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A typical application may consist of 10, 50, or even more than 100 microservices. Microservice architectures are quite popular nowadays. It's not easy to run one or two microservices locally and use the rest of them from the staging environment. Instead of making changes in the configuration of each service (and most likely restarting it afterward), we just update the router’s config file and it immediately switches the target for us. No service or router restart is needed. The plan is to route all the local traffic through a reverse-proxy server.