Mono.zip -

: It executes all provided Mono sources concurrently, significantly improving performance for I/O-bound operations like calling multiple microservices.

Avoid exception causes to stop Mono.zip immediately - Stack Overflow Mono.zip

: If one source fails, the entire operation fails immediately, and all other pending sources are cancelled. : It executes all provided Mono sources concurrently,

: If any of the input Mono sources complete without a value (empty), the entire zip operation completes empty immediately. the entire operation fails immediately