feat: Document OTLP drains for cloudflare and heroku

[AbhiPrasad]

DESCRIBE YOUR PR

This documents trace/log drains via OTLP for both cloudflare and heroku.

Cloudflare docs maps to https://developers.cloudflare.com/workers/observability/exporting-opentelemetry-data/, while the Heroku docs maps to https://devcenter.heroku.com/articles/heroku-telemetry.

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• None: Not urgent, can wait up to 1 week+

SLA

• Teamwork makes the dream work, so please add a reviewer to your PRs.
• Please give the docs team up to 1 week to review your PR unless you've added an urgent due date to it.
  Thanks in advance for your help!

PRE-MERGE CHECKLIST

Make sure you've checked the following before merging your changes:

• Checked Vercel preview for correctness, including links
• PR was reviewed and approved by any necessary SMEs (subject matter experts)
• PR was reviewed and approved by a member of the Sentry docs team

LEGAL BOILERPLATE

Look, I get it. The entity doing business as "Sentry" was incorporated in the State of Delaware in 2015 as Functional Software, Inc. and is gonna need some rights from me in order to utilize my contributions in this here PR. So here's the deal: I retain all rights, title and interest in and to my contributions, and by keeping this boilerplate intact I confirm that Sentry can use, modify, copy, and redistribute my contributions, under Sentry's choice of terms.

EXTRA RESOURCES

• Sentry Docs contributor guide

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
develop-docs	Ready	Preview	Comment	Oct 30, 2025 4:39pm
sentry-docs	Ready	Preview	Comment	Oct 30, 2025 4:39pm

[codecov]

Bundle Report

Changes will increase total bundle size by 884.44kB (3.99%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
sentry-docs-client-array-push	10.16MB	-44 bytes (-0.0%) ⬇️
sentry-docs-server-cjs	12.47MB	884.48kB (7.63%) ⬆️

Affected Assets, Files, and Routes:

view changes for bundle: sentry-docs-server-cjs

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
1729.js	-3 bytes	1.74MB	-0.0%
../instrumentation.js	-3 bytes	1.07MB	-0.0%
9523.js	-3 bytes	1.04MB	-0.0%
../app/[[...path]]/page.js.nft.json	294.79kB	724.0kB	68.68% ⚠️
../app/platform-redirect/page.js.nft.json	294.79kB	723.91kB	68.7% ⚠️
../app/sitemap.xml/route.js.nft.json	294.79kB	721.14kB	69.14% ⚠️
4873.js	128 bytes	91.66kB	0.14%

Files in 4873.js:

• ./src/components/codeContext.tsx → Total Size: 2.47kB

• ./src/components/codeContext.tsx → Total Size: 9.58kB

view changes for bundle: sentry-docs-client-array-push

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
static/chunks/pages/_app-*.js	-3 bytes	882.71kB	-0.0%
static/chunks/8321-*.js	-3 bytes	425.87kB	-0.0%
static/chunks/4145-*.js	-38 bytes	50.95kB	-0.07%
server/middleware-*.js	-6.46kB	1.0kB	-86.59%
server/middleware-*.js	6.46kB	7.46kB	645.5% ⚠️
static/V4C46XJmWm0cVba1dyLyC/_buildManifest.js (New)	684 bytes	684 bytes	100.0% 🚀
static/V4C46XJmWm0cVba1dyLyC/_ssgManifest.js (New)	77 bytes	77 bytes	100.0% 🚀
static/NFUvfv-*.js (Deleted)	-77 bytes	0 bytes	-100.0% 🗑️
static/NFUvfv-*.js (Deleted)	-684 bytes	0 bytes	-100.0% 🗑️

Files in static/chunks/4145-*.js:

• ./src/components/codeContext.tsx → Total Size: 10.34kB