No - different processes were reading and writing. And once you implement a global map which is accessible from multiple processes, you might as well use an ex

No - different processes were reading and writing. And once you implement a global map which is accessible from multiple processes, you might as well use an existing solution, like Redis. Or, as I've learned, pgSQL - which gave me the same performance with less moving parts (because I was already using it) when I disabled WAL.