reindex
POST _reindex
{
  "source": {
    "remote": {
      "host": "http://127.0.0.1:8080"
    },
    "index": "xxx"
  },
  "dest": {
    "index": "xxx-2"
  }
}
alias
POST /_aliases
{
    "actions" : [
        { "add" : { "index" : "test1", "alias" : "alias1" } }
    ]
}
index
PUT twitter/tweet/1/_create
{
    "user" : "kimchy",
    "post_date" : "2009-11-15T14:12:12",
    "message" : "trying out Elasticsearch"
}
update
POST test/_update/1
{
  "doc": {
    "user" : "kimchy",
    "post_date" : "2009-11-15T14:12:12",
    "message" : "trying out Elasticsearch"
  }
}