maximumUnreadSteps

const maximumUnreadSteps: 60 = 60

The most steps a world keeps an event for a system that has read it before and has not yet read it again: one second, so a system that runs every sixth tick, or every other one under load, reads every event since its last read. A read later than this gets what is left, the oldest gone, counted in the heartbeat’s figures and named in development.