anchor.diff:  ------------------------
   
   [float]
  -==== Enabling caching by default
  +==== Enabling and disabling caching
   
  -The cache is not enabled by default, but can be enabled when creating a new
  +The cache is enabled by default, but can be disabled when creating a new
   index as follows:
   
   [source,js]
  
positive.code: curl -XPUT localhost:9200/my_index -d'
  {
    "settings": {
      "index.requests.cache.enable": true
    }
  }
  '
  
negative.code: -----------------------------
  
  [float]
  ==== Enabling and disabling caching per request
  
  The `request_cache` query-string parameter can be used to enable or disable
  caching on a *per-request* basis.  If set, it overrides the index-level setting:
  