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Going over �the edge

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The internet is evolving

(and our tools & capabilities are, too)

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I’m a Cloudflare nerd

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WTF is Cloudflare?

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WTF is Cloudflare?

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??

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WTF is Cloudflare?

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Request

Response

Origin

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Request

Response

Origin

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Request

Response

Origin

Edge

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Request

Response

Origin

Edge

APIs

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Request

Response

Request

Response

Origin

Edge

APIs

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Request

Response

Request

Response

Origin

Edge

APIs

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DNS

Analytics

Email

Images

Domains

Databases

Routing & Tiering

Pages

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Request

Response

Origin

Edge

APIs

Request

Response

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Request

Response

Edge

APIs

Edge

Edge

Edge

Edge

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Request

Response

Edge

APIs

Edge

Edge

Edge

Edge

Storage

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Request

Response

Edge

APIs

Edge

Edge

Edge

Edge

Storage

Compute

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Request

Response

Edge

APIs

Edge

Edge

Edge

Edge

Storage

Compute

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Request

Response

Edge

APIs

Edge

Edge

Edge

Edge

Storage

Compute

CACHE

CACHE

CACHE

CACHE

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Edge

APIs

Edge

Edge

Edge

Storage

Compute

CACHE

CACHE

CACHE

Response

Request

Edge

CACHE

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COOL STUFF

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<script data-cfasync="false" type="text/javascript">

var freestar = freestar || {};

freestar.queue = freestar.queue || [];

freestar.config = freestar.config || {};

freestar.config.enabled_slots = [];

freestar.initCallback = function () { (freestar.config.enabled_slots.length === 0) ? freestar.initCallbackCalled = false : freestar.newAdSlots(freestar.config.enabled_slots) }

</script>

<script src="https://a.pub.network/daysoftheyear-com/pubfig.min.js" async></script>

​

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<script data-cfasync="false" type="text/javascript">

var freestar = freestar || {};

freestar.queue = freestar.queue || [];

freestar.config = freestar.config || {};

freestar.config.enabled_slots = [];

freestar.initCallback = function () { (freestar.config.enabled_slots.length === 0) ? freestar.initCallbackCalled = false : freestar.newAdSlots(freestar.config.enabled_slots) }

</script>

<script src="https://www.daysoftheyear.com/workers/freestar.js" async></script>

​

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MORE COOL STUFF

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/days/cat-day/

?timezone_offset=-8

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/days/cat-day/

?timezone_offset=-8

&device_type=mobile

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98% cache hit ratio

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OTHER COOL STUFF

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REALLY COOL STUFF

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<img src="bob.jpg" alt="cat" />

280px

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<picture>�

<source media="(min-width: 1200px)" srcset="/cdn-cgi/image/width=1200,height=300,quality=75/cat.jpg 1200w, /cdn-cgi/image/dpr=2,width=1200,height=300,quality=75/cat.jpg 2400w" sizes="100wv" height="300" width="1200" style="--aspect-ratio:4/1;">��<img loading="eager" fetchpriority="high" decoding="async" width="350" height="350" alt="cat" style="--aspect-ratio:1/1;" src="/cdn-cgi/image/width=350,height=350,quality=75/cat.jpg" srcset="/cdn-cgi/image/width=250,height=250,quality=75/cat.jpg 250w, /cdn-cgi/image/width=300,height=300,quality=75/cat.jpg 300w, /cdn-cgi/image/width=400,height=400,quality=75/cat.jpg 400w" sizes="(max-width: 500px) calc(100vw - 20px), (max-width: 1000px) calc(50vw - 20px), 500px">�

</picture>

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src="/cdn-cgi/image/width=350,height=350,quality=75/cat.jpg"

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400x400

1200x675

/cdn-cgi/image/dpr=1%2Cf=auto%2Cfit=pad%2Cheight=675%2Cq=85%2Csharpen=2%2Cwidth=1200/wp-content/uploads/s1mple.png

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# Block leaky Cloudflare endpoints

# --------------------------------

User-agent: *

User-agent: AdsBot-Google

Disallow: /cdn-cgi/

Disallow: /cdn-cgi/bm/cv/

Disallow: /cdn-cgi/challenge-platform/

Disallow: /cdn-cgi/images/trace/

Disallow: /cdn-cgi/rum

Disallow: /cdn-cgi/scripts/

Disallow: /cdn-cgi/styles/

Disallow: /cdn-fpw/sxg/

​

​

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Going over �the edge

Jono Alderson

Independent technical SEO consultant

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@jonoalderson