cloudflare
tcp/443 tcp/80 tcp/8443
Open service 2606:4700:3037::6815:5379:80 · abtest.tech
2026-01-25 01:49
HTTP/1.1 308 Permanent Redirect
Date: Sun, 25 Jan 2026 01:49:28 GMT
Content-Type: text/plain
Transfer-Encoding: chunked
Connection: close
Location: https://abtest.tech/
Refresh: 0;url=https://abtest.tech/
server: cloudflare
cf-cache-status: DYNAMIC
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Server-Timing: cfCacheStatus;desc="DYNAMIC"
Server-Timing: cfEdge;dur=12,cfOrigin;dur=8
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=2pkcOjxOqj2cAi1rKtBAmJw%2Btg0Y6zJM3jjZBOtf4xxWTrQT6iRHJPzlUhNDjuSb%2F510i0qcIbU4fqt2oQkuNxiIShPzkWh5UNLQ4lRCVzWwEWM4%2B1OC"}]}
CF-RAY: 9c341d3e19f4fceb-SIN
alt-svc: h3=":443"; ma=86400
Redirecting...
Open service 172.67.175.211:443 · abtest.tech
2026-01-25 01:49
HTTP/1.1 200 OK
Date: Sun, 25 Jan 2026 01:49:29 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close
Age: 0
Cache-Control: public, max-age=0, must-revalidate
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=JBO6OHU0BT%2BfIhax3v7T54KZQdxKpbO5tNg3ZfTbWq2lGvfz6lSwOkUUCMJ7uRog0eF%2BlsfBcEzpOAxlxVjW7i%2B0VJSv9gRz0ZPL"}]}
content-security-policy: script-src 'self' 'nonce-seCgp3BAoywPla4VluCkug=='
content-security-policy-report-only: script-src 'self' 'nonce-seCgp3BAoywPla4VluCkug=='; report-uri /
Server-Timing: cfCacheStatus;desc="DYNAMIC"
Server-Timing: cfEdge;dur=11,cfOrigin;dur=214
link: <./_app/immutable/assets/remixicon.DtqDn7Wb.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/iconfont.DwBaTteH.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/2.KaETSLq7.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/modal.pHYtDzW-.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/4.BxU_NgMJ.css>; rel="preload";as="style"; nopush, <./_app/immutable/entry/start.ItmoWeC1.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/Cu7SWove.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/DH2_B8fx.js>; rel="modulepreload"; nopush, <./_app/immutable/entry/app.DEemPfCx.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/jKjWACjA.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/IHki7fMi.js>; rel="modulepreload"; nopush, <./_app/immutable/nodes/0.DKP4hKzI.js>; rel="modulepreload"; nopush, <./_app/immutable/nodes/2.DMJaUXMj.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/D6rgpqA-.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/5SC1rdOt.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CPgdM8Fc.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CgU5AtxT.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/COI3SUi2.js>; rel="modulepreload"; nopush, <./_app/immutable/nodes/4.D9R06Fta.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/D0QH3NT1.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/Drj1NthL.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CqgDml68.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CbKr1QjC.js>; rel="modulepreload"; nopush
Server: cloudflare
Set-Cookie: limiterid=6ISQl5dEXggXLryy1o312%3B67a416acdc7e3557490fbf834068e8903ef162eecd70d707e7bff7b9faa73fd8; Max-Age=604800; Path=/; HttpOnly; Secure; SameSite=Strict
strict-transport-security: max-age=63072000
x-sveltekit-page: true
x-vercel-cache: MISS
x-vercel-id: yul1::iad1::6ksr2-1769305768991-e2d71b95eb8b
cf-cache-status: DYNAMIC
vary: accept-encoding
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
CF-RAY: 9c341d3fe9a636fe-YYZ
alt-svc: h3=":443"; ma=86400
Page title: AB Test's blogMobile menu
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" href="./favicon.png" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link href="./_app/immutable/assets/remixicon.DtqDn7Wb.css" rel="stylesheet">
<link href="./_app/immutable/assets/iconfont.DwBaTteH.css" rel="stylesheet">
<link href="./_app/immutable/assets/2.KaETSLq7.css" rel="stylesheet">
<link href="./_app/immutable/assets/modal.pHYtDzW-.css" rel="stylesheet">
<link href="./_app/immutable/assets/4.BxU_NgMJ.css" rel="stylesheet"><title>AB Test's blog</title><!-- HEAD_svelte-a47h6n_START --><!-- HEAD_svelte-a47h6n_END -->
</head>
