Apache Solr Reference Guide Covering Apache Solr 6.0

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"start":"2006-01-01T00:00:00Z",
"end":"2015-01-01T00:00:00Z"}}},
Additional Pivot Parameters
Although facet.pivot.mincount deviates in name from the facet.mincount parameter used by field
faceting, many other Field faceting parameters described above can also be used with pivot faceting:
facet.limit
facet.offset
facet.sort
facet.overrequest.count
facet.overrequest.ratio
Interval Faceting
Another supported form of faceting is interval faceting. This sounds similar to range faceting, but the
functionality is really closer to doing facet queries with range queries. Interval faceting allows you to set
variable intervals and count the number of documents that have values within those intervals in the specified
field.
Even though the same functionality can be achieved by using a facet query with range queries, the
implementation of these two methods is very different and will provide different performance depending on
the context. If you are concerned about the performance of your searches you should test with both options.
Interval faceting tends to be better with multiple intervals for the same fields, while facet query tend to be
better in environments where filter cache is more effective (static indexes for example). This method will use
docValues if they are enabled for the field, will use fieldCache otherwise.
Name
facet.interval
facet.interval.set
What it does
Specifies the field to facet by interval.
Sets the intervals for the field.
The facet.interval parameter
This parameter Indicates the field where interval faceting must be applied. It can be used multiple times in the
same request to indicate multiple fields.
facet.interval=price&facet.interval=size
The facet.interval.set parameter
This parameter is used to set the intervals for the field, it can be specified multiple times to indicate multiple
intervals. This parameter is global, which means that it will be used for all fields indicated with facet.inter
val unless there is an override for a specific field. To override this parameter on a specific field you can use:
f..facet.interval.set, for example:
f.price.facet.interval.set=[0,10]&f.price.facet.interval.set=(10,100]
Interval Syntax
Apache Solr Reference Guide 6.0
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