reescreva de forma formal em português: "proposed a software reference architecture for Big Data systems based on events and controllers. It is focused on metadata and data caching. Its functionalities includes: stream processing and batch processing. It provides an environment for development of big data software. We are focusing in analytical part only and not the development. ``Furthermore, some stakeholder found internal message queue of the service mesh unnecessary in the initial phase. Some offered a monolith to begin with and gradual breakdown.'' Provide your reponse without using the word message.
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