I'd recommend giving a try to VictoriaMetrics. It requires less hardware resources - RAM, CPU, disk - comparing to InfluxDB [1] and it supports PromQL - much nicer query language for typical time series queries comparing to InfluxQL or Flux [2]. It may be used as a drop-in replacement instead of InfluxDB on the ingestion path [3].

[1] https://medium.com/@valyala/insert-benchmarks-with-inch-infl...

[2] https://medium.com/@valyala/promql-tutorial-for-beginners-9a...

[3] https://github.com/VictoriaMetrics/VictoriaMetrics/wiki/Sing...