InfluxDB with Zabbix or Telefraf?
You might want to look into using Spark, and if are able to introduce AWS into the architecture, Kinesis Data Firehouse.
Spark: https://medium.com/analytics-vidhya/processing-time-series-data-in-real-time-with-influxdb-and-structured-streaming-d1864154cf8b
Another article on Spark: https://www.influxdata.com/blog/zeppelin-spark-and-influxdb-for-big-data-time-series-scenarios/
Kinesis Data Firehose: https://aws.amazon.com/kinesis/data-firehose/?kinesis-blogs.sort-by=item.additionalFields.createdDate&amp;kinesis-blogs.sort-order=desc
Spark is fairly widely used these days and integrates with InfluxDB, and Kinesis Data Firehose is used for heterogeneously ingesting large amounts of data in real time.