about Ghost blog

Ghost is structured as a modern, decoupled web application with a sensible service-based architecture. For heroku, "JawsDB MySQL" is default database when deploy with one button github. However, the storage capacity of free plan Kitefin Shared is only 5M! 容量大小限制! For the current of ghost version, such small database size must be the problem of such error.

A serious editor

Ghost has the rich editor which every writer wants, but under the hood it delivers far more power than you would expect. All content is stored in a standardised JSON-based document storage format called MobileDoc, which includes support for extensible rich media objects called Cards.

In simple terms you can think of it like having Slack integrations inside Medium's editor, stored sanely and fully accessible via API.

Excluded mobiledoc_revisions table from exports merged 12 Aug 2019

no issue

• the mobiledoc_revisions table can grow very large in certain circumstances which can result in Out-Of-Memory errors when performing backups, resulting in failed upgrades
• adds mobiledoc_revisions to the exporter excluded tables list as a temporary solution until we have safer export creation and/or improved revision handling

Solution

1. using HeidiSQL to empty every data in the overloaded table of mobiledoc_revisions.
2. To keep site stable, try to use Markdown only native app to edit your site.

Reffence

https://forum.ghost.org/t/unable-to-access-admin-ui-unknown-error/15480/2