Roadrunner cache occupies 1GB of RAM after de-serialization

[betalb]

Do you want to request a feature or report a bug? Bug

What is the current behavior?
Roadrunner cache is cleared only after yarn update

There is no restriction where yarn should be installed, even though officially recommended way is to install through package manager. We are using yarn on ci. It is installed into build directory which is always new and has uniq name, so roadrunner cache becomes append-only and get's increased in size after every run.

What is the expected behavior?
There should be a way to disable roardunner cache or stale data should be removed from cache.

• cache should be scoped to yarn.js location: if cached resolutions are for yarn installed in different directory - reset. This is not ideal due to race conditions
• or there should be a possibility to disable any writes, caches, stored in home directory

[Daniel15]

We're going to remove the usage of Roadrunner as part of #3030