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My scripts take 3 seconds to compile and 50ms to execute, so I definitely need a way to cache that..

```Compiled gameplay_effects.udea.kts in 2972ms
Evaluated gameplay_effects.udea.kts in 92ms
[GameAssetLoader] Loaded asset: /ability/gameplay_effects.udea.kts
Compiled npc_melee.udea.kts in 362ms
Evaluated npc_melee.udea.kts in 54ms
[GameAssetLoader] Loaded asset: /ability/npc_melee.udea.kts
Compiled soldier_abilities.udea.kts in 222ms
Evaluated soldier_abilities.udea.kts in 29ms
[GameAssetLoader] Loaded asset: /ability/soldier_abilities.udea.kts
Compiled arrow.udea.kts in 496ms
Evaluated arrow.udea.kts in 31ms
[GameAssetLoader] Loaded asset: /blueprint/arrow.udea.kts
Compiled orc.udea.kts in 404ms
Evaluated orc.udea.kts in 57ms```

<@U054SPAMYG2> <@U0CHHN4F4> Is this possible?

You can check caching mechanisms, e.g., <https://github.com/Kotlin/kotlin-script-examples/blob/852c8358ebc7c702aceaa3ec7fa21a105f0fb245/jvm/simple-main-kts/simple-main-kts/src/main/kotlin/org/jetbrains/kotlin/script/examples/simpleMainKts/scriptDef.kt#L85|code> + <https://github.com/Kotlin/kotlin-script-examples/blob/8fc2fc00a75ba0bac54ca5f5b8192f212ee0e4a6/jvm/simple-main-kts/simple-main-kts-test/src/test/kotlin/org/jetbrains/kotlin/script/examples/simpleMainKts/test/SimpleMainKtsTest.kt#L100|test>

Perfect ! my game load time went from 10 seconds to under 1 second

<@U0CHHN4F4> What do you do when a compiled script is no longer compatible with the main programs binary?

The source is compatible, but I changed the source codes now I get `java.lang.NoSuchMethodError`

The example caching is very primitive; it uses `compiledScriptUniqueName` to calculate a unique name based on the script content.
If you want something more advanced, you can implement `CompiledJvmScriptsCache` yourself.
The basic implementation is <https://github.com/JetBrains/kotlin/blob/master/libraries/scripting/jvm-host/src/kotlin/script/experimental/jvmhost/CompiledScriptJarsCache.kt|here>

I don't know if modifying that would do it because I'd need to essentially evaluate the compiled script to know if it needed recompiling

An easy way would be to invalidate the cache by deleting the `cacheBaseDir`, or have some more clever way to handle it via the custom "script to cache file" conversion.

If it doesn't work either, you probably need some custom host code.