During the early access period, all users are limited to 1 GB of storage and up to 1000 key-value pairs per Namespace. These limitations will be relaxed when we enter general availability.

Workers KV supports:

  • Up to 20 Namespaces per account
  • Up to 1 billion keys per Namespace
  • Keys of up to 2 kB
  • Values of up to 64 kB
  • Unlimited (100k+) reads per second per key
  • Up to one write per second per key

If your application requires higher limits, please reach out.

Workers KV performance is determined by the amount of read-volume a given Namespace and key receives. Maximum performance is not reached until a key is being read on the order of once-per-second in any given data center.