shift8

Hello,

Just marking this as resolved as we are now communicating directly via email. Tentative root cause in this scenario is the site was added with a trailing slash in our dashboard but in the plugin settings was added without a trailing slash.

Hello!

Thanks for using our service first of all!

I’m sorry to hear that you are having trouble. The site url has to be exactly what you entered in our dashboard system when you registered and added your site originally. Sometimes if you add a trailing slash “/” in one spot but not the other, it will not recognize the difference.

If you want, please provide the screenshots without the censored fields to [email protected] and I can look further for you.

Thanks

Going to mark this as resolved for now but feel free to reply if you have any other questions.

Thanks!

Hey there!

So I took a look into this for you and determined that something on your web servers side is blocking our CDN from pulling static assets.

If I login to one of our CDN servers and just try to grab the test URL from your server directly, it times out. This may appear intermittent to you because its possible (depending on your geographic location) that you are hitting different CDN endpoints so some may work and some may not :

]# wget https://family.interplan.com/wp-content/plugins/shift8-cdn/test/test.png
--2020-07-14 16:05:01--  https://family.interplan.com/wp-content/plugins/shift8-cdn/test/test.png
Resolving family.interplan.com (family.interplan.com)... 107.180.26.178
Connecting to family.interplan.com (family.interplan.com)|107.180.26.178|:443... failed: Connection timed out.
Retrying.

--2020-07-14 16:05:09--  (try: 2)  https://family.interplan.com/wp-content/plugins/shift8-cdn/test/test.png
Connecting to family.interplan.com (family.interplan.com)|107.180.26.178|:443... failed: Connection timed out.
Retrying.

--2020-07-14 16:05:18--  (try: 3)  https://family.interplan.com/wp-content/plugins/shift8-cdn/test/test.png
Connecting to family.interplan.com (family.interplan.com)|107.180.26.178|:443... failed: Connection timed out.
Retrying.

--2020-07-14 16:05:28--  (try: 4)  https://family.interplan.com/wp-content/plugins/shift8-cdn/test/test.png
Connecting to family.interplan.com (family.interplan.com)|107.180.26.178|:443... failed: Connection timed out.
Retrying.

My guess is that perhaps your web host has a throttling mechanism in place to block too many requests from the same IP address. This could be a really sensitive denial of service prevention mechanism.

Our CDN will request static assets and try to cache them so we dont request too much but for a busy site, especially if you are sending no-cache headers (you can check that), your web host may be thinking that our CDN is trying to DoS attach your site. They may not be able to tell the difference because from their perspective we are just requesting a lot of URLs for your site.

I notice that you have a plugin called “Shield security” installed, lets start by disabling that first and see if that fixes your problem. If it doesnt fix your problem then I would recommend reaching out to your web host to see if they can elaborate if they have a maximum number of connections per second (or similar) threshold protection.

Hopefully its just that “Shield security” plugin, sometimes wordpress security plugins aren’t that smart and cause more problems than they solve.

Hope this helps!

Sounds good! In some scenarios we may be honouring and reading that no-cache header so it might be best to just not send it at all and let us handle caching on the CDN

Hello,

So the above link works in desktop but not mobile? Or does the direct post link work but the post is not showing up on a post grid page?

If this post link doesnt show up in mobile, let me know what mobile device exactly as it works on an iphone X.

Again its extremely highly unlikely that the CDN plugin is causing this type of behavior. All the cdn plugin does is rewrite links to images, css and js files to go through the CDN. That would not affect a post not displaying in this way unless something is wrong with jquery on the post landing page somehow that is causing that to break. Even if that were the case, the problem would be in the jQuery on your site , not the CDN.

Thanks,

Kevin

Hello,

When I found in one of the post that the backslash will result error when checking the CDN, I delete my site in the pull zone without disable Shift8 CDN, and I add new site, then enter the API key and prefix.

Did I made mistake by doing that ?

No not at all. You can delete the site in our dashboard but keep the plugin on your wordpress site. The plugin just needs to have the information in order to connect to our service (api key, site url, etc). You can re-set those and re-save whenever you like. It needs to match whats in our dashboard obviously.

PS: I just run pingdom again. the load time seems to decrease
Thank you so much

Fantastic – thats what I like to hear!

Thanks!