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While D1 is in Alpha, there are some limits to be aware of prior to begin testing.

  • Database size: You can have a max database size of 100 MB. There are no limitations on rows and columns as long as your database falls within the size limitation.
  • Databases per account: Create up to 10 D1 databases on a single account. If you need more, reach out to the team.
  • Backups: Backups run every hour automatically. Backups will block access to the DB while they are running. In most cases this should only be a second or two, and any requests that arrive during the backup will be queued.