[mysql] increase and monitor poolsize

[svenefftinge]

Description

Increases the connection limit for MySQL to 40 (from 20) per instance. Also adds pool observation in server components.

Summary generated by Copilot

🤖 Generated by Copilot at d903fd3

Increased MySQL connection pool size in components/gitpod-db/src/typeorm/typeorm.ts. This improves database performance and scalability for Gitpod.

Related Issue(s)

Fixes EXP-392

How to test

Documentation

Preview status

Gitpod was successfully deployed to your preview environment.

• 🏷️ Name - something
• 🔗 URL - something.preview.gitpod-dev.com/workspaces.
• 📚 Documentation - See our internal documentation for information on how to interact with your preview environment.
• 📦 Version - something-gha.14896

Build Options

Build

• /werft with-werft
  Run the build with werft instead of GHA
• leeway-no-cache
• /werft no-test
  Run Leeway with --dont-test

Publish

• /werft publish-to-npm
• /werft publish-to-jb-marketplace

Installer

• analytics=segment
• with-dedicated-emulation
• workspace-feature-flags
  Add desired feature flags to the end of the line above, space separated

Preview Environment / Integration Tests

• /werft with-local-preview
  If enabled this will build install/preview
• /werft with-preview
• /werft with-large-vm
• /werft with-gce-vm
  If enabled this will create the environment on GCE infra
• with-integration-tests=all
  Valid options are all, workspace, webapp, ide, jetbrains, vscode, ssh. If enabled, with-preview and with-large-vm will be enabled.
• with-monitoring

/hold

[akosyakov]

works as advertized

we could add also gitpod_typeorm_max_connections equal value of connection limit, that we can use it in alerts, but we can hardcode it as well there

[svenefftinge]

/unhold