lowed is a small service for generating a never-ending stream of random metric samples for a configured list of service names and metric types. It specifically generates DogStatsD metrics suitable for consumption by Veneur.

It generates an instance of each metrics for each of the configured services every delay. Non-counter metrics support a range with a max and min, from which a random value will be generated.

TODO

Tags!

Usage

./lowed -f example

Example Config

delay: "100ms"
stats_address: 127.0.0.1:8200
services:
  - stallion_srv
  - okapi_srv
  - ermine_srv
  - wombat_srv
  - warthog_srv
  - burro_srv
metrics:
  counters:
    - name: request_errors_total
    - name: request_successes_total
  timers:
    - name: request_duration_ms
      range:
        min: 10
        max: 300
  histograms:
    - name: request_body_bytes
      range:
        min: 1024
        max: 307200
  gauges:
    - name: request_queue_depth
      range:
        min: 1
        max: 20

Name

Lowed is named for [Paddy Lowe], codesigner of the Mercedes F1 W05 Hybrid. Since lowed is an engine for generating metrics, it made sense to choose someone who designed and engine! Also, it is a clever homonym of "load", since the generated metrics may provide load testing fodder.