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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.
If you are somewhat good with computers, get an Asus router with a broadcom chipset that can run Merlin WRT. They are rock solid and feature packed (you can even adjust the wireless power level, since you're having wifi issues). There's a list of supported routers here: https://github.com/RMerl/asuswrt-merlin.ng/wiki/Supported-Devices
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.