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Please Don’t Share Our Links on Mastodon: Here’s Why! | itsfoss.com (mastodon.social)

submitted 4 months ago by [email protected] to c/[email protected]

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[–] [email protected] 56 points 4 months ago* (last edited 4 months ago) (3 children)

Just put the site behind a cache, like Cloudflare, and set your cache control headers properly?

They mention that they are already using Cloudflare. I'm confused about what is actually causing the load. They don't mention any technical details, but it does kinda sound like their cache control headers are not set properly. I'm too lazy to check for myself though...

[–] [email protected] 21 points 4 months ago* (last edited 4 months ago)

I've found that if left on default settings, CloudFlare is not that great at caching. It requires a bit of configuration to really make it sing. itsfoss.com thought they were "using CloudFlare" but probably not to it's fullest potential.

[–] [email protected] 21 points 4 months ago

Even without Cloudflare, simple NGINX microcaching would help a ton there.

It's a blog, it doesn't need to regenerate a new page every single time for anonymous users. There's no reason it shouldn't be able to sustain 20k requests per second on a single server. Even a one second cache on the backend for anonymous users would help a ton there.

They have Cloudflare in front, the site should be up with the server being turned off entirely.

[–] [email protected] 10 points 4 months ago* (last edited 4 months ago) (2 children)

I'm confused about what is actually causing the load.

Thousands of instances simultaneously fetching link previews from a VPS w/2GB RAM.

https://mastodon.social/@itsfoss/112369476450719989

[–] [email protected] 15 points 4 months ago

If caching is properly configured, the cache (Cloudflare) will see thousands of requests, but the VPS should only see one request.

[–] [email protected] 0 points 4 months ago (1 children)

This should be front and center, caching won’t be able to make up for that…

[–] [email protected] 26 points 4 months ago* (last edited 4 months ago)

Of course it will, cloudflare is in front of it, they can definitely handje this traffic as long as itsfoss bothers to set correct caching headers for cloudflare to use. That's the entire point of cloudflare...