The video tutorial explains the use of circuit breaker and retry patterns in microservice architecture. It begins with an introduction to both patterns, followed by a detailed implementation of the retry pattern. The limitations of the retry pattern are discussed, especially when microservices are unresponsive. To address these issues, the circuit breaker pattern is introduced, which prevents repeated failed requests by blocking traffic to down services. The mechanism of the circuit breaker is explained, including its periodic checks to determine service availability. Finally, the tutorial demonstrates how to combine both patterns to enhance system reliability and performance.

What new insight or understanding did you gain from this video?