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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 the upgrade to Android 8 or higher is not available for your tablet, which it seems to be in your case, there are two solutions I see, flash a custom ROM of Android on it or buy a newer device. For the ROMs, it can allow you to get more superior versions, you can get these ROMs on forums like XDA Developers, which I recommend. On the other hand, I want to tell you some warnings, some features may not work or malfunction, this is usually specified and also, there is an absence of Google services, you should use MicroG, MindTheGapps or Open GApps to have them, choose the one that is recommended by the developer of the ROM you have chosen. If you don't follow the installation instructions correctly, it can cause consequences, like device bricking, it never happened to me personally, I always followed the different guides well, so at your own risk.
If the upgrade to Android 8 or higher is not available for your tablet, which it seems to be in your case, there are two solutions I see, flash a custom ROM of Android on it or buy a newer device. For the ROMs, it can allow you to get more superior versions, you can get these ROMs on forums like XDA Developers, which I recommend. On the other hand, I want to tell you some warnings, some features may not work or malfunction, this is usually specified and also, there is an absence of Google services, you should use MicroG, MindTheGapps or Open GApps to have them, choose the one that is recommended by the developer of the ROM you have chosen. If you don't follow the installation instructions correctly, it can cause consequences, like device bricking, it never happened to me personally, I always followed the different guides well, so at your own risk.