I didn't see anything in documentation, but it seems as if there's some kind of throttle in place that I can't find configuration for.
When running an operation with Better Search Replace (https://wordpress.org/plugins/better-search-replace/) the task fails. Checking error logs, I get these notices about "limiting requests":
2019/07/03 16:43:30 [error] 896#896: *1405 limiting requests, excess: 6.324 by zone "wp", client: 111.111.111.111, server: domain.com, request: "POST /wp-admin/tools.php?page=better-search-replace&bsr-ajax=process_search_replace HTTP/1.1", host: "domain.com", referrer: "http://domain.com/wp-admin/tools.php?page=better-search-replace"
Is there something in NGINX config that causes the error and can we modify it in some way?