<body data-sveltekit-preload-data="hover" class="flex flex-col min-h-screen">
<div style="display: contents"> <main class="flex flex-col flex-1 p-0"><header class="p-1 mb-6 navbar text-primary-content bg-primary svelte-1cl0lid"><div class="navbar-start"><a href="/" aria-label="home"><div class="name-container flex items-center svelte-a0ut9w"><img src="https://cdn.hackernoon.com/avatars/robot-a5.png" alt="avatar" class="svelte-a0ut9w"> <div class="website-name text-txt rm:text-lg text-xl hackernoon svelte-a0ut9w">abtest</div> <div class="website-details svelte-a0ut9w"><span class="title text-txt sm:text-lg text-xl hackernoon svelte-a0ut9w">abtest's Blog</span> <br> <span class="subtitle text-secondary svelte-a0ut9w">AB Test</span></div> <div class="opacity-0 text-txt rm:text-lg text-xl hackernoon svelte-a0ut9w">abtest</div> <div class="opacity-0"><span class="title text-txt sm:text-lg text-xl hackernoon svelte-a0ut9w">abtest's Blog</span> <br> <span class="subtitle text-secondary svelte-a0ut9w">AB Test</span></div> </div></a></div> <div class="hidden md:block navbar-center"><ul class="menu menu-horizontal overflow-hidden text-txt"><li><a href="https://hackernoon.com/u/abtest">Read My Stories</a></li></ul></div> <div class="navbar-end"><a href="/about" class="hidden lg:inline-flex btn bg-base-100 btn-sm rounded-btn bg-secondary border-none mr-2">About AB Test</a> <div class="dropdown dropdown-end"><div><a class="hidden lg:inline-flex text-txt" href="/login" data-svelte-h="svelte-qn8vay">Login</a> <button class="lg:hidden navbar-burger flex items-center p-3" data-svelte-h="svelte-sf8jzs"><svg class="block h-4 w-4 fill-current" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><title>Mobile menu</title><path d="M0 3h20v2H0V3zm0 6h20v2H0V9zm0 6h20v2H0v-2z"></path></svg></button></div> <ul tabindex="-1" class="menu dropdown-content prose prose:invert mt-3 z-[1] p-2 shadow bg-base-100 rounded-box w-52"><li><a href="/about">About AB Test</a></li> <li><a href="/login" data-svelte-h="svelte-1vxwqu1">Login</a></li></ul></div></div></header> <main class="container flex flex-col flex-1" style="padding: 0px;"> <div class="grid grid-cols-1 gap-4 md:grid-cols-3"><a href="/why-safe-t-tests-outperform-classical-methods-in-large-scale-experiments" class="card bg-base-100 shadow-xl hover:bg-base-200"><figure class="h-1/2"><img src="https://hackernoon.imgix.net/images/5wpKgV75aONqkTJlafw2yQmK9yd2-cl038vf.png" alt="cover" class="h-full w-full object-cover"></figure> <div class="card-body"><h2 class="card-title line-clamp-3">Why Safe T-Tests Outperform Classical Methods in Large-Scale Experiments</h2> <p class="text-xs text-gray-500">12 Aug 2025</p> <p class="line-clamp-3">Safe testing offers faster, more reliable results than p-values for A/B tests. Discover how safe t-tests and E-variables are transforming analytics.</p></div> </a><a href="/what-162-vinted-ab-tests-reveal-about-your-conversion-metrics" class="card bg-base-100 shadow-xl hover:bg-base-200"><figure class="h-1/2"><img src="https://hackernoon.imgix.net/images/5wpKgV75aONqkTJlafw2yQmK9yd2-vm038qs.png" alt="cover" class="h-full w-full object-cover"></figure> <div class="card-body"><h2 class="card-title line-clamp-3">What 162 Vinted A/B Tests Reveal About Your Conversion Metrics</h2> <p class="text-xs text-gray-500">12 Aug 2025</p> <p class="line-clamp-3">Inside Vinted’s 162 A/B tests: Safe vs classica
Open service 172.67.175.211:80 · abtest.tech
2026-01-25 01:49
HTTP/1.1 308 Permanent Redirect
Date: Sun, 25 Jan 2026 01:49:28 GMT
Content-Type: text/plain
Transfer-Encoding: chunked
Connection: close
Location: https://abtest.tech/
Refresh: 0;url=https://abtest.tech/
server: cloudflare
cf-cache-status: DYNAMIC
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Server-Timing: cfCacheStatus;desc="DYNAMIC"
Server-Timing: cfEdge;dur=14,cfOrigin;dur=15
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=cNU2foOQWs%2B6V42nFpQRe%2FBDJ5qM2JUSG88aKmMYkPVE8BPtgUe3THZaj7Who4a4rmuFvDkkq%2BtYfuvGoh8wBQ7qGqUj5V1imlhs"}]}
CF-RAY: 9c341d3dcccd7721-EWR
alt-svc: h3=":443"; ma=86400
Redirecting...
