WAL-G

What WAL-G is

WAL-G is a free, open-source tool for archiving and restoring databases in cloud environments. Its listed targets include PostgreSQL, MySQL, MariaDB, SQL Server, MongoDB, Redis, Greenplum, Cloudberry, FoundationDB, and ETCD; the README marks MongoDB and Redis as beta. It supports continuous backups and point-in-time recovery, with PostgreSQL non-exclusive base backups. Operators can configure backup storage and use a storage tools command to interact with it. Configuration is available through environment variables or a config file in JSON, YAML, or envfile format. Compression options include LZ4, LZMA, ZSTD, and Brotli, and the tool uses multiple processors. Encryption can use libsodium, OpenPGP, or Yandex Cloud KMS, but it is disabled by default; envelope PGP key configuration currently supports only Yandex Cloud Key Management Service. Metrics can be published to statsd or statsd_exporter over UDP on a best-effort basis. The project provides Linux and macOS installation instructions and describes Windows builds in its development section. WAL-G is licensed under Apache License 2.0, while LZO support uses GPL 3.0+.