What to watch
Crash the US API. For five seconds every request fails while the router notices, then Europe picks it all up. Only one region takes traffic at a time, so this pair buys you survival, not extra capacity: at 4x the active region melts while the standby sits at zero.What it is made of
Under load
Measured by running this design through the simulator at multiples of its own offered rate of 250 requests a second. Twenty seconds of simulated time, one fixed seed, so the same numbers come out every time.This design holds 375 requests a second with 0% errors. At 500 it is losing 23% of them.
Open this example
Load Multi-region failover from the Examples menu and drag the traffic slider yourself.