Open service 2606:4700:3037::6815:5379:8443 · abtest.tech
2026-01-25 01:49
HTTP/1.1 522 <none> Date: Sun, 25 Jan 2026 01:49:49 GMT Content-Type: text/plain; charset=UTF-8 Content-Length: 15 Connection: close Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Expires: Thu, 01 Jan 1970 00:00:01 GMT Referrer-Policy: same-origin Server-Timing: cfEdge;dur=19598,cfOrigin;dur=0 X-Frame-Options: SAMEORIGIN Server: cloudflare CF-RAY: 9c341d43bc2fd232-FRA alt-svc: h3=":8443"; ma=86400 error code: 522
Open service 2606:4700:3037::6815:5379:443 · abtest.tech
2026-01-25 01:49
HTTP/1.1 200 OK
Date: Sun, 25 Jan 2026 01:49:29 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close
Age: 0
Cache-Control: public, max-age=0, must-revalidate
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=4XusJAPJQKD7t%2F5Dk5KFGskgjTVx2DjBm908p98OGXfzIwp%2FAfUcmdGd%2Bw6vn%2BIf6uhq60dvpIMKUPVPej2zdKqFX%2FPWRvXgahGXa%2FL157qFvnPPrgVt"}]}
content-security-policy: script-src 'self' 'nonce-T8Ki12AIOx01RMVzl9cmaQ=='
content-security-policy-report-only: script-src 'self' 'nonce-T8Ki12AIOx01RMVzl9cmaQ=='; report-uri /
Server-Timing: cfCacheStatus;desc="DYNAMIC"
Server-Timing: cfEdge;dur=13,cfOrigin;dur=264
link: <./_app/immutable/assets/remixicon.DtqDn7Wb.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/iconfont.DwBaTteH.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/2.KaETSLq7.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/modal.pHYtDzW-.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/4.BxU_NgMJ.css>; rel="preload";as="style"; nopush, <./_app/immutable/entry/start.ItmoWeC1.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/Cu7SWove.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/DH2_B8fx.js>; rel="modulepreload"; nopush, <./_app/immutable/entry/app.DEemPfCx.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/jKjWACjA.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/IHki7fMi.js>; rel="modulepreload"; nopush, <./_app/immutable/nodes/0.DKP4hKzI.js>; rel="modulepreload"; nopush, <./_app/immutable/nodes/2.DMJaUXMj.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/D6rgpqA-.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/5SC1rdOt.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CPgdM8Fc.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CgU5AtxT.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/COI3SUi2.js>; rel="modulepreload"; nopush, <./_app/immutable/nodes/4.D9R06Fta.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/D0QH3NT1.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/Drj1NthL.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CqgDml68.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CbKr1QjC.js>; rel="modulepreload"; nopush
Server: cloudflare
Set-Cookie: limiterid=txh2YO7jfvKlZjl591qEE%3B9b2650984c405747c864e1d44bab8c4db75c3795c931418d243fc5f5ec3cf6b6; Max-Age=604800; Path=/; HttpOnly; Secure; SameSite=Strict
strict-transport-security: max-age=63072000
x-sveltekit-page: true
x-vercel-cache: MISS
x-vercel-id: fra1::iad1::2hg48-1769305769361-d75331e16c7e
cf-cache-status: DYNAMIC
vary: accept-encoding
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
CF-RAY: 9c341d425e015d63-FRA
alt-svc: h3=":443"; ma=86400
Page title: AB Test's blogMobile menu
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" href="./favicon.png" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link href="./_app/immutable/assets/remixicon.DtqDn7Wb.css" rel="stylesheet">
<link href="./_app/immutable/assets/iconfont.DwBaTteH.css" rel="stylesheet">
<link href="./_app/immutable/assets/2.KaETSLq7.css" rel="stylesheet">
<link href="./_app/immutable/assets/modal.pHYtDzW-.css" rel="stylesheet">
<link href="./_app/immutable/assets/4.BxU_NgMJ.css" rel="stylesheet"><title>AB Test's blog</title><!-- HEAD_svelte-a47h6n_START --><!-- HEAD_svelte-a47h6n_END -->
</head>
<body data-sveltekit-preload-data="hover" class="flex flex-col min-h-screen">
