We're one of those OSS alternatives (HyperDX) - built on Clickhouse. While I can't say it's stupid simple to scale Clickhouse (because anything stateful is inherently hard to scale), it's orders of magnitude easier than other platforms like Elastic and gives you a lot more flexible tuning options (last co I was at, we ran that at massive scale, it was an absolute handful).
In theory, you can get away with just running a Clickhouse instance purely backed by S3 to get durability + scalability (at the cost of performance of course). It all depends on what scale you're running at and the HA/performance requirements you need.
In theory, you can get away with just running a Clickhouse instance purely backed by S3 to get durability + scalability (at the cost of performance of course). It all depends on what scale you're running at and the HA/performance requirements you need.