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Nginx HTTP/2 server push support

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Re: Nginx HTTP/2 server push support

#61

Post by vbtechguy »

jbergstroem wrote: post #30

I've recently spent more time using H2O over nginx, mainly because of its more complete support of HTTP 2 (push, cache-aware push, ..) but also out of the box support for brotli compression and mruby (think lua landscape for nginx). Even though nginx made it easier to build and ship third party modules separately, I feel like the module community (as well as distro maintainers/packagers) haven't followed suit. There'…

been using ngx_brotli with my Centmin Mod Nginx stack for what seems like years now https://community.centminmod.com/threads/how-to-use-brotli-c... :)

Re: Nginx HTTP/2 server push support

#62

Post by vbtechguy »

mozumder wrote: post #38

This doesn't seem to have a level of "cache-aware server push" that h2o (awesome http/2 server) has. Is there any info on how Nginx deals with cached server push?

been testing Nginx 1.13.9 via master branch with my Centmin Mod Nginx stack and HTTP/2 push testing by setting up cache aware HTTP/2 push via conditional preload link resource hints headers which only show up when a cookie is absent https://community.centminmod.com/threads/hurray-http-2-serve...

works so far but still waiting on bug fix https://trac.nginx.org/nginx/ticket/1478 as Nginx has pushed back 1.13.9 release until next week https://twitter.com/nginx/status/963442197436678144

Re: Nginx HTTP/2 server push support

#63

Post by ghusbands »

x25519 wrote: post #60
linsomniac wrote: post #45

Just a heads up, we tried to enable H2 with haproxy 1.8.3 last week and had to roll it back because of a Firefox bug. I believe it's this one, which doesn't seem to be getting much attention: https://bugzilla.mozilla.org/show_bug.cgi?id=1427256

That bug has been fixed in 1.8.3 ( https://www.mail-archive.com/haproxy@formilux.org/msg28501.h... ) Source: https://bugzilla.mozilla.org/show_bug.cgi?id=1427256#c7

Glad to see the bug is now updated/fixed, but the person you're replying to said they were already using 1.8.3. I guess you're saying their issues were caused by a different bug.

Re: Nginx HTTP/2 server push support

#64

Post by jbergstroem »

vbtechguy wrote: post #61
jbergstroem wrote: post #30

I've recently spent more time using H2O over nginx, mainly because of its more complete support of HTTP 2 (push, cache-aware push, ..) but also out of the box support for brotli compression and mruby (think lua landscape for nginx). Even though nginx made it easier to build and ship third party modules separately, I feel like the module community (as well as distro maintainers/packagers) haven't followed suit. There'…

been using ngx_brotli with my Centmin Mod Nginx stack for what seems like years now https://community.centminmod.com/threads/how-to-use-brotli-c... :)

The upstream repo from google hasn't been updated in over a year; issues are being opened questioning maintainership. It additionally breaks against more recent version combos of nginx/brotli.

There's an active fork here (which I also use on my remaining nginx instances) https://github.com/eustas/ngx_brotli

Re: Nginx HTTP/2 server push support

#65

Post by vbtechguy »

jbergstroem wrote: post #64
vbtechguy wrote: post #61

Earlier quoted context omitted.

been using ngx_brotli with my Centmin Mod Nginx stack for what seems like years now https://community.centminmod.com/threads/how-to-use-brotli-c... :)

The upstream repo from google hasn't been updated in over a year; issues are being opened questioning maintainership. It additionally breaks against more recent version combos of nginx/brotli. There's an active fork here (which I also use on my remaining nginx instances) https://github.com/eustas/ngx_brotli

yup i am using eustas fork for ngx_brotli works well :)

Re: Nginx HTTP/2 server push support

#66

Post by dalore »

josephscott wrote: post #49
dalore wrote: post #43

Earlier quoted context omitted.

Good questions. I was looking at H2O and they solve this using what they call http-casper: https://h2o.examp1e.net/configure/http2_directives.html#http... > When enabled, H2O maintains a fingerprint of the web browser cache, and cancels server-push suggested by the handlers if the client is known to be in possession of the content. The fingerprint is stored in a cookie... That sounds interesting solution. Actually it…

That is the theory. The real world however can be very messy. More than two years ago Khan Academy measured how this would work for them - http://engineering.khanacademy.org/posts/js-packaging-http2.... - here was their summary: > The reality is not so rosy. Due to degraded compression performance, the size of the data download with individual source files ends up being higher than with packages, despite having achie…

Well taking a site that was highly optimized for bundling and trying it unbundled on http2 is going to have poor performance.

You need to engineer it so you're downloading and using the javascript pieces as you go. Streaming your code and running it in a way. So the stuff you need more important goes first and stuff that doesn't later.

That way you get time to document interactive a lot quick. The user can start using the page.

With that in mind, http2 beats the pants of bundled js.

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