Index should fit in RAM or in cache?

Hi to all,

the documentation is not very clear if index should fit in WiredTiger cache or in RAM?


Hello @Alaskent19,

Here are some related links from documentation:

Hello @Prasad_Saya,

but I don’t understand if the documentation refers to the total RAM or only to the WiredTiger RAM.
I have a machine with 8GB of RAM … how much RAM should I consider for index and working set?


I think the RAM / memory refers to the total physical RAM available on the server (or specific node).

Also, see these articles: