The source code for this utility is here https://github.com/glynnbird/kvbackup

A simple command-line utility and library to backup and restore KV metadata and values from Cloudflare’s KV service.

• kvbackup - It fetches all the keys in batches of 1000, then fetches each key’s value/metadata in batches of 100.
• kvrestore - writes key/value/metadata back to KV in batches of 100.

Installation

Install using npm or your favourite package manager:

npm install -g kvbackup

Performing a backup

Set some environment variables:

# some environment variables with the auth token and Cloudflare account id
# to work with. We can pass CLOUDFLARE_NAMESPACE_ID here too, but we can
# mix and match environment variables with CLI params
export CLOUDFLARE_AUTH_TOKEN="MY_TOKEN"
export CLOUDFLARE_ACCOUNT_ID="MY_ACCOUNT_ID"

Then run a backup for a single KV namespace:

# backup this namespace to a file
kvbackup --namespace abc123 > mybackup.jsonl

Restore

Restore is the opposite: pipe your backed-up file into kvrestore:

cat mybackup.jsonl | kvrestore --namespace def456

Format of the backup file

One line per KV entry, each line containing a key, the metadata object an the value string:

{"key":"mykey1","metadata":{"x":1},"value":"{\"y\":42}"}
{"key":"mykey2","metadata":{"x":2},"value":"{\"y\":43}"}

Environment variables (and CLI parameters):

• CLOUDFLARE_AUTH_TOKEN (--token/-t) - set up an auth token in https://dash.cloudflare.com/profile/api-tokens. It must have permissions to “edit KV Workers Storage”.
• CLOUDFLARE_ACCOUNT_ID (--account/-a) - the id of the Cloudflare account we are working with. This can be found in your browser’s URL bar when visiting: https://dash.cloudflare.com
• CLOUDFLARE_NAMESPACE_ID (--namespace/-n) - the id of the KV Namespace to backup or restore.

Using programmatically

backup

import { backup } from 'kvbackup'

const opts = {
  namespace: 'mynamespace',
  account: 'abc123',
  token: 'xyz',
  ws: creatWriteStream('./mybackup.jsonl'),
}
await backup(opts)

restore

import { restore } from 'kvbackup'

const opts = {
  rs: creatReadStream('./mybackup.jsonl', { encoding: 'utf8' }),
  namespace: 'mynamespace',
  account: 'abc123',
  token: 'xyz'
}
await restore(opts)