[
{
_id:001
...
arrs:[{name:"a",score:10},
{name:"b",score:11},
{name:"c",score:12},
{name:"d",score:13}
]
}
{
_id:002
...
arrs:[{name:"a",score:11},
{name:"b",score:12},
{name:"c",score:13},
{name:"d",score:14}
]
}
...
] like the documents with embedded arrays above, each arrs is less than 20 in length, but you need to update the name,score. of arrs internal subdocuments more frequently. Whether it is necessary to split the arrs internal sub-document into a separate piece of collection.
this is the suggestion found elsewhere: the smallest unit of
operation had better be Document, rather than SubDocument,. If you often have the need for SubDocument operation, please take it out and put it into another Collection, Refrence these split Document in the original Collection data structure.
I haven"t found this suggestion on the official website yet. Should I split it out?