US Patent 11323348 API dependency error and latency injection

The disclosure is directed towards systems and methods for injecting or introducing synthetic errors and latency for testing purposes into microservices provided by one or more servers. A device acting as an intermediary to communication can inject errors into responses or requests traversing the device. The errors can include additional latency, dropped packets, or memory or disk errors. Introducing errors and latency for testing purposes can be used to proactively monitor and identify issues with resources.