HTTP header for multi language website

Guybrushthepirate · Feb 19, 2019

Hi all,

having a multi language website (URLs are like www.mydomain.com/language/) I am wondering if there is any configuration for the HTTP header which is better than others.

So far I'm using 302 redirects based on language detection and hreflang tags on each page.

Is there something very important that I am missing?

Thanks for helping.

KHR · Feb 19, 2019

Hope this can help: https://stackoverflow.com/questions/36925218/which-http-headers-should-i-set-for-multi-language-site

Guybrushthepirate · Feb 19, 2019

K.H.R said:
Hope this can help: https://stackoverflow.com/questions/36925218/which-http-headers-should-i-set-for-multi-language-site

Thanks. In my research I've come across that Q&A on Stackoverflow, but failed to fully understand the part about the vary header. Is it necessary?

Yee · Feb 19, 2019

Depends, if you're a good boi you should.

Guybrushthepirate · Feb 19, 2019

Yee said:
Depends, if you're a good boi you should.

Ok... thanks. So, it won't be necessary but its a plus. I understand that hreflang tag is a good enough signal for search engines.

Ok, so there's no magic SEO http header configuration that I should use I guess. Is 302 redirections with hreflang tags (and, to be a good boy, the use of vary header) good enough or can it be improved?

Yee · Feb 19, 2019

With a good boi I mean that after a redirect you would always issue a vary otherwise the outcome is not specified.

Guybrushthepirate · Feb 19, 2019

Yee said:
With a good boi I mean that after a redirect you would always issue a vary otherwise the outcome is not specified.

Uhm... I don't understand this completely. Can you address me to some resource or explain it a little bit more if you have time/will? Thanks

Yee · Feb 19, 2019

https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Vary

Guybrushthepirate · Feb 19, 2019

Yee said:
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Vary

Thank you for pointing me to that link, I'll do my homeworks and try to figure out this.

Yee · Feb 19, 2019

So basically when a user changes something on the server you would like to inform the cache how to response on this for subsequent request.

For example if you're on mobile phone and visited a website and you change the language to "IT" this issues a HTTP 30X to the server who could response with a vary: user-agent and/or Language. By this the cache knows which content it should deliver to someone when it finds a user-agent with the same headers.

If you don't specify a vary header than the outcome is not specified, caches depends on these headers in order to make a decision which content it should serve to a certain user-agent/browser

Guybrushthepirate said:
Uhm... I don't understand this completely. Can you address me to some resource or explain it a little bit more if you have time/will? Thanks

Guybrushthepirate · Feb 19, 2019

Yee said:
So basically when a user changes something on the server you would like to inform the cache how to response on this for subsequent request.

For example if you're on mobile phone and visited a website and you change the language to "IT" this issues a HTTP 30X to the server who could response with a vary: user-agent and/or Language. By this the cache knows which content it should deliver to someone when it finds a user-agent with the same headers.

If you don't specify a vary header than the outcome is not specified, caches depends on these headers in order to make a decision which content it should serve to a certain user-agent/browser

Get it now! Thank you so much for taking some time to help.

HTTP header for multi language website

Guybrushthepirate

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