How to flush bitcoind cache?

How to flush bitcoind cache?

I have been working with a bitcoin full node trying to implement a personal blockchain explorer using RPC API calls to populate an external database.

After trying to gather some statistics on RPC call speeds I noticed that there seems to be some form of caching. Not sure if this is cached on the daemon side or with the levelDB.

My goal is to compare a getRawTransaction call for each transaction vs a batch getRawTransaction call, however caching makes it quite difficult to gather stats.

Is there anyway to flush cache with bitcoind?

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