Sudden bandwidth increase on my site

[jay3112]

Site name: prod-relicdao-0
Site ID e76a1e10-3778-4435-865d-592db835598f
Problem: Huge bandwidth increase lately without actual audience increase.

We had an issue with the similar site, we deleted the site and created the same again, the auto increase in the bandwidth continues, not sure how to debug the issue.

This site has 10-20 visits a day and it’s optimized, however for some reason for almost a week already, the bandwidth has increased significantly. Unfortunately, I didn’t find anything that allows me to understand the reason independently, so I need your assistance.

[nathanmartin]

@jay3112

and it’s optimized

This is what I see only visiting the landing page:

All I see for the landing page is:

[jay3112]

We only have like a 10-20 visits on the page, and this bandwidth is unexpected.
we had the same deployement since a month ago too, nothing changed in the deployment, we are thinking it might be a bot attack, but unable to understand the exact issue,

Also would appreciate any changes that you think we can make to our webapp to reduce the requests on the login page

[nathanmartin]

@jay3112

We only have like a 10-20 visits on the page

Where are you getting that particular measurement from?

@jay3112

we are thinking it might be a bot attack

I’ve only seen the landing page, but that seems likely.

I know that Netlify err on the side of keeping your site up, and don’t yet have any kind of “billing limits” or “kill switch” - but that wouldn’t help you determine the root cause anyway.

They usually point people to this support guide:

https://answers.netlify.com/t/support-guide-how-to-reduce-your-sites-bandwidth-usage-without-reducing-traffic/42768

Or suggest that they implement Edge Functions as per:

Limit bandwidth to avoid high billing caused by DDoS?

Hi there, thanks for reaching out! Once thing you could consider is utilizing an Edge Function to block traffic from unwanted user agents or countries. You can see some examples of Edge Functions here to get an idea of how to create one: https://edge-functions-examples.netlify.app/ I hope this helps!

If you’re on a paid plan, (which I’d imagine you are with that level of bandwidth used), you could reach out to support directly via the support form:
https://www.netlify.com/support/

When this user reached out to support they found the site was being repeatedly crawled by Bytespider
https://answers.netlify.com/t/my-site-mostly-text-is-now-using-up-lots-of-bandwidth/113574

[jay3112]

@nathanmartin

Where are you getting that particular measurement from?

We usually do call an API on the user login page to deteermine this,

can we know the exact Useragent from which this traffic is coming from, so we can block or take exact action,

Also we thought netlify would restrict these kind of bot attacks in case there is something like that - Security at Netlify, do you think it is something that should be blocked by netlify from accessing the site ?

[nathanmartin]

Note: I don’t work for Netlify.

@jay3112

can we know the exact Useragent from which this traffic is coming from, so we can block or take exact action

That’s why you might want to contact support directly via the form, rather than this forum post.

As per the thread I linked, I’ve seen people be provided detailed information by support ticket.

@jay3112

do you think it is something that should be blocked by netlify from accessing the site ?

I’ve got no idea, I don’t know what issue you’re actually facing.

[jay3112]

thank you so much for the help and resources tho.

[charlottechhum]

Hi Jay, I appreciate you coming to the forums for help! I’m making a very special exception in your team’s case and I’m going to assist you in our Helpdesk via the ticket we’ve got going on with you.

Thank you Nathan for providing this help so far! Much appreciated!