The architecture we use with DAS and GREG
问题 first introduce our use case: The Real-time data analytics platform . One external system product time-series data every 1s.The time-series data consist of [id,time,value] fields .And it support REST API to search these time-series data. We have a lot of (more than 100) standlone CPP programs to analyze the time-series data, and these programs would produce KPI into Database. The programs is realtime computation, every CPP programs read datas per second , doing processing per soncond, and