{
   "enabled" : true,
   "inactive_time" : "60m",
   "levels" : "1:2",
   "logging" : false,
   "proxy_cache_background_update" : "on",
   "proxy_cache_lock" : "off",
   "proxy_cache_min_uses" : 1,
   "proxy_cache_revalidate" : "on",
   "proxy_cache_use_stale" : "error timeout http_429 http_500 http_502 http_503 http_504",
   "proxy_cache_valid" : {
      "200 301 302" : "60m",
      "404" : "1m"
   },
   "x_cache_header" : false,
   "zone_size" : "10m"
}