memory datastore config setting would be nice

[whyrusleeping]

We used to be able to specify in the config to use an 'in memory' datastore. This would be nice to have again for testing various things.

[jbenet]

👍

[whyrusleeping]

I have some basic code for this here: https://github.com/ipfs/go-ipfs/tree/feat/config-ds

But its probably best to wait on the s3 datastore changes.

[Stebalien]

We now have support for custom datastore configs and plugins. This should now be pretty trivial to implement if anyone wants to pick it up. You may find the following example useful: https://github.com/ipfs/go-ipfs-example-plugin/

[cfdair]

I'll have a crack.

[Stebalien]

Actually, it looks like we support this without any additional plugins. We just need to create a config profile for the "mem" datastore: https://github.com/ipfs/go-ipfs-config/blob/master/profile.go.

[magik6k]

Note that using memory datastore may break between restarts in weird ways:

• if used for entire datastore, it probably won't even start because of missing pinroot/filesroot
• if only used for blocks, pinning will not be happy. MFS may also break

(this should be fixable, but we have to be careful when fixing pinning)

[ef3n9r98]

Hey! Did someone end up fixing this issue? And if not, would you be willing to compensate a dev for fixing it (even if it's small)?

[Jorropo]

There is support here:

kubo/repo/fsrepo/datastores.go

Line 61 in afa891b

"mem": MemDatastoreConfig,

I'll close this given I don't see anything left to do, can reopen if I missed something obviously.