Metrics microservice

Keeps list of metrics.
This microservice is designed to manage various metrics characterizing the operation of a process. Each metric has the following characteristics:

• metric name
• up to 3 types of measurements (in string format)
• date and time is a numerical value characterizing the metric

When adding or updating a metric, statistics on the metric are automatically calculated for different time horizons (you can specify the depth of the horizon) with the calculation of the average, maximum, minimum and accumulated values ​​within each of them.
Data access is provided through a set of API functions.