nginxUsing open_file_cache to optimize file access

server {
  open_file_cache max=100000 inactive=30m;
  open_file_cache_valid 5m;
  open_file_cache_min_uses 2;
  open_file_cache_errors on;
}ctrl + cyoutubegithub

`server {` virtual server configuration block	`max=100000` cache up to 100000 file descriptors
`inactive=30m` if file is accessed 2 times within 30 minutes, we will cache it's descriptor	`open_file_cache_valid` period of time to check if cached file is updated
`open_file_cache_min_uses` min number of times file is accessed within 30 minutes (`inactive` param) to cache it's descriptor	`open_file_cache_errors` also cache errors like absent file or access denied

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