# Usecase suggestion needed **URL:** \ **Category:** Elasticsearch\ **Created:** [January 3, 2012, 9:22pm UTC](https://discuss.elastic.co/t/usecase-suggestion-needed/6276 "2012-01-03T21:22:10Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Eugene\_Strokin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/eugene_strokin/32/1238_2.png) [@Eugene\_Strokin](https://discuss.elastic.co/u/Eugene_Strokin)\ **Post date:** [January 3, 2012, 9:22pm UTC](https://discuss.elastic.co/t/usecase-suggestion-needed/6276/1 "2012-01-03T21:22:10Z")
I don't have a lot of experience with ES, so forgive if the answer is obvious. But I still need help with some usecase: I have document structure which is similar to something like blog post. For sake of example I'll remove some non related fields, and I'd have something like this: POST: ID:String Description:Text OwnerScreenName: String OwnerID:String I have millions of such posts indexed, and it works Ok. Now I need to add Comments for each post. Each Comment would have very similar fields: COMMENT: ID:String PostID:String Comment:Text CommenterScreenName:String I could have comments be added/edited/deleted relatively often and in large numbers (could be from 0 to 300 comments per post in usual case, and even a lot more in some special cases). Also I need to find posts based on the comment's content. So my question: Should I just add the comments data right to the post (making it part of the document)? But in this case, when I need just the posts without comments, I'll still be getting everything together, and because it could have a lot of comments, it could be big overhead. Or should I keep Comments as a separate type in ES. But in this case, to retrieve posts and comments together, I'd need to make 2 calls to ES. Also, post's content should boost score higher than comment's content, and if the comments are separate documents, I'm not sure how to write such queries, if possible at all. Could you give me some suggestions, or at least direction where to dig in? Thanks in advance, Eugene S. ---
**Author:** ![Karussell1](https://avatars.discourse-cdn.com/v4/letter/k/50afbb/32.png) [@Karussell1](https://discuss.elastic.co/u/Karussell1)\ **Post date:** [January 4, 2012, 2:13pm UTC](https://discuss.elastic.co/t/usecase-suggestion-needed/6276/2 "2012-01-04T14:13:10Z")
Have a look into parent/child which should be perfectly for your usecase. > post's content should boost score higher than comment's content This is easier when separate IMO e.g. using disMaxQuery. Peter. On 3 Jan., 22:22, Eugene Strokin [eug...@strokin.info](mailto:eug...@strokin.info) wrote: > I don't have a lot of experience with ES, so forgive if the answer is > obvious. But I still need help with some usecase: > I have document structure which is similar to something like blog > post. > For sake of example I'll remove some non related fields, and I'd have > something like this: > POST: > ID:String > Description:Text > OwnerScreenName: String > OwnerID:String > > I have millions of such posts indexed, and it works Ok. > Now I need to add Comments for each post. Each Comment would have very > similar fields: > COMMENT: > ID:String > PostID:String > Comment:Text > CommenterScreenName:String > > I could have comments be added/edited/deleted relatively often and in > large numbers (could be from 0 to 300 comments per post in usual case, > and even a lot more in some special cases). Also I need to find posts > based on the comment's content. > > So my question: Should I just add the comments data right to the post > (making it part of the document)? But in this case, when I need just > the posts without comments, I'll still be getting everything together, > and because it could have a lot of comments, it could be big overhead. > Or should I keep Comments as a separate type in ES. But in this case, > to retrieve posts and comments together, I'd need to make 2 calls to > ES. Also, post's content should boost score higher than comment's > content, and if the comments are separate documents, I'm not sure how > to write such queries, if possible at all. > > Could you give me some suggestions, or at least direction where to dig > in? > > Thanks in advance, > Eugene S. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 3:43am UTC](https://discuss.elastic.co/t/usecase-suggestion-needed/6276/3 "2017-07-06T03:43:51Z")