Challenges of microservices architectures
1. Challenges of microservices architectures
The microservices architecture is a common architecture for new enterprise applications being developed today. However, microservices architectures also provide significant challenges. In a microservices architecture, each microservice tends to be simpler and easier to understand than the monolithic application. Each service can be developed, deployed, and tested separately. However, having more deployable entities causes a greater operational burden for an organization. The operations team must manage tens, hundreds, or thousands of microservices. Automated builds, testing, and deployments are vital to maintaining the health and efficiency of your applications and your operational team. With so many services, it's also important to maintain consistent logging, reporting, security, and authorization for your services. A microservices architecture includes the communication between microservices, which can be complex. If you do not design your systems well, it can be difficult to understand the "spider web" of communication between microservices. Microservices can also introduce communication latency. For a monolith, calls between components are typically in the same process running on the same hardware. With microservices, calls between services happen across the network, which can be thousands of times slower. When a business operation requires many microservice calls, the latency can be significant. While unit testing for each microservice can be straightforward, integration testing is typically more challenging. The distributed nature of microservices often means that testing the entire system requires modeling the entire production deployment. Debugging a microservices architecture can also be difficult. If an application consists of many microservices, and each microservice creates its own logs, tracing calls that span many microservices can be challenging. Building microservices requires a commitment to automation and operational excellence. The benefits of microservices generally outweigh the challenges, and we will see how service orchestration and choreography can reduce the complexity of microservice-based applications.2. Let's practice!
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