I think I'm with you about caches. I sometimes wish we wrote modern software for swarms of little 16-bit CPUs with 64kB of RAM and dealt with larger data struc

I think I'm with you about caches. I sometimes wish we wrote modern software for swarms of little 16-bit CPUs with 64kB of RAM and dealt with larger data structures by passing messages to other CPUs and to a DRAM-backed database. And yes, a lot of software architecture is actually about emulating the above picture on a machine that pretends to have a flat address space, even though it actually only has 64kB of truly random-access memory.