By default, the ReSharper cache is stored in the solution folder. It’s one extra folder and one extra .user file. It’s no big deal but it does clutter up your solution a bit – especially since the files provide no real value.
I prefer to store the ReSharper cache in the system Temp folder. This setting is available by visiting ReSharper > Options > Environment > General.
Just update where you’d like to store the ReSharper cache and you’re good to go. Note, the .user file continues to linger around the solution folder but at least the _ReSharper.SolutionName folder is moved out of sight.