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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
I think there are a lot of things that can be referred to as options to avoid your ISP from dropping you. But when your service is spending over $100k a month on an AWS bill like Parler claims to have been you are scaled up enough to need a lot of power, bandwidth, and storage to recreate that infrastructure. There are a lot of P2P and blockchain decentralized (or mostly) people could try to use. But the main issue with them is how tech savvy need to be to even access them. Most of the things in this example list require deeper understanding than most Parler users probably have.
https://github.com/gdamdam/awesome-decentralized-web
Even something as simple as DNS can be blocked or altered by the registrar or provider(s). So you need to have a top down solution to all the various potentialities.