½ãç´¹ä»ãã¾ããæ©è½ãè±å¯éãã¦æ³£ãã¦ãããã§ããã°è§£æãã人ã¯æ¯é使ã£ã¦ã¿ã¦ä¸ãããFluentdã§Mongodbã«Nginxã®Logãæµãè¾¼ãè¨å®ã¯ä¸ã®ã¨ã³ããªã¼ãåç §ãã¦ä¸ããã次åã¯AggregationFramework/MapReduceå¨ãã«ã¤ãã¦è§¦ãããã¨æãã¾ãã æ³£ãã話 : é
MongoDBã§ã®éè¨å¦çã®æ¦è¦ ä¸è¬çãªNoSQLãããã¯ãã¯ãRDBã®SQLã§ããGroup Byå¥ãSumé¢æ°ãªã©ã®éè¨æ©è½ãããã¾ãããéè¨ãå®æ½ããã«ã¯ãã¢ããªã±ã¼ã·ã§ã³å´ã§ç¬èªã«ã³ã¼ããæ¸ããã¨ã«ãªãã¾ãã ããããMongoDBã¯ãNoSQLã®ããã©ã¼ãã³ã¹ãç¶æããªãããRDBã©ã¤ã¯ãªæ©è½ãå®è£ ãããã¨ãéçºæ¹éã¨ãã¦æ²ãã¦ãããéè¨æ©è½ã«é¢ãã¦ããã¡æ©ãå®è£ ãã¦ãã¾ãããMongoDBã§éè¨å¦çãè¡ãæ¹æ³ã¯3ã¤ããã¾ãã 1. Aggregationãã¬ã¼ã ã¯ã¼ã¯ SQLã§ããGroup Byå¥ãSumé¢æ°ãæä¾ãã¾ããMongo Shellããã¯ã¨ãªã¨åãããã«å®æ½ã§ãã¾ããä¸é¨ã®å¦çï¼$groupã¨$sortï¼ã¯ã·ã£ã¼ãã£ã³ã°ã«å¯¾å¿ãã¦ãããåã·ã£ã¼ãã§å¦çãã¾ãã 2. MongoDBã®Map/Reduceæ©è½ Mapé¢æ°/Reduceé¢æ°ãç¬èªã«å®ç¾©ããéè¨å¦çã
ä»åã¯ãMongoDB v2.2ãªãªã¼ã¹ãã¼ãããã¨ã«v2.2ã§è¿½å /æ¹åãããæ©è½ãç´¹ä»ãã¾ããæ©è½ã«ã¤ãã¦ãã詳ããç¥ãããæ¹ã¯ç¬¬3å丸ã®å åå¼·ä¼ã®è³æãåç §ãã ãããã³ãã³ãã¬ãã«ã§ã®æé ããä¸é¨æ©è½ã®æ¤è¨¼ãè¼ã£ã¦ãã¾ãã æ°æ©è½ãã¤ã¸ã§ã¹ã 1ï¼ä¸¦åå¦çã®å¼·åï¼Concurrency Improvementsï¼ ããã¯ã®ç²åº¦ãGlobalããã¯ããDBããã¯ã«ãªãã¾ããã PageFaultã¢ã¼ããã¯ãã£ãæ¹åããããã¯æéãæ¸ãã¾ããã 2ï¼Aggregation Framework éè¨å¦çãã³ãã³ãã§å¯è½ã«ãªãã¾ããã 3ï¼Replica Setsã®Readãã¼ãé¸æ ä¸è²«æ§ã¬ãã«ã«å¿ãã¦ãã©ã®ãã¼ããããã¼ã¿ãReadããããé¸æå¯è½ã«ãªãã¾ããã 4ï¼Tagã使ç¨ããShardingï¼Improved Data Center Awarenessï¼ ãã¼ã¿ä¿åå ã®Shard
mViewerã¯Webãã¼ã¹ã®ã·ã³ãã«ãªMongoDB管çã¤ã³ã¿ãã§ã¼ã¹ã§ãã æè¿ã¯NoSQLãéç¨ã®ä¸é¨ã«ä½¿ããã¨ãå¢ãã¦ãã¾ããããããªãã¨å¿ è¦ã«ãªãã®ã管çãã¼ã«ã§ããããã«ä½¿ãã¦æ軽ãªãã®ãè¯ããã°mViewerã使ã£ã¦ã¿ã¾ããããèµ·åã³ãã³ããç¨æããã¦ãã¦ç°¡åã§ãã ããããã¼ã¸ã§ãããã°ã¤ã³ãã¾ãã ãã°ã¤ã³ãã¾ãããå·¦å´ã«ãã¼ã¿ãã¼ã¹ã並ãã§ãã¾ãã ãã¼ã¿ãã¼ã¹ãé¸æããã¨ã³ã¬ã¯ã·ã§ã³ã表示ããã¾ãã ã³ã¬ã¯ã·ã§ã³ã¯ããªã¼ãã¼ãã«ã§è¡¨ç¤ºãã§ãã¾ãã ãµã¼ãã®ç¶æ³è¡¨ç¤ºã ãã¼ã¿ãã¼ã¹ã®ç¶æ³è¡¨ç¤ºã ããªã¼ãéãã¦ããã«å é¨ã®å¤ã確èªã§ãã¾ãã Flashãã¼ã¹ã®å©ç¨ç¶æ³ã¢ãã¿ãªã³ã°ã æ°ãããã¼ã¿ãã¼ã¹ã®ä½æãã§ãã¾ãã ã³ã³ãã¯ã¹ãã¡ãã¥ã¼ã ãã¢åç»ã§ãã mViewerã¯ãã¼ã¿ãã¼ã¹ã®ä½æãåé¤ãã³ã¬ã¯ã·ã§ã³ã®ä½æãæ´æ°ã¨åé¤ãGridFSãã¡ã¤ã«ã®è¿½å ã表示ããã¦ã³
