Ben Brandt (Sep 25 2024 at 09:14): Ben Brandt (Sep 25 2024 at 09:14):Hi! Just a quick question: Is it fine to cache an InstancePre over multiple invocations, potentially being invoked by different users?
Since this is pre passing in the store, I assume it just allows us to cache the compilation/linking step, but if there are any caveats or things to be aware of why I wouldn't want to do this, I'd appreciate it. Thanks!
bjorn3 (Sep 25 2024 at 10:20):Yes, that is it't intended use case.
bjorn3 (Sep 25 2024 at 10:20):Since this is pre passing in the store
According to the docs:
Note that an
InstancePremay not be tied to any particularStoreif none of the imports it closed over are tied to any particularStore.
Ben Brandt (Sep 25 2024 at 10:37):Perfect thanks! If there is any code that happens at initialization, would this still happen then once it is actually turned into an Instance? Again, I assume so, but don't want to be making any false assumptions. Thanks again for the quick response
fitzgen (he/him) (Sep 25 2024 at 14:00):InstancePre doesn't run or cache the results of any wasm code; it mostly just early-binds imports and massages a few data structures, so that we don't have to do things like string-based import look ups at instantiation time
Ben Brandt (Sep 25 2024 at 14:23):Perfect, thanks!
Last updated: Dec 06 2025 at 06:05 UTC