ngx_http_file_cache_key   57 http/ngx_http_file_cache.c static u_char  ngx_http_file_cache_key[] = { LF, 'K', 'E', 'Y', ':', ' ' };
ngx_http_file_cache_key  230 http/ngx_http_file_cache.c                       + sizeof(ngx_http_file_cache_key) + len + 1;
ngx_http_file_cache_key  766 http/ngx_http_file_cache.c     p = ngx_cpymem(p, ngx_http_file_cache_key, sizeof(ngx_http_file_cache_key));