We used nginx proxy to cache lots of static files. Our monitoring tool showed that the write I/O on the server spike once a day on 4am GMT time and server will slow down significantly because of the high IO. I couldn't find any cron that can cause this. I am guessing it might be the nginx cache manager was clearing the disk cache once a day.<div>
<br></div><div>We have cache setting like: proxy_cache_path /cache levels=2:2:2 keys_zone=cache:2000m inactive=1d max_size=400000m;</div><div><br></div><div>Any idea? Thanks!</div>