Review my Caching for WordPress

Emoun

I want to migrate my WordPress site from shared hosting (100 concurrent visitors) to a DigitalOcean Droplet. I also want to know if my WordPress caching approach is correct.

VPS: DigitalOcean AMD Premium, 1 CPU, 1 GB RAM, 25 GB SSD.

Page Cache:

NGINX FastCGI cache installed.
NGINX Helper WordPress plugin installed.

Object Cache:

Redis Object Cache plugin is NOT installed to save RAM and CPU resources.

Super Page Cache for Cloudflare free plugin is installed.

The Super Page Cache for Cloudflare plugin helps make your website blazing fast by taking website caching to the next level. This plugin caches not only static files (e.g., CSS, JS, images, etc.) but also the HTML webpages generated by WordPress, both at the server disk level and in the global Cloudflare CDN.

Is this setup alright?

portofacil

1 GB RAM is not enough. At least 2 GB are needed for 100 concurrent users. For my clients, I refuse to install WordPress on servers with less than 4 GB.

Also, 2 vCPUs would be of benefit for your blog.

Emoun

portofacil

I have upgraded the server to 2 CPU & 4 GB RAM, Thanks

marty

Also depends on the type of site/plugins in use, e.g. 100 concurrent checkouts on WooCommerce is vastly different to 100 concurrent visits to a static page. :-)
Object cache may still be useful/better.
I generally avoid 2 lots of page caching but it can work, as long as you're aware of possible stale cache issues - i.e. where WP is trying to clear/refresh both caches at once on updating a post, which one wins?

Emoun

marty

I understand your concern regarding 2 page cache conflicts.

Here is some discussion about Ngnix Fastcgi & Super Page Cache for Cloudflare plugins