Apache Solr Reference Guide Covering Apache Solr 6.0

$ curl -X POST -H 'Content-Type: application/json'
'http://localhost:8983/solr/techproducts/update?versions=true' --data-binary '
[ { "id" : "aaa" },
{ "id" : "bbb" } ]'
{"responseHeader":{"status":0,"QTime":6},
"adds":["aaa",1498562471222312960,
"bbb",1498562471225458688]}
$ curl -X POST -H 'Content-Type: application/json'
'http://localhost:8983/solr/techproducts/update?_version_=999999&versions=true'
--data-binary '
[{ "id" : "aaa",
"foo_s" : "update attempt with wrong existing version" }]'
{"responseHeader":{"status":409,"QTime":3},
"error":{"msg":"version conflict for aaa expected=999999
actual=1498562471222312960",
"code":409}}
$ curl -X POST -H 'Content-Type: application/json'
'http://localhost:8983/solr/techproducts/update?_version_=1498562471222312960&versio
ns=true&commit=true' --data-binary '
[{ "id" : "aaa",
"foo_s" : "update attempt with correct existing version" }]'
{"responseHeader":{"status":0,"QTime":5},
"adds":["aaa",1498562624496861184]}
$ curl 'http://localhost:8983/solr/techproducts/query?q=*:*&fl=id,_version_'
{
"responseHeader":{
"status":0,
"QTime":5,
"params":{
"fl":"id,_version_",
"q":"*:*"}},
"response":{"numFound":2,"start":0,"docs":[
{
"id":"bbb",
"_version_":1498562471225458688},
{
"id":"aaa",
"_version_":1498562624496861184}]
}}
For more information, please also see Yonik Seeley's presentation on NoSQL features in Solr 4 from Apache
Lucene EuroCon 2012.
Power Tip
The _version_ field is by default stored in the inverted index ( indexed="true" ). However, for some
systems with a very large number of documents, the increase in FieldCache memory requirements may
be too costly. A solution can be to declare the _version_ field as DocValues:
Sample field definition
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