はじめてのMongoDB
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MongoDBの初心者向け資料です。SQLとの比較からMongoDBを理解する章を中心に展開していきます。また、Replication・Shardingに関しては別章で詳しく紹介します。 この資料をきっかけに多くの方がMongoDBを知り、触れるきっかけになればと思います。
![{
"_id" : ObjectId("4dcd3ebc9278000000005158"),
"timestamp" : ISODate("2011-05-13T14:22:46.777Z"),
"binary" : BinData(0,""),
"string" : "abc",
"number" : 3,
"subobj" : {"subA": 1, "subB": 2 },
"array" : [1, 2, 3],
"dbref" : [_id1, _id2, _id3]
}](https://image.slidesharecdn.com/introductiontomongo-110910184803-phpapp01/85/MongoDB-16-320.jpg)
![{
"_id" : ObjectId("4dcd3ebc9278000000005158"),
"timestamp" : ISODate("2011-05-13T14:22:46.777Z"),
"binary" : BinData(0,""),
"string" : "abc",
"number" : 3,
"subobj" : {"subA": 1, "subB": 2 },
"array" : [1, 2, 3],
"dbref" : [_id1, _id2, _id3]
}](https://image.slidesharecdn.com/introductiontomongo-110910184803-phpapp01/85/MongoDB-17-320.jpg)
![{
"_id" : ObjectId("4dcd3ebc9278000000005158"),
"timestamp" : ISODate("2011-05-13T14:22:46.777Z"),
"binary" : BinData(0,""),
"string" : "abc",
"number" : 3,
"subobj" : {"subA": 1, "subB": 2 },
"array" : [1, 2, 3],
padding
}](https://image.slidesharecdn.com/introductiontomongo-110910184803-phpapp01/85/MongoDB-20-320.jpg)
![{
"_id" : ObjectId("4dcd3ebc9278000000005158"),
"timestamp" : ISODate("2011-05-13T14:22:46.777Z"),
"binary" : BinData(0,""),
"string" : "def",
"number" : 4,
"subobj" : {"subA": 1, "subB": 2 },
"array" : [1, 2, 3, 4, 5, 6],
"newkey" : "In-place"
}](https://image.slidesharecdn.com/introductiontomongo-110910184803-phpapp01/85/MongoDB-21-320.jpg)
![{
"_id" : ObjectId("4dcd3ebc9278000000005158"),
"timestamp" : ISODate("2011-05-13T14:22:46.777Z"),
"binary" : BinData(0,""),
"string" : "abc",
"number" : 3,
"subobj" : {"subA": 1, "subB": 2 },
"array" : [1, 2, 3],
}](https://image.slidesharecdn.com/introductiontomongo-110910184803-phpapp01/85/MongoDB-25-320.jpg)
![$ mongod --master --dbpath /data/masterdb/ --rest
$ mongod --slave --source <masterhostname>[:<port>]
--dbpath /data/slavedb/ --rest](https://image.slidesharecdn.com/introductiontomongo-110910184803-phpapp01/85/MongoDB-36-320.jpg)
![$ mongod --replSet setname --rest
> config = {_id: 'mySet', members: [
{_id: 0, host: 'host1:27017', priority: 1.0},
{_id: 1, host: 'host2:27018’, priority: 0.5},
{_id: 2, host: 'host3:27019', priority: 0.0} ] }
> rs.initiate(config)
> rs.status() //](https://image.slidesharecdn.com/introductiontomongo-110910184803-phpapp01/85/MongoDB-38-320.jpg)
![//
> box = [[40.73083, -73.99756], [40.741404, -73.988135]]
> db.places.find({"loc" : {"$within" : {"$box" : box}}})
//
> center = [50, 50]
> radius = 10
> db.places.find({"loc" : {"$within" : {"$center" : [center, radius]}}})
// v1.9
> polygonA = [ [ 10, 20 ], [ 10, 40 ], [ 30, 40 ], [ 30, 20 ] ]
> polygonB = { a : { x : 10, y : 20 }, b : { x : 15, y : 25 }, c : { x :
20, y : 20 } }
> db.places.find({ "loc" : { "$within" : { "$polygon" : polygonA } } })
> db.places.find({ "loc" : { "$within" : { "$polygon" : polygonB } } })](https://image.slidesharecdn.com/introductiontomongo-110910184803-phpapp01/85/MongoDB-63-320.jpg)
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はじめてのMongoDB
- 16. { "_id" : ObjectId("4dcd3ebc9278000000005158"), "timestamp" : ISODate("2011-05-13T14:22:46.777Z"), "binary" : BinData(0,""), "string" : "abc", "number" : 3, "subobj" : {"subA": 1, "subB": 2 }, "array" : [1, 2, 3], "dbref" : [_id1, _id2, _id3] }
- 17. { "_id" : ObjectId("4dcd3ebc9278000000005158"), "timestamp" : ISODate("2011-05-13T14:22:46.777Z"), "binary" : BinData(0,""), "string" : "abc", "number" : 3, "subobj" : {"subA": 1, "subB": 2 }, "array" : [1, 2, 3], "dbref" : [_id1, _id2, _id3] }
- 20. { "_id" : ObjectId("4dcd3ebc9278000000005158"), "timestamp" : ISODate("2011-05-13T14:22:46.777Z"), "binary" : BinData(0,""), "string" : "abc", "number" : 3, "subobj" : {"subA": 1, "subB": 2 }, "array" : [1, 2, 3], padding }
