mongodb list 大量插入数据 Bulk()

在mongodb2.6以后 使用  Bulk()

db.collection.initializeOrderedBulkOp() or thedb.collection.initializeUnorderedBulkOp() method.

得到bulk

var bulk = db.users.initializeOrderedBulkOp();
bulk.insert( { user: "abc123", status: "A", points: 0 } );
bulk.insert( { user: "ijk123", status: "A", points: 0 } );
bulk.insert( { user: "mop123", status: "P", points: 0 } );
bulk.find( { status: "D" } ).remove();
bulk.find( { status: "P" } ).update( { $set: { comment: "Pending" } } );
bulk.execute();

如果有一个失败，剩余的会终止，执行是顺序执行的

详细:https://docs.mongodb.org/manual/reference/method/db.collection.initializeOrderedBulkOp/#db.collection.initializeOrderedBulkOp

db.collection.initializeUnorderedBulkOp():

https://docs.mongodb.org/manual/reference/method/db.collection.initializeUnorderedBulkOp/#db.collection.initializeUnorderedBulkOp

var bulk = db.users.initializeUnorderedBulkOp();
bulk.insert( { user: "abc123", status: "A", points: 0 } );
bulk.insert( { user: "ijk123", status: "A", points: 0 } );
bulk.insert( { user: "mop123", status: "P", points: 0 } );
bulk.execute();

Each group of operations can have at most 1000 operations. If a group exceeds this limit, MongoDB will divide the group into smaller groups of 1000 or less. For example, if the bulk operations list consists of 2000 insert operations, MongoDB creates 2 groups, each with 1000 operations.

如果操作过多，会切分成1000个操作