Esp32 Dual core funtionality

[Mohit.Nama]

Hleeo everyone .
i am working on project where i am using two core of esp . i want to know about how two core work (data sharing,SPI flash handeling ) betwwen to core .
1. i am wrintng flash on core 0 and reading from core 1 and send it on mqtt .i am worried bout if any condition bacom that time both core want to acces SPI flash at same point of time ...then waht will happen ,how to handel .....for this i am lookinng for documnest where i can get idea about multicore working flow & error handeling ....


thanks you .