Linux File Systems MongoDB uses large files for storing data, and preallocates these. These filesystems seem to work well: ext4 ( kernel version >= 2.6.23 ) xfs ( kernel version >= 2.6.25 ) In addition to the file systems above you might also want to (explicitly) disable file/directory modification times by using these mount options: noatime (also enables nodiratime) We have found ext3 to be very
MongoDBã¯ãSQLãã¼ã¿ãã¼ã¹ã«è¿ãNoSQLã§ããããã¥ã¡ã³ããã¼ã¿ãã¼ã¹ããã¼ã»ããªã¥ã¼åãã¼ã¿ã¹ãã¢ï¼key-valueã¹ãã¢ï¼ããªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹ï¼RDBï¼ã®è¯ãã¨ãåããç®æãã¦ãã¾ãã使ãåæãRDBã«è¿ãã¨ããã¾ãã MongoDBã®ãã¼ã¿ãã¼ã¹æ§é MongoDBã¯ããã¼ã¿ãã¼ã¹ãã³ã¬ã¯ã·ã§ã³ãããã¥ã¡ã³ãã¨ããé層æ§é ã«ãªã£ã¦ãã¾ãï¼å³1ï¼ãã³ã¬ã¯ã·ã§ã³ã¯RDBã§ã¯ããã¼ãã«ã«ç¸å½ãããã®ã§ãã RDBã¨éããMongoDBã§ã¯ã¹ãã¼ããä¸è¦ã§ããRDBã§ã¯ãã¼ãã«ã®åè¡ï¼ã¬ã³ã¼ãï¼ããã©ã®ãããªãã¼ã¿ãã©ã®é ã«æã£ã¦ããããæåã«å®ç¾©ããå¿ è¦ãããã¾ããã¾ããåã¬ã³ã¼ãã¯ã¹ãã¼ãã§å®ç¾©ãããå ±éã®æ§é ãæã£ã¦ãã¾ãã ã¨ããããMongoDBã®ã³ã¬ã¯ã·ã§ã³ã¯ã¹ãã¼ãã¬ã¹ã§ãããã¬ã³ã¼ãã«ç¸å½ããããã¥ã¡ã³ãã¨ãããã¼ã¿ãä¿æãã¦ãã¾ãããä¸ã¤ã²ã¨ã¤ã®ããã¥
æè¿ãå²ã¨å¤§ãããªãã¼ã¿ãRã§æ±ãéã«ãã©ã®ãããªã½ãªã¥ã¼ã·ã§ã³ããããè²ã ã¨èãã¦ãã¾ãã ããã§ã®ã½ãªã¥ã¼ã·ã§ã³ã¯ä¸¦åè¨ç®äºã ã¨ãã観ç¹ã§ã¯ãªãã大ããã®ãã¼ã¿ããå¿ è¦ãªãã¼ã¿ããã£ããã¨ç¨æãã¦ã解æãã§ã¼ãºã«ç°¡åã«å ¥ã£ã¦ããããã«ãã¨ãã観ç¹ã§ãã 1ã¤ã¯æåãããbigmemoryã¨ããã½ãªã¥ã¼ã·ã§ã³ããã£ã¦ãããã¯ä»å¾æµ¸éãã¦ãããã ãããªãã¨ã¯æãã¤ã¤ãbigmemoryã§ã¯ãã¼ã¿åãbig.matrixã¨ããç¹æ®ãªãã®ã«ãªã£ã¦ãã¾ãã®ã§ãæ¢åã®Matrixãdata.frameã使ã£ãããã±ã¼ã¸ã®é¢æ°ã使ããªããªã£ã¦ãã¾ã*1ã¨ããç¹ãå¾®å¦ã ãªãã¨æã£ã¦ãã¾ãã ãããªæã«ãTwitterã®timellineãçºãã¦ããããMongoDBã®R driverãã§ããã¨ãããtweetãè¦ããã¾ããã MongoDBã¯ããªãæè»ã«è²ã ã§ãã¾ãããä½ããä»ã¢ãããããã¯ã®ï¼ã¤ã§ã
The document discusses NoSQL databases and MongoDB in particular. It provides examples of MongoDB documents with different data types like objects, arrays, etc. It also shows how data is stored across multiple shard servers and accessed via mongos query routers. Configuration servers store sharded cluster metadata. Log data can be stored in MongoDB but only aggregated results data may be needed. H
