The optimize API allows to optimize one or more indexes for faster search by merging the number of Lucene segments (which grow over time). Read more on the official documentation.
There isn't really a whole lot to using this DSL. Simply specify a single index or a sequence of indexes.
client.execute {
optimize index "index1"
}or
client.execute {
optimize("index1", "index2", ....)
}There are only a few options. The most useful is maxSegments which allows you to fully optimize by choosing to optimize to a single (or whatever you want) segments, eg
client.execute {
optimize index "index1" maxSegments 6
}The rest of the options are described here.