They could have fixed part of the architecture by having a "cache service" process (4 cpus: 3 for proxies, 1 for the cache service). With that they'd have a sin

They could have fixed part of the architecture by having a "cache service" process (4 cpus: 3 for proxies, 1 for the cache service). With that they'd have a single point consuming their limited resources (memory, cpu and socket for redis connections), using IPC to communicate between process.