I am new with elastic search and looking for the best solution with which i can create a feed module which have time based feeds along with there group and comment.
I learned little and come up with following.
PUT /group
{
"mappings": {
"groupDetail": {},
"content": {
"_parent": {
"type": "groupDetail"
}
},
"comment": {
"_parent": {
"type": "content"
}
}
}
}so that will be placed separately as per index.
but than after i found one post where i found that parent child is costly operation for search than nested objects.
something like following is two group(feed) having details with content and comments as nested element.
{
"_index": "group",
"_type": "groupDetail",
"_id": 6829,
"_score": 1,
"_source": {
"groupid": 6829,
"name": "Jignesh Public",
"insdate": "2016-10-01T04:09:33.916Z",
"upddate": "2017-04-19T05:19:40.281Z",
"isVerified": true,
"tags": [
"spotrs",
"surat"
],
"content": [
{
"contentid": 1,
"type": "1",
"byUser": 5858,
"insdate": "2016-10-01 11:20",
"info": [
{
"t": 1,
"v": "lorem ipsum long text 1"
},
{
"t": 2,
"v": "http://www.imageurl.com/1"
}
],
"comments": [
{
"byuser": 5859,
"comment": "Comment 1",
"upddate": "2016-10-01T04:09:33.916Z"
},
{
"byuser": 5860,
"comment": "Comment 2",
"upddate": "2016-10-01T04:09:33.916Z"
}
]
},
{
"contentid": 2,
"type": "2",
"byUser": 5859,
"insdate": "2016-10-01 11:20",
"info": [
{
"t": 4,
"v": "http://www.videoURL.com/1"
}
],
"comments": [
{
"byuser": 5859,
"comment": "Comment 1",
"upddate": "2016-10-01T04:09:33.916Z"
},
{
"byuser": 5860,
"comment": "Comment 2",
"upddate": "2016-10-01T04:09:33.916Z"
}
]
}
]
}
}
{
"_index": "group",
"_type": "groupDetail",
"_id": 6849,
"_score": 1,
"_source": {
"groupid": 6849,
"name": "Xyz Group Public",
"insdate": "2016-10-01T04:09:33.916Z",
"upddate": "2017-04-19T05:19:40.281Z",
"isVerified": false,
"tags": [
"spotrs",
"food"
],
"content": [
{
"contentid": 3,
"type": "1",
"byUser": 5858,
"insdate": "2016-10-01 11:20",
"info": [
{
"t": 1,
"v": "lorem ipsum long text 3"
},
{
"t": 2,
"v": "http://www.imageurl.com/1"
}
],
"comments": [
{
"byuser": 5859,
"comment": "Comment 1",
"upddate": "2016-10-01T04:09:33.916Z"
},
{
"byuser": 5860,
"comment": "Comment 2",
"upddate": "2016-10-01T04:09:33.916Z"
}
]
},
{
"contentid": 4,
"type": "2",
"byUser": 5859,
"insdate": "2016-10-01 11:20",
"info": [
{
"t": 4,
"v": "http://www.videoURL.com/1"
}
],
"comments": [
{
"byuser": 5859,
"comment": "Comment 1",
"upddate": "2016-10-01T04:09:33.916Z"
},
{
"byuser": 5860,
"comment": "Comment 2",
"upddate": "2016-10-01T04:09:33.916Z"
}
]
}
]
}
}now if i try to think with nested object than i confused if user add comment very frequently than reindexing factor will effect?
So main think i want to ask is which is the best approach with which i can add comment frequently and my content searching result is also faster.