Mongodb Collection
1) 컬렉션 생성
> use dbName;
> db.createCollection(“test1”);
{ “ok” : 1 }
> show collections;
system.indexes
test1
> # Capped Collection ( 제한사이즈로 설정하며 성능적으로 유리함. 단, 제한사항을 가지므로http://www.mongodb.org/display/DOCS/Capped+Collections#CappedCollections-UsageandRestrictions 에서 확인 필요 )
> db.createCollection(“test1”, {capped:true, size:100000, max: 1000});
{ “ok” : 1 }
> show collections;
system.indexes
test1
2) 컬렉션명 수정
> db.collectionName.renameCollection(“newCollectionName”);
{ “ok” : 1 }
> show collections;
system.indexes
test2
3) 컬렉션 삭제
> db.test2.drop();
true
> show collections;
system.indexes
4) 컬렉션 상태 보기
> db.test3.validate();
{
“ns” : “test.test3”,
“capped” : 1,
“max” : 2147483647,
“firstExtent” : “0:25000 ns:test.test3”,
“lastExtent” : “0:25000 ns:test.test3”,
“extentCount” : 1,
“datasize” : 0,
“nrecords” : 0,
“lastExtentSize” : 102400,
“padding” : 1,
“firstExtentDetails” : {
“loc” : “0:25000”,
“xnext” : “null”,
“xprev” : “null”,
“nsdiag” : “test.test3”,
“size” : 102400,
“firstRecord” : “null”,
“lastRecord” : “null”
},
“deletedCount” : 2,
“deletedSize” : 102224,
“nIndexes” : 0,
“keysPerIndex” : {
},
“valid” : true,
“errors” : [ ],
“warning” : “Some checks omitted for speed. use {full:true} option to do more thorough scan.”,
“ok” : 1
}
