How do I limit cache disk usage?

[acejam]

Hello,

i'd like to use Souin with Caddy and leverage one of the disk-based storage adapters - such as Badger or NutsDB.

In an effort to prevent "out of disk" system errors, how can I limit the amount of disk space that can be used by the cache?

[darkweak]

Hey @acejam I think that's not possible ATM with these storages. Maybe we could implement the directory size in the simplefs storage https://github.com/darkweak/storages.

[acejam]

Hey @acejam I think that's not possible ATM with these storages. Maybe we could implement the directory size in the simplefs storage https://github.com/darkweak/storages.

Thanks for the idea. Is the size parameter not used for this already? https://github.com/darkweak/storages/blob/main/simplefs/simplefs.go#L73

[darkweak]

The size is about the number of objects to store but it doesn't limit the filesystem size.

[acejam]

Hi @darkweak - it looks like this PR that you're working on might help? darkweak/storages#20

I would be interested in testing this.

[darkweak]

Hey @acejam you should be able to use it using

{
    cache {
        ttl 86400s
        simplefs {
            path /somewhere/files/path
            directory_size 1MB # to limit to 1 megabyte
        }
    }
}

xcaddy build .... --with github.com/darkweak/storages/simplefs/caddy@08ca1166d784ef00cc8909f65ce5b9feda12f0e2 --with github.com/darkweak/storages/simplefs@08ca1166d784ef00cc8909f65ce5b9feda12f0e2

[jackalcooper]

Hey @acejam you should be able to use it using

{
    cache {
        ttl 86400s
        simplefs {
            path /somewhere/files/path
            directory_size 1MB # to limit to 1 megabyte
        }
    }
}

xcaddy build .... --with github.com/darkweak/storages/simplefs/caddy@08ca1166d784ef00cc8909f65ce5b9feda12f0e2 --with github.com/darkweak/storages/simplefs@08ca1166d784ef00cc8909f65ce5b9feda12f0e2

I'd like to test the latest simplefs but couldn't get a version of caddy recognizes the directory_size directive. Here is my xcaddy command:

xcaddy build --with github.com/caddyserver/replace-response \
  --with github.com/darkweak/souin/plugins/caddy \
  --with github.com/darkweak/storages/simplefs/caddy@0bf47f3c81001be1c940558e22cff9059c7ddd1f \
  --with github.com/darkweak/storages/simplefs@0bf47f3c81001be1c940558e22cff9059c7ddd1f

and the list-modules --versions output

cache v1.7.5
http.handlers.cache v1.7.5
http.handlers.replace_response v0.0.0-20241211194404-3865845790a7
storages.cache.simplefs v0.0.12-0.20241224133404-0bf47f3c8100

  Non-standard modules: 4