[Workers] Add MongoDB integration docs

[MattieTK]

Summary

Adds documentation for connecting Cloudflare Workers to MongoDB using the native Node.js driver (mongodb >= 6.15.0) and Mongoose. We occasionally get requests in discord for information on how to do this since we don't support these drivers in Hyperdrive, and setting up database connections on a request-basis is inefficient.

Three changes:

1. New integration page at /workers/databases/third-party-integrations/mongodb/ – covers both a direct connection (simple, ~300ms overhead per request) and a Durable Object approach (recommended, persists connections for ~35ms warm queries). Also documents the Mongoose package.json exports patch required for workerd compatibility.

2. Table row added to /workers/databases/connecting-to-databases/ under the serverless databases section, listing MongoDB with the mongodb/mongoose drivers and TCP Socket as the connection method.

3. New tutorial at /workers/tutorials/connect-to-mongodb-atlas/ – a step-by-step guide that creates a Worker, connects to MongoDB, queries a sample collection, then upgrades to a Durable Object for lower latency.

Relevant upstream context:

• cloudflare/workerd#3315 – added node:net
• cloudflare/workerd#3594 – added node:tls TLSSocket
• Automattic/mongoose#14613 – Mongoose exports map issue

Documentation checklist

• Is there a changelog entry (guidelines)? If you don't add one for something awesome and new (however small) — how will our customers find out? Changelogs are automatically posted to RSS feeds, the Discord, and X.
• The change adheres to the documentation style guide.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.

[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/src/content/docs/workers/	@cloudflare/workers-docs, @GregBrimble, @irvinebroque, @mikenomitch, @korinne, @WalshyDev, @cloudflare/deploy-config, @cloudflare/product-owners, @cloudflare/wrangler, @MattieTK, @cloudflare/dev-plat-leads, @vy-ton

[ask-bonk]

3 issues need fixing before merge.

HIGH — Workers TypeScript examples must use TypeScriptExample (not bare ts/typescript fences). I suggested the most prominent blocks; please apply the same wrapper to any remaining examples on both pages.

HIGH — WranglerConfig blocks must use TOML input and $today for compatibility_date instead of JSONC/hardcoded dates.

MEDIUM — The tutorial output block should use txt output rather than sh output.

[ask-bonk]

Review posted on PR #31382.

Labels applied: product:workers, content:new, documentation.

Summary of findings:

Severity	Issue	Location
HIGH	Workers TypeScript examples use bare ts/typescript fences instead of the required TypeScriptExample component.	mongodb.mdx (3 blocks), tutorial (3 blocks)
HIGH	WranglerConfig blocks use JSONC input and hardcoded compatibility_date instead of TOML + $today.	mongodb.mdx, tutorial
MEDIUM	Command output block uses sh output instead of txt output.	Tutorial step 4

I posted 11 inline suggestions covering the import additions, representative TypeScriptExample wrappers, both WranglerConfig conversions, and the output language fix. The author should apply the same TypeScriptExample wrapper to any smaller typescript snippets I didn't individually flag (e.g., the step 5 import snippets in the tutorial).

No pre-existing issues in unchanged files were flagged. The content is technically accurate and the structure is solid once the component/style-guide violations are resolved.

github run

[github-actions]

Preview URL: https://102e695c.preview.developers.cloudflare.com
Preview Branch URL: https://feat-mongodb-docs.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/workers/tutorials/connect-to-mongodb-atlas/	https://feat-mongodb-docs.preview.developers.cloudflare.com/workers/tutorials/connect-to-mongodb-atlas/
https://developers.cloudflare.com/workers/databases/third-party-integrations/mongodb/	https://feat-mongodb-docs.preview.developers.cloudflare.com/workers/databases/third-party-integrations/mongodb/
https://developers.cloudflare.com/workers/databases/connecting-to-databases/	https://feat-mongodb-docs.preview.developers.cloudflare.com/workers/databases/connecting-to-databases/