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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.
For Market feed and order placements, https://github.com/zerodha/gokiteconnect
For talib, https://github.com/markcheno/go-talib
The Tour of Go is a nice playground and has helped me onboard the syntax quickