Syntax: aio on | off | threads[=pool];

Syntax: read_ahead size; Default: read_ahead 0;

Syntax: open_file_cache off;open_file_cache max=N

Syntax: variables_hash_max_size size; Default: variables_hash_max_size

Syntax: open_file_cache_errors on | off; Default: open_file_cache_errors

Syntax: connection_pool_size size; Default: connection_pool_size

Syntax: listen address[:port] [default_server] [ssl]

Syntax: ignore_invalid_headers on | off; Default: ignore_invalid_headers

Syntax: open_file_cache_min_uses number; Default: open_file_cache_min_uses

Syntax: types_hash_max_size size; Default: types_hash_max_size 1024;