<div style="display: contents"> <main class="flex flex-col flex-1 p-0"><header class="p-1 mb-6 navbar text-primary-content bg-primary svelte-1cl0lid"><div class="navbar-start"><a href="/" aria-label="home"><div class="name-container flex items-center svelte-a0ut9w"><img src="https://cdn.hackernoon.com/avatars/robot-a5.png" alt="avatar" class="svelte-a0ut9w"> <div class="website-name text-txt rm:text-lg text-xl hackernoon svelte-a0ut9w">abtest</div> <div class="website-details svelte-a0ut9w"><span class="title text-txt sm:text-lg text-xl hackernoon svelte-a0ut9w">abtest's Blog</span> <br> <span class="subtitle text-secondary svelte-a0ut9w">AB Test</span></div> <div class="opacity-0 text-txt rm:text-lg text-xl hackernoon svelte-a0ut9w">abtest</div> <div class="opacity-0"><span class="title text-txt sm:text-lg text-xl hackernoon svelte-a0ut9w">abtest's Blog</span> <br> <span class="subtitle text-secondary svelte-a0ut9w">AB Test</span></div> </div></a></div> <div class="hidden md:block navbar-center"><ul class="menu menu-horizontal overflow-hidden text-txt"><li><a href="https://hackernoon.com/u/abtest">Read My Stories</a></li></ul></div> <div class="navbar-end"><a href="/about" class="hidden lg:inline-flex btn bg-base-100 btn-sm rounded-btn bg-secondary border-none mr-2">About AB Test</a> <div class="dropdown dropdown-end"><div><a class="hidden lg:inline-flex text-txt" href="/login" data-svelte-h="svelte-qn8vay">Login</a> <button class="lg:hidden navbar-burger flex items-center p-3" data-svelte-h="svelte-sf8jzs"><svg class="block h-4 w-4 fill-current" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><title>Mobile menu</title><path d="M0 3h20v2H0V3zm0 6h20v2H0V9zm0 6h20v2H0v-2z"></path></svg></button></div> <ul tabindex="-1" class="menu dropdown-content prose prose:invert mt-3 z-[1] p-2 shadow bg-base-100 rounded-box w-52"><li><a href="/about">About AB Test</a></li> <li><a href="/login" data-svelte-h="svelte-1vxwqu1">Login</a></li></ul></div></div></header> <main class="container flex flex-col flex-1" style="padding: 0px;"> <div class="grid grid-cols-1 gap-4 md:grid-cols-3"><a href="/why-safe-t-tests-outperform-classical-methods-in-large-scale-experiments" class="card bg-base-100 shadow-xl hover:bg-base-200"><figure class="h-1/2"><img src="https://hackernoon.imgix.net/images/5wpKgV75aONqkTJlafw2yQmK9yd2-cl038vf.png" alt="cover" class="h-full w-full object-cover"></figure> <div class="card-body"><h2 class="card-title line-clamp-3">Why Safe T-Tests Outperform Classical Methods in Large-Scale Experiments</h2> <p class="text-xs text-gray-500">12 Aug 2025</p> <p class="line-clamp-3">Safe testing offers faster, more reliable results than p-values for A/B tests. Discover how safe t-tests and E-variables are transforming analytics.</p></div> </a><a href="/what-162-vinted-ab-tests-reveal-about-your-conversion-metrics" class="card bg-base-100 shadow-xl hover:bg-base-200"><figure class="h-1/2"><img src="https://hackernoon.imgix.net/images/5wpKgV75aONqkTJlafw2yQmK9yd2-vm038qs.png" alt="cover" class="h-full w-full object-cover"></figure> <div class="card-body"><h2 class="card-title line-clamp-3">What 162 Vinted A/B Tests Reveal About Your Conversion Metrics</h2> <p class="text-xs text-gray-500">12 Aug 2025</p> <p class="line-clamp-3">Inside Vinted’s 162 A/B tests: Safe vs classica
Open service 104.21.83.121:443 · abtest.tech
2026-01-25 01:49
HTTP/1.1 200 OK
Date: Sun, 25 Jan 2026 01:49:29 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close
Age: 0
Cache-Control: public, max-age=0, must-revalidate
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=mkqpX1wld99UnvZDk%2BVuq2xeylLBwSL7sT3M49cSdXAUrwpO2NdwpF712znkb3HdhsUiRp0K7%2FFbNxipEeVlpHvJ5%2FB1bRNfaNk5"}]}
content-security-policy: script-src 'self' 'nonce-+dAIZOnY/gQoL0ngThj9Dg=='
content-security-policy-report-only: script-src 'self' 'nonce-+dAIZOnY/gQoL0ngThj9Dg=='; report-uri /
Server-Timing: cfCacheStatus;desc="DYNAMIC"
