Slight hijack. I / we went through a very similar tech selection process for timeseries metrics (not logging) ~1.5 years ago. We looked at Druid, ElasticSearch, TimeScale and a bunch of others.

Main takeaways were: the SQL flavor and its aggregations in CH are amazing. Running on a single node for dev laptops is trivial. It’s crazy fast with almost zero tuning.

It does not surprise me at all the CH is powering new products and startups.

Note: hosted CH did not exist yet. We are using Altinity to run our cluster.