[Hyperdrive] Configurable connection count

[thomasgauvin]

need wrangler & frontend merge

[hyperlint-ai]

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PR Change Summary

Introduced configurable connection count for Hyperdrive, enhancing database connection management.

• Added documentation for connection pooling in Hyperdrive.
• Provided configuration instructions using Wrangler CLI and Cloudflare dashboard.
• Outlined best practices for managing connection counts.

Added Files

• src/content/docs/hyperdrive/configuration/connection-pooling.mdx

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[github-actions]

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

Pattern	Owners
/src/content/changelog/	@cloudflare/pm-changelogs, @cloudflare/pcx-cloudflare-one
/src/content/docs/hyperdrive/	@elithrar, @thomasgauvin, @sejoker, @oxyjun, @cloudflare/pcx-technical-writing
/src/content/release-notes/hyperdrive.yaml	@elithrar, @thomasgauvin, @sejoker, @oxyjun, @cloudflare/pcx-technical-writing

[github-actions]

Preview URL: https://263bbe75.preview.developers.cloudflare.com
Preview Branch URL: https://thomasgauvin-hyperdrive-configurable-connection-count.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/hyperdrive/configuration/connection-pooling/	https://thomasgauvin-hyperdrive-configurable-connection-count.preview.developers.cloudflare.com/hyperdrive/configuration/connection-pooling/
https://developers.cloudflare.com/changelog/2025-07-02-hyperdrive-configurable-connection-count/	https://thomasgauvin-hyperdrive-configurable-connection-count.preview.developers.cloudflare.com/changelog/2025-07-02-hyperdrive-configurable-connection-count/