After introducing the istio service mesh, do I still need to use the go-micro microservice framework?

Service mesh and microservice framework: collaboration or replacement?

When building microservice architectures, service mesh technologies such as Istio and microservice frameworks such as go-micro and go-zero are often mentioned at the same time. There is partial overlap in their capabilities, such as service discovery, which raises the question: after Istio is introduced, are frameworks like go-micro still needed?

Service mesh like Istio focuses on managing communication and governance between microservices, providing service discovery, traffic control, monitoring and other functions. These functions may have been handled by frameworks such as go-micro. However, the introduction of Istio simplifies the way microservices are called, making them closer to the direct connection of single instances, and handing over complex tasks such as service governance, traffic management and monitoring to Istio, thereby reducing the burden on the microservice framework and making it more focused on business logic.

However, the service mesh is not the perfect solution. It increases the complexity of system operation and maintenance and may introduce network latency. Therefore, whether to adopt a service mesh needs to be weighed based on the actual business scenario. In addition, the service mesh has requirements for network protocols, and currently supports HTTP and gRPC, and the support for other protocols may be limited.

In summary, after introducing service mesh such as Istio, microservice frameworks such as go-micro can still be used, but the functional focus of the framework will change, mainly dealing with business logic, while service governance is the responsibility of the service mesh. The choice of which combination to use depends on the project's requirements and complexity.

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