Automated PostgreSQL Backups with NodeJS and Bash

Automated PostgreSQL Backups with NodeJS and Bash

Automated PostgreSQL Backups with NodeJS and Bash. Postgres ships with two handy utilities that help us easily backup and restore our databases – pg_dump and pg_restore. If you need to restore and sort the data, Postgres provides the pg_restore utility. You’ll probably need to do a bit of work if you want to transfer a Postgres database backup to a new OracleDB database, but backing up and restoring on any SQL platform should work just as well.

The database is the holy grail of your application, but, given the unpredictable nature of software, you should always be prepared for the possibility of media, hardware and software failures. If any of these failures occurs, the main objective should be to ensure the database is back up and running as fast as possible while minimizing user disruption and simultaneously ensuring there is no data loss.

The best way to achieve this is to have a detailed backup-and-restore procedure documented in case anything goes wrong with the production database. Sprinkle a bit of automation so the process takes care of itself and you will have saved yourself from some frustrating future headaches.

It’s entirely possible to accomplish this with bash alone, but bash scripting can get complicated and boring pretty fast – the syntax is unintuitive and it’s not the most beginner-friendly language out there, especially for people more used to modern languages like Node. Our philosophy is to reserve those bash muscles for when we really need them.

Backing up a postgres database

Postgres ships with two handy utilities that help us easily backup and restore our databases – pg_dump and pg_restore.

pg_dump is an in-built way of making consistent database backups backups (also referred to as ‘dumps’) in a number of different formats and across different platforms. It also provides a schema-only feature for people looking to preserve their database schemas and not the data.

If you need to restore and sort the data, Postgres provides the pg_restore utility. Internally, it uses sql commands such as DROP DATABASE and CREATE DATABASE bypassing normal restrictions present when using commands such as dropdb. In order to use pg_restore, however, your database output format should not be a plain text file.

Of note should be the fact that pg_dump and pg_restore were created to be as platform-agnostic as possible. You’ll probably need to do a bit of work if you want to transfer a Postgres database backup to a new OracleDB database, but backing up and restoring on any SQL platform should work just as well.

postgresql database node bash developer

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