Circuit breaker pattern: Hystrix is dead, what are you using now?

with hystrix deprecated, we're looking for modern alternatives for implementing the circuit breaker pattern. we currently have a mishmash of custom implementations that are hard to maintain. i've been looking at resilience4j for java, polly for .net, and gobreaker for go. there's also the option of moving this responsibility to a service mesh if we adopt one. the question is, what's the preferred approach these days? application-level libraries give fine-grained control, but require every service to implement it. a service mesh handles it at the infrastructure layer but might be overkill. what are people using in production for robust circuit breaking, and what are the pros and cons of their chosen solution?