Server-Timing: cfEdge;dur=4,cfOrigin;dur=241
link: <./_app/immutable/assets/remixicon.DtqDn7Wb.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/iconfont.DwBaTteH.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/2.KaETSLq7.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/modal.pHYtDzW-.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/4.BxU_NgMJ.css>; rel="preload";as="style"; nopush, <./_app/immutable/entry/start.ItmoWeC1.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/Cu7SWove.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/DH2_B8fx.js>; rel="modulepreload"; nopush, <./_app/immutable/entry/app.DEemPfCx.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/jKjWACjA.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/IHki7fMi.js>; rel="modulepreload"; nopush, <./_app/immutable/nodes/0.DKP4hKzI.js>; rel="modulepreload"; nopush, <./_app/immutable/nodes/2.DMJaUXMj.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/D6rgpqA-.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/5SC1rdOt.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CPgdM8Fc.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CgU5AtxT.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/COI3SUi2.js>; rel="modulepreload"; nopush, <./_app/immutable/nodes/4.D9R06Fta.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/D0QH3NT1.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/Drj1NthL.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CqgDml68.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CbKr1QjC.js>; rel="modulepreload"; nopush
Server: cloudflare
Set-Cookie: limiterid=Ml8QqLZAiTYwMQ7dhn9Yj%3B868f538810cb752b5e253c4cb42ad5ba3d506b8bd10727e64be176f55ae7e1bd; Max-Age=604800; Path=/; HttpOnly; Secure; SameSite=Strict
strict-transport-security: max-age=63072000
x-sveltekit-page: true
x-vercel-cache: MISS
x-vercel-id: fra1::iad1::qhnrt-1769305768831-fa892b34ef9c
cf-cache-status: DYNAMIC
vary: accept-encoding
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
CF-RAY: 9c341d3f19b8d27a-FRA
alt-svc: h3=":443"; ma=86400
Page title: AB Test's blogMobile menu
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" href="./favicon.png" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link href="./_app/immutable/assets/remixicon.DtqDn7Wb.css" rel="stylesheet">
<link href="./_app/immutable/assets/iconfont.DwBaTteH.css" rel="stylesheet">
<link href="./_app/immutable/assets/2.KaETSLq7.css" rel="stylesheet">
<link href="./_app/immutable/assets/modal.pHYtDzW-.css" rel="stylesheet">
<link href="./_app/immutable/assets/4.BxU_NgMJ.css" rel="stylesheet"><title>AB Test's blog</title><!-- HEAD_svelte-a47h6n_START --><!-- HEAD_svelte-a47h6n_END -->
</head>
<body data-sveltekit-preload-data="hover" class="flex flex-col min-h-screen">
<div style="display: contents"> <main class="flex flex-col flex-1 p-0"><header class="p-1 mb-6 navbar text-primary-content bg-primary svelte-1cl0lid"><div class="navbar-start"><a href="/" aria-label="home"><div class="name-container flex items-center svelte-a0ut9w"><img src="https://cdn.hackernoon.com/avatars/robot-a5.png" alt="avatar" class="svelte-a0ut9w"> <div class="website-name text-txt rm:text-lg text-xl hackernoon svelte-a0ut9w">abtest</div> <div class="website-details svelte-a0ut9w"><span class="title text-txt sm:text-lg text-xl hackernoon svelte-a0ut9w">abtest's Blog</span> <br> <span class="subtitle text-secondary svelte-a0ut9w">AB Test</span></div> <div class="opacity-0 text-txt rm:text-lg text-xl hackernoon svelte-a0ut9w">abtest</div> <div class="opacity-0"><span class="title text-txt sm:text-lg text-xl hackernoon svelte-a0ut9w">abtest's Blog</span> <br> <span class="subtitle text-secondary svelte-a0ut9w">AB Test</span></div> </div></a></div> <div class="hidden md:block navbar-center"><ul class="menu menu-horizontal overflow-hidden text-txt"><li><a href="https://hackernoon.com/u/abtest">Read My Stories</a></li></ul></div> <div