datomic-backup

Efficiently clone Datomic databases for testing and development.

Installation

;; deps.edn
{:deps {dev.kwill/datomic-backup {:mvn/version "1.0.6"}}}

Usage

current-state-restore

Restores the current state (no history) from a source database to a destination connection. This is significantly faster than replaying transactions.

(require
  '[datomic.client.api :as d]
  '[dev.kwill.datomic-backup :as datomic-backup])

(def source-db (d/db source-conn))
(def dest-conn (d/connect client {:db-name "destination"}))

(datomic-backup/current-state-restore
  {:source-db source-db
   :dest-conn dest-conn})

Options

• :source-db - Source database value (required)
• :dest-conn - Destination connection (required)
• :max-batch-size - Datoms per transaction (default: 500)
• :read-parallelism - Parallel attribute reads (default: 20)
• :read-chunk - Datoms per read chunk (default: 5000)
• :tx-parallelism - Parallelism for transaction worker (default: 4)
• :debug - Enable debug logging (default: false)

Other functions

The library also includes backup-db and backup-db-no-history functions for file-based backups, but these are still experimental.

License

MIT