åæ(æ稿æ¥ï¼2011/11/07)ã¸ã®ãªã³ã¯ æè¿ãMongoDB ã«é¢ãã¦é常ã«å¥½ã¾ãããªãå 容ã®ããªã話é¡ã«ãªã£ãå¸å ´å ±åãï¼ã¤ãã£ããæ¹å¤ã®å¤§é¨åã¯ãããã©ã¼ãã³ã¹åé¡ã¨ãã¼ã¿æ失ã®çµåãã«éä¸ãã¦ããããã®è©±ãç¶ããåã«ããããã¯å ¬å¼ã®äºä¾ç 究ã§ãªããã¨ãèã«å½ãã¦æ¬²ãããããã§ã¯ãªãã¦ãæè¿ MongoDBã使ã£ãéçºãã¼ã ã«ããå¸å ´å ±åã§ããã ã¾ã Urban Airshipã® Michael Schurteræ°ã®ã¬ãã¼ãããå§ããã Urban Airshipã¯æ¢ã«ãMongoDBã®åé¡ãçµé¨ãã¦ããããã®ã¬ãã¼ããæ¸ãåã«ãã¼ã¿ã®ã»ã¨ãã©ã PostgreSQLã«ç§»è¡ãæ¸ã¾ãã¦ãããæ®ã£ããã¼ã¿ã¯MongoDBã«ã¨ã£ã¦çæ³çã®ããã ã çå½ï¼ããããã失ã£ã¦ããçãéãµã¼ãã¹ä½ä¸ãçµé¨ãããã å£æ» çã§ã¯ãªã å°ããï¼å®¹æã«ã¡ã¢ãªã¼ã«åã¾ã(~15 GB) äºæ¬¡ç´¢å¼ï¼ã
ãã£ããæ±äº¬Nodeå¦åç¥2011ã«åºããã Google Developer Day 2011 ã«åºãããã¦ããã®ã§ã ä½ãã¢ããªãä½ããã¨æã£ã¦ä½ã£ã¦ã¿ã¾ããã http://yosuketest.node-ninja.com/ nodefestã§ã¢ã«ã¦ã³ããããã£ãNodeNinjaä¸ã§åãã¦ãã¾ãã WebSocketãåãã®ã¯ããæãã ãã ããGoogle Developer Days ã§ã NodeFestã§ãHTMLã§ãã¬ã¼ã³ããã¦ããã®ã§ãèªåããã£ã¦ã¿ããã¨æã å®æ½ãã¦ã¿ã¾ããã ãã¬ã¼ã³ããã¨ãã«è´è¡ã®æ¹ã ããã®å ´ã§çåã«æã£ããã¨ãã³ã¡ã³ããä»ç®ã«ãã¦ç´æ¥è³æã«åæ ããäºãã§ãã¾ãã ããã«ã¯ãªãã¯ã§ä»ç®ãè²¼ããã³ã¡ã³ããæ¸ãã°åæ ããã¾ãã æ¬å½ã¯ã¯ãã¼ãºããªå ´æã§ãã¬ã¼ã³ããªããããã³ããå ¥ããã¨ã¿ããªã«ãè¦ãã¦ããããªã¨ã ããã«ãã¦ãNodeNinjaã«é
No open source project has received more criticism in recent years than MongoDB. Most of the flak has revolved around technical implementation decisions made for the project, and perceptions of how the company behind MongoDB, 10gen, has used advantages gained from those design decisions in marketing their product. It seems that more blog posts have been written on why one should not use MongoDB th
SEO対çï¼ç¬ï¼ã¨ãã¦ã®ã¼ã¯çéã§æµè¡ã®è¨èãï¼ã¤ä¸¦ã¹ã¦ã¿ãã ãã§ãããã...ãããé£ããã©ããã¯è¨äºã§å¤æãã¦ãã ããã å æ¥ã æ±äº¬nodeå¦åç¥2011 ãã¨ããã¤ãã³ããè´è¬ãã¦ãfluent + mongodb + node.js ã®çµã¿åããã¯ãBtoCç³»ã®è²ã ...
ãã¼ã¿ã¹ãã¢ã®æ°ããªã«ã¿ãã¨ãã¦NoSQLããã¼ã ã«ãªã£ã¦ãã¾ããããã®ä¸ã§ç°å½©ãæ¾ã£ã¦ããã®ãããã¥ã¡ã³ãæåãã¼ã¿ãã¼ã¹ã§ãããMongoDBãã§ãããµã¤ãã¼ã¨ã¼ã¸ã§ã³ãã§ã¯ããã®MongoDBãæ¯è¼çæ©ã段éããå®ãµã¼ãã¹ã§æ´»ç¨ãã¦ãã¾ããããã§ä»åã¯MongoDBã®ä½¿ãã©ãããå©ç¨æã®æ³¨æç¹ã«ã¤ãã¦ããµã¤ãã¼ã¨ã¼ã¸ã§ã³ãã®3人ã®æè¡è ã«ã話ã伺ãã¾ããã åæ£å¦çã®ããã¿ãæåããåããMongoDB ãªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹ï¼ä»¥ä¸RDBï¼ã»ã©ç ©éã§ã¯ãªããåæ£KVSï¼Key-Value Storeï¼ã»ã©ã·ã³ãã«éããªã第ä¸ã®ãã¼ã¿ã¹ãã¢ã®1ã¤ã¨ãã¦ãããã¥ã¡ã³ãæååãã¼ã¿ãã¼ã¹ã§ãããMongoDBããæãããã¾ããGNU AGPLv3ãæ¡ç¨ãããªã¼ãã³ã½ã¼ã¹ã½ããã¦ã§ã¢ã§ãããããã©ã¼ãã³ã¹ãé«ãã¹ã±ã¼ã©ããªãã£ã«ãåªãã¦ããã¨ããç¹å¾´ãããã¾ããã¾ããJSONï¼JavaS
人çã§3å2chã¯ãã¼ã³æ²ç¤ºæ¿ã·ã¹ãã ãããã°ã©ã ããéç¨ãããã¨ãããã ã¾ãã¯ããã¯ãC++ãboostã使ã£ã¦ãã³ãã¬ã¼ãæºè¼ãªæ§æã ã£ããVC6ã§ã³ã³ãã¤ã«ã§ããªããã¿ã¼ã³ããã£ã¦æ³£ããã£ããã³ã³ãã¤ã«ã®ãé ããã«ã»ããç¬ãã§ãããã®é ã¯è¥ãã£ãã ãã®ã³ã¼ãã使ã£ã¦æ±äº¬å·¥æ¥å¤§å¦æ²ç¤ºæ¿ã¨ããWebæ²ç¤ºæ¿ã·ã¹ãã ãéç¨ãã¦ãããC++ã§ã¯æ©åçãªæ°æ©è½éçºãé£ãããã¨ããããã«æãç¥ã£ããå½æ使ã£ããã¨ããªãã£ãPHPã§è©¦ãã«ãªã©ã¤ããã¦ã¿ããæ°æéã§éçºã§ãã¡ãã£ãããããªãã¬ã¤ã¹ãã¡ããããã ãã³ãã³å¤§ç¾ç§ã¨ããWikiã·ã¹ãã ãæ¸ããã¨ãã«ããä»éãã2chå¼ã®æ²ç¤ºæ¿ã·ã¹ãã ãæ¸ãããRubyã ã£ããRubyã§å®ç¨çãªWebã¢ããªã±ã¼ã·ã§ã³ãæ¸ãããã¨ããªãã£ããããããé£ãªãå®è£ ãããã¨ãã§ãããUTF-8ãæ¡ç¨ããã®ã§ãããªããã®äºææ§ãåãã®ãé¢åã ã£ãã Python
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}}