class="navbar-end"><a href="/about" class="hidden lg:inline-flex btn bg-base-100 btn-sm rounded-btn bg-secondary border-none mr-2">About AB Test</a> <div class="dropdown dropdown-end"><div><a class="hidden lg:inline-flex text-txt" href="/login" data-svelte-h="svelte-qn8vay">Login</a> <button class="lg:hidden navbar-burger flex items-center p-3" data-svelte-h="svelte-sf8jzs"><svg class="block h-4 w-4 fill-current" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><title>Mobile menu</title><path d="M0 3h20v2H0V3zm0 6h20v2H0V9zm0 6h20v2H0v-2z"></path></svg></button></div> <ul tabindex="-1" class="menu dropdown-content prose prose:invert mt-3 z-[1] p-2 shadow bg-base-100 rounded-box w-52"><li><a href="/about">About AB Test</a></li> <li><a href="/login" data-svelte-h="svelte-1vxwqu1">Login</a></li></ul></div></div></header> <main class="container flex flex-col flex-1" style="padding: 0px;"> <div class="grid grid-cols-1 gap-4 md:grid-cols-3"><a href="/why-safe-t-tests-outperform-classical-methods-in-large-scale-experiments" class="card bg-base-100 shadow-xl hover:bg-base-200"><figure class="h-1/2"><img src="https://hackernoon.imgix.net/images/5wpKgV75aONqkTJlafw2yQmK9yd2-cl038vf.png" alt="cover" class="h-full w-full object-cover"></figure> <div class="card-body"><h2 class="card-title line-clamp-3">Why Safe T-Tests Outperform Classical Methods in Large-Scale Experiments</h2> <p class="text-xs text-gray-500">12 Aug 2025</p> <p class="line-clamp-3">Safe testing offers faster, more reliable results than p-values for A/B tests. Discover how safe t-tests and E-variables are transforming analytics.</p></div> </a><a href="/what-162-vinted-ab-tests-reveal-about-your-conversion-metrics" class="card bg-base-100 shadow-xl hover:bg-base-200"><figure class="h-1/2"><img src="https://hackernoon.imgix.net/images/5wpKgV75aONqkTJlafw2yQmK9yd2-vm038qs.png" alt="cover" class="h-full w-full object-cover"></figure> <div class="card-body"><h2 class="card-title line-clamp-3">What 162 Vinted A/B Tests Reveal About Your Conversion Metrics</h2> <p class="text-xs text-gray-500">12 Aug 2025</p> <p class="line-clamp-3">Inside Vinted’s 162 A/B tests: Safe vs classica
Open service 104.21.83.121:80 · abtest.tech
2026-01-25 01:49
HTTP/1.1 308 Permanent Redirect
Date: Sun, 25 Jan 2026 01:49:28 GMT
Content-Type: text/plain
Transfer-Encoding: chunked
Connection: close
Location: https://abtest.tech/
Refresh: 0;url=https://abtest.tech/
server: cloudflare
cf-cache-status: DYNAMIC
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Server-Timing: cfCacheStatus;desc="DYNAMIC"
Server-Timing: cfEdge;dur=11,cfOrigin;dur=4
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=VC7YyhvpTDp8CPxaMHl5Nnr7ZDNyGBFgfXU1JnSjPeZ3S0Y3W3kRHiu57PKl438CwHFU87hR06%2BoLeg5BVgRXfQOuyrprosU0rAh"}]}
CF-RAY: 9c341d3d88cfd25a-FRA
alt-svc: h3=":443"; ma=86400
Redirecting...
Open service 2606:4700:3032::ac43:afd3:443 · abtest.tech
2026-01-25 01:49
HTTP/1.1 200 OK
Date: Sun, 25 Jan 2026 01:49:28 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close
Age: 0
Cache-Control: public, max-age=0, must-revalidate
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=RDEe%2Fm91JMGPgCZauF5SfSJHHFRaQ%2BwCw6HjrgT%2BpECpqmOUUgKFqo2vkmsSy%2Fuq%2FuwBepuizz7aQbezQQx6x8yaI96fgB8URvcGbXSLrUHL2Kel6Q%3D%3D"}]}
content-security-policy: script-src 'self' 'nonce-LTcY7nUL3eZXt9XE+GfFKg=='
content-security-policy-report-only: script-src 'self' 'nonce-LTcY7nUL3eZXt9XE+GfFKg=='; report-uri /
Server-Timing: cfCacheStatus;desc="DYNAMIC"
Server-Timing: cfEdge;dur=6,cfOrigin;dur=217
