CODEWITHSUNDEEP
iosswiftcore-data
Ivan Cantarino
Ivan Cantarino

Reputation: 3246

App keeps increasing size after deleting data

I'm using CoreData as my local app storage manager.

Sometimes I save BLOB files (images, videos, etc) and I notice that the app size increases, which is expected.

My problem appears when I delete some data, but the app size doesn't change.

I've downloaded the app's container and noticed that the appname.sqlite and appname.sqlite-wal are still large.

Does anyone know why this is happening?

Note: I'm using CoreData with CloudKit with NSPersistentCloudKitContainer if that can help.

Upvotes: 0

Views: 285

Answers (1)

Lou Franco
Lou Franco

Reputation: 89152

Under CoreData is a sqlite database. Sqlite's vacuum command documentation explains what is happening

https://www.sqlite.org/lang_vacuum.html

When content is deleted from an SQLite database, the content is not usually erased but rather the space used to hold the content is marked as being available for reuse.

You could try to connect to the underlying sqlite database and use vacuum directly on it.

How to VACUUM a Core Data SQLite db?

But, in your case, I'd follow @matt's suggestion of not using BLOBs this way.

Upvotes: 2

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