How to index a non unique key in mongodb?
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I am creating a project related to the blogs.
Let say I have a blog post and in that, I want to maintain comments and likes against a post.
How can I achieve it? I have created a collection of blog post and in the same, I have an array of comments. But if I think of long term, this might not be the best approach.
Can someone please suggest me the best way to maintain such activity?
And is it possible to index a non unique key in a schema?
Like if I want to create another collection for comments and likes, how to retrieve the comments against a blog? I can but without index it would be slow when data is too much.
arrays node.js database mongodb
asked Nov 16 '18 at 16:37
user9009353user9009353
813
add a comment |
I am creating a project related to the blogs.
Let say I have a blog post and in that, I want to maintain comments and likes against a post.
How can I achieve it? I have created a collection of blog post and in the same, I have an array of comments. But if I think of long term, this might not be the best approach.
Can someone please suggest me the best way to maintain such activity?
And is it possible to index a non unique key in a schema?
Like if I want to create another collection for comments and likes, how to retrieve the comments against a blog? I can but without index it would be slow when data is too much.
arrays node.js database mongodb
asked Nov 16 '18 at 16:37
user9009353user9009353
813
1
See stackoverflow.com/questions/5373198/…. And yes, indexes don't have to be unique.
– JohnnyHK
Nov 16 '18 at 16:43
Can you please give me an example of making index on a non unique key? db.items.createIndex( { “item" : 1 } ) ? shall it work if item has similar values in a collection?
– user9009353
Nov 16 '18 at 17:05
add a comment |
I am creating a project related to the blogs.
Let say I have a blog post and in that, I want to maintain comments and likes against a post.
How can I achieve it? I have created a collection of blog post and in the same, I have an array of comments. But if I think of long term, this might not be the best approach.
Can someone please suggest me the best way to maintain such activity?
And is it possible to index a non unique key in a schema?
Like if I want to create another collection for comments and likes, how to retrieve the comments against a blog? I can but without index it would be slow when data is too much.
arrays node.js database mongodb
asked Nov 16 '18 at 16:37
user9009353user9009353
813
I am creating a project related to the blogs.
Let say I have a blog post and in that, I want to maintain comments and likes against a post.
How can I achieve it? I have created a collection of blog post and in the same, I have an array of comments. But if I think of long term, this might not be the best approach.
Can someone please suggest me the best way to maintain such activity?
And is it possible to index a non unique key in a schema?
Like if I want to create another collection for comments and likes, how to retrieve the comments against a blog? I can but without index it would be slow when data is too much.
arrays node.js database mongodb
arrays node.js database mongodb
asked Nov 16 '18 at 16:37
user9009353user9009353
813
asked Nov 16 '18 at 16:37
user9009353user9009353
813
asked Nov 16 '18 at 16:37
user9009353user9009353
813
asked Nov 16 '18 at 16:37
user9009353user9009353
813
asked Nov 16 '18 at 16:37
user9009353user9009353
813
813
1
See stackoverflow.com/questions/5373198/…. And yes, indexes don't have to be unique.
– JohnnyHK
Nov 16 '18 at 16:43
Can you please give me an example of making index on a non unique key? db.items.createIndex( { “item" : 1 } ) ? shall it work if item has similar values in a collection?
– user9009353
Nov 16 '18 at 17:05
add a comment |
1
See stackoverflow.com/questions/5373198/…. And yes, indexes don't have to be unique.
– JohnnyHK
Nov 16 '18 at 16:43
Can you please give me an example of making index on a non unique key? db.items.createIndex( { “item" : 1 } ) ? shall it work if item has similar values in a collection?
– user9009353
Nov 16 '18 at 17:05
1
1
See stackoverflow.com/questions/5373198/…. And yes, indexes don't have to be unique.
– JohnnyHK
Nov 16 '18 at 16:43
See stackoverflow.com/questions/5373198/…. And yes, indexes don't have to be unique.
– JohnnyHK
Nov 16 '18 at 16:43
Can you please give me an example of making index on a non unique key? db.items.createIndex( { “item" : 1 } ) ? shall it work if item has similar values in a collection?
– user9009353
Nov 16 '18 at 17:05
Can you please give me an example of making index on a non unique key? db.items.createIndex( { “item" : 1 } ) ? shall it work if item has similar values in a collection?
– user9009353
Nov 16 '18 at 17:05
add a comment |
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1
See stackoverflow.com/questions/5373198/…. And yes, indexes don't have to be unique.
– JohnnyHK
Nov 16 '18 at 16:43
Can you please give me an example of making index on a non unique key? db.items.createIndex( { “item" : 1 } ) ? shall it work if item has similar values in a collection?
– user9009353
Nov 16 '18 at 17:05