link: <./_app/immutable/assets/remixicon.DtqDn7Wb.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/iconfont.DwBaTteH.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/2.KaETSLq7.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/modal.pHYtDzW-.css>; rel="preload";as="style"; nopush, <./_app/immutable/assets/4.BxU_NgMJ.css>; rel="preload";as="style"; nopush, <./_app/immutable/entry/start.ItmoWeC1.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/Cu7SWove.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/DH2_B8fx.js>; rel="modulepreload"; nopush, <./_app/immutable/entry/app.DEemPfCx.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/jKjWACjA.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/IHki7fMi.js>; rel="modulepreload"; nopush, <./_app/immutable/nodes/0.DKP4hKzI.js>; rel="modulepreload"; nopush, <./_app/immutable/nodes/2.DMJaUXMj.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/D6rgpqA-.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/5SC1rdOt.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CPgdM8Fc.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CgU5AtxT.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/COI3SUi2.js>; rel="modulepreload"; nopush, <./_app/immutable/nodes/4.D9R06Fta.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/D0QH3NT1.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/Drj1NthL.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CqgDml68.js>; rel="modulepreload"; nopush, <./_app/immutable/chunks/CbKr1QjC.js>; rel="modulepreload"; nopush
Server: cloudflare
Set-Cookie: limiterid=o91C-vdSCiiuLVXAJ1Zm1%3B1404dd40e3b76677283fef76a21c504eda49cbf24a27f2c80e43c21a1668945e; Max-Age=604800; Path=/; HttpOnly; Secure; SameSite=Strict
strict-transport-security: max-age=63072000
x-sveltekit-page: true
x-vercel-cache: MISS
x-vercel-id: iad1::iad1::rnrh2-1769305768743-52ae7b2f9a07
cf-cache-status: DYNAMIC
vary: accept-encoding
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
CF-RAY: 9c341d3e596e9630-EWR
alt-svc: h3=":443"; ma=86400
Page title: AB Test's blogMobile menu
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" href="./favicon.png" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link href="./_app/immutable/assets/remixicon.DtqDn7Wb.css" rel="stylesheet">
<link href="./_app/immutable/assets/iconfont.DwBaTteH.css" rel="stylesheet">
<link href="./_app/immutable/assets/2.KaETSLq7.css" rel="stylesheet">
<link href="./_app/immutable/assets/modal.pHYtDzW-.css" rel="stylesheet">
<link href="./_app/immutable/assets/4.BxU_NgMJ.css" rel="stylesheet"><title>AB Test's blog</title><!-- HEAD_svelte-a47h6n_START --><!-- HEAD_svelte-a47h6n_END -->
</head>
<body data-sveltekit-preload-data="hover" class="flex flex-col min-h-screen">
<div style="display: contents"> <main class="flex flex-col flex-1 p-0"><header class="p-1 mb-6 navbar text-primary-content bg-primary svelte-1cl0lid"><div class="navbar-start"><a href="/" aria-label="home"><div class="name-container flex items-center svelte-a0ut9w"><img src="https://cdn.hackernoon.com/avatars/robot-a5.png" alt="avatar" class="svelte-a0ut9w"> <div class="website-name text-txt rm:text-lg text-xl hackernoon svelte-a0ut9w">abtest</div> <div class="website-details svelte-a0ut9w"><span class="title text-txt sm:text-lg text-xl hackernoon svelte-a0ut9w">abtest's Blog</span> <br> <span class="subtitle text-secondary svelte-a0ut9w">AB Test</span></div> <div class="opacity-0 text-txt rm:text-lg text-xl hackernoon svelte-a0ut9w">abtest</div> <div class="opacity-0"><span class="title text-txt sm:text-lg text-xl hackernoon svelte-a0ut9w">abtest's Blog</span> <br> <span class="subtitle text-secondary svelte-a0ut9w">AB Test</span></div> </div></a></div> <div class="hidden md:block navbar-center"><ul class="menu menu-horizontal overflow-hidden text-txt"><li><a href="https://hackernoon.com/u/abtest">Read My Stories</a></li></ul></div> <div class="navbar-end"><a href="/about" class="hidden lg:inline-flex btn bg-base-100 btn-sm rounded-btn bg-secondary border-none mr-2">About AB Test</a> <div class="dropdown dropdown-end"><div><a class="hidden lg:inline-flex text-txt" href="/login" data-svelte-h="svelte-qn8vay">Login</a> <button class="lg:hidden navbar-burger flex items-center p-3" data-svelte-h="svelte-sf8jzs"><svg class="block h-4 w-4 