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Hi, is there a First In First Out collection in Kotlin which we can set a limited size ?

Have you looked into buffered `Channel`s? Not exactly a collection but it could be better. Otherwise you could try something like this but with an array implementation

Queue is a good option (since there is no requirement for thread blocking in your question):
<https://docs.oracle.com/javase/tutorial/collections/implementations/queue.html>

I found out about `ArrayDeque` in the documentation, maybe it's what I need ? It's for storing little data classes with 100 maximum items to keep RAM consuption small

ArrayDeque is definitely what I’d use instead of the older Queue or LinkedList classes to implement this, but I don’t think there are any stdlib data structures with a capacity-based eviction policy built in