Circuit breaker is a design pattern, not an architecture pattern.

Event sourcing is badly written. I'm guessing that one is supposed to look at a seperate event log instead of querying the data directly.

Not understanding the Sidecar pattern either. Does L4/L7 imply L4, 5 6 and 7, or just L4 (transport layer) and L7 (application layer)? Does sidecar then simply suggest seperating application logic from cross-cutting concerns (communication, security, logging etc.)?