fill-current" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><title>Mobile menu</title><path d="M0 3h20v2H0V3zm0 6h20v2H0V9zm0 6h20v2H0v-2z"></path></svg></button></div> <ul tabindex="-1" class="menu dropdown-content prose prose:invert mt-3 z-[1] p-2 shadow bg-base-100 rounded-box w-52"><li><a href="/about">About AB Test</a></li> <li><a href="/login" data-svelte-h="svelte-1vxwqu1">Login</a></li></ul></div></div></header> <main class="container flex flex-col flex-1" style="padding: 0px;"> <div class="grid grid-cols-1 gap-4 md:grid-cols-3"><a href="/why-safe-t-tests-outperform-classical-methods-in-large-scale-experiments" class="card bg-base-100 shadow-xl hover:bg-base-200"><figure class="h-1/2"><img src="https://hackernoon.imgix.net/images/5wpKgV75aONqkTJlafw2yQmK9yd2-cl038vf.png" alt="cover" class="h-full w-full object-cover"></figure> <div class="card-body"><h2 class="card-title line-clamp-3">Why Safe T-Tests Outperform Classical Methods in Large-Scale Experiments</h2> <p class="text-xs text-gray-500">12 Aug 2025</p> <p class="line-clamp-3">Safe testing offers faster, more reliable results than p-values for A/B tests. Discover how safe t-tests and E-variables are transforming analytics.</p></div> </a><a href="/what-162-vinted-ab-tests-reveal-about-your-conversion-metrics" class="card bg-base-100 shadow-xl hover:bg-base-200"><figure class="h-1/2"><img src="https://hackernoon.imgix.net/images/5wpKgV75aONqkTJlafw2yQmK9yd2-vm038qs.png" alt="cover" class="h-full w-full object-cover"></figure> <div class="card-body"><h2 class="card-title line-clamp-3">What 162 Vinted A/B Tests Reveal About Your Conversion Metrics</h2> <p class="text-xs text-gray-500">12 Aug 2025</p> <p class="line-clamp-3">Inside Vinted’s 162 A/B tests: Safe vs classica
Open service 2606:4700:3032::ac43:afd3:80 · abtest.tech
2026-01-25 01:49
HTTP/1.1 308 Permanent Redirect
Date: Sun, 25 Jan 2026 01:49:28 GMT
Content-Type: text/plain
Transfer-Encoding: chunked
Connection: close
Location: https://abtest.tech/
Refresh: 0;url=https://abtest.tech/
server: cloudflare
cf-cache-status: DYNAMIC
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Server-Timing: cfCacheStatus;desc="DYNAMIC"
Server-Timing: cfEdge;dur=11,cfOrigin;dur=17
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=qzQOfbs%2F10o171KFF82UWu4g%2B9ysnkK4SoHXbHRQkHtnB%2BHYvZdbbpuculpFP6UfOT0xLRQlUmuPIyJCDZ3ZxgoPsnnyXL5YiJ3KsCNhBsTBPrFYkomh"}]}
CF-RAY: 9c341d3d1ad38153-EWR
alt-svc: h3=":443"; ma=86400
Redirecting...
Open service 172.67.175.211:8443 · abtest.tech
2026-01-25 01:49
HTTP/1.1 522 <none> Date: Sun, 25 Jan 2026 01:49:48 GMT Content-Type: text/plain; charset=UTF-8 Content-Length: 15 Connection: close Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Expires: Thu, 01 Jan 1970 00:00:01 GMT Referrer-Policy: same-origin Server-Timing: cfEdge;dur=19314,cfOrigin;dur=0 X-Frame-Options: SAMEORIGIN Server: cloudflare CF-RAY: 9c341d4329354c7c-SJC alt-svc: h3=":8443"; ma=86400 error code: 522
Open service 104.21.83.121:8443 · abtest.tech
2026-01-25 01:49
HTTP/1.1 522 <none> Date: Sun, 25 Jan 2026 01:49:48 GMT Content-Type: text/plain; charset=UTF-8 Content-Length: 15 Connection: close Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Expires: Thu, 01 Jan 1970 00:00:01 GMT Referrer-Policy: same-origin Server-Timing: cfEdge;dur=19348,cfOrigin;dur=0 X-Frame-Options: SAMEORIGIN Server: cloudflare CF-RAY: 9c341d431c903f3b-EWR alt-svc: h3=":8443"; ma=86400 error code: 522
Open service 2606:4700:3032::ac43:afd3:8443 · abtest.tech
2026-01-25 01:49
HTTP/1.1 522 <none> Date: Sun, 25 Jan 2026 01:49:48 GMT Content-Type: text/plain; charset=UTF-8 Content-Length: 15 Connection: close Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Expires: Thu, 01 Jan 1970 00:00:01 GMT Referrer-Policy: same-origin Server-Timing: cfEdge;dur=19290,cfOrigin;dur=0 X-Frame-Options: SAMEORIGIN Server: cloudflare CF-RAY: 9c341d431a9e423f-EWR alt-svc: h3=":8443"; ma=86400 error code: 522