Lordworms commented on issue #9964:
URL: 
https://github.com/apache/arrow-datafusion/issues/9964#issuecomment-2062774430

   > @Lordworms thanks for the work on this.
   > 
   > Just to confirm - what was the improvement in milliseconds we saw from the 
object meta cache? For context, in low latency use cases (we have that 
requirement) even shaving off a few ms can be important so would still want to 
get that improvement in.
   > 
   > IMO it would be good to close the object meta cache topic first before 
moving on to file cache - unless there is some connection there that I am 
missing where we need to consider them together.
   
   Sure, from left to right: unchanged, SequenceTrie cached, ThreadSafeLRU 
DashMap cached
   
![c55455d0e3b0fd70096706ad692cc162](https://github.com/apache/arrow-datafusion/assets/48054792/e4134a61-10bb-4c46-900a-f6e76bbeceda)
   


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