Using service mesh for shared concerns

As web services' frameworks and standards evolve, the amount of boilerplate or shared application concerns is reduced. This is because, collectively, we figure out what parts of our applications are universal and therefore shouldn't need to be re-implemented by every programmer or team. When people first started networking computers, programmers writing network-aware applications had to worry about a lot of low-level details that are now abstracted out by the operating system's networking stack. Similarly, there are certain universal concerns that all microservices share. Frameworks such as Twitter's Finagle wrap all network calls in a circuit breaker, increasing fault tolerance and isolating failures in systems. Finagle and Spring Boot, the Java framework we've been using for most of these recipes, both support exposing...