- 21. { "_id" : ObjectId("4dcd3ebc9278000000005158"), "timestamp" : ISODate("2011-05-13T14:22:46.777Z"), "binary" : BinData(0,""), "string" : "def", "number" : 4, "subobj" : {"subA": 1, "subB": 2 }, "array" : [1, 2, 3, 4, 5, 6], "newkey" : "In-place" }
- 25. { "_id" : ObjectId("4dcd3ebc9278000000005158"), "timestamp" : ISODate("2011-05-13T14:22:46.777Z"), "binary" : BinData(0,""), "string" : "abc", "number" : 3, "subobj" : {"subA": 1, "subB": 2 }, "array" : [1, 2, 3], }
- 36. $ mongod --master --dbpath /data/masterdb/ --rest $ mongod --slave --source <masterhostname>[:<port>] --dbpath /data/slavedb/ --rest
- 38. $ mongod --replSet setname --rest > config = {_id: 'mySet', members: [ {_id: 0, host: 'host1:27017', priority: 1.0}, {_id: 1, host: 'host2:27018’, priority: 0.5}, {_id: 2, host: 'host3:27019', priority: 0.0} ] } > rs.initiate(config) > rs.status() //
- 47. Cluster Shard Servers (Data) config Servers (Shard Configration) shard1 shard2 shard3 [ a, f ) [ k, n) [ o, t ) Chunk [ f, k ) [ n, o ) [ t, } ) mongos Servers (Routers)
- 48. Shard 1 ( mongos primary primary ) Shard cinfig Shard mongos
- 53. ~ mkdir -p shard/shard00 ~ mkdir -p shard/shard01 ~ mkdir -p shard/shard02 ~ mkdir -p shard/config ~ mongod --shardsvr --port 27017 --dbpath shard/shard00 ~ mongod --shardsvr --port 27018 --dbpath shard/shard01 ~ mongod --shardsvr --port 27019 --dbpath shard/shard02 ~ mongod --configsvr --port 27020 --dbpath shard/config ~ mongos --configdb localhost:27020 --port 27021
- 54. ➜ ~ mongo localhost:27021 // mongos MongoDB shell version: 1.8.0 connecting to: localhost:27021/test > show dbs config 0.1875GB // sharding > db.adminCommand( { addshard: "localhost:27017", name: "shard00" } ) { "shardAdded" : "shard00", "ok" : 1 } > db.adminCommand( { addshard: "localhost:27018", name: "shard01" } ) { "shardAdded" : "shard01", "ok" : 1 } > db.adminCommand( { addshard: "localhost:27019", name: "shard02" } ) { "shardAdded" : "shard02", "ok" : 1 }
- 55. > db.adminCommand( { addshard: "set00/delta1:27017,delta2:27017", name: "shard00" } ) { "shardAdded" : "shard00", "ok" : 1 } > db.adminCommand( { addshard: "set01/delta3:27018,delta4:27018", name: "shard01" } ) { "shardAdded" : "shard01", "ok" : 1 } > db.adminCommand( { addshard: "set02/delta5:27019,delta6:27019", name: "shard02" } ) { "shardAdded" : "shard02", "ok" : 1 }
- 56. // mongos > db.adminCommand( { enablesharding : "test" } ) { "ok" : 1 } > db.adminCommand( { shardcollection : "test.myshard", key : { n : 1 } } ) { "collectionsharded" : "test.myshard", "ok" : 1 }
- 63. // > box = [[40.73083, -73.99756], [40.741404, -73.988135]] > db.places.find({"loc" : {"$within" : {"$box" : box}}}) // > center = [50, 50] > radius = 10 > db.places.find({"loc" : {"$within" : {"$center" : [center, radius]}}}) // v1.9 > polygonA = [ [ 10, 20 ], [ 10, 40 ], [ 30, 40 ], [ 30, 20 ] ] > polygonB = { a : { x : 10, y : 20 }, b : { x : 15, y : 25 }, c : { x : 20, y : 20 } } > db.places.find({ "loc" : { "$within" : { "$polygon" : polygonA } } }) > db.places.find({ "loc" : { "$within" : { "$polygon" : polygonB } } })
- 65. ➜ ~ mongofiles list connected to: 127.0.0.1 ➜ ~ mongofiles put music1.mp3 connected to: 127.0.0.1 added file: { _id: ObjectId('4df17f8d9d47ba5c0247e72e'), filename: "music1.mp3", chunkSize: 262144, uploadDate: new Date(1307672462538), md5: "9ee9472200a2e18bf376ce622c3b0055", length: 11183104 } done! ➜ ~ mongofiles list -v // -v Fri Jun 10 11:21:05 creating new connection to:127.0.0.1 Fri Jun 10 11:21:05 BackgroundJob starting: connected to: 127.0.0.1 music.mp3 11183104
- 66. ➜ ~ mongofiles put music2.mp3 connected to: 127.0.0.1 added file: { _id: ObjectId('4df181fc5e354129e833193f'), filename: "music2.mp3", chunkSize: 262144, uploadDate: new Date(1307673086293), md5: "9d4f424fa1843711e196e502d8a00183", length: 12225353 } done! ➜ ~ mongofiles list connected to: 127.0.0.1 music1.mp3 11183104 music2.mp3 12225353 ➜ ~ mongofiles search .mp3 connected to: 127.0.0.1 music1.mp3 11183104 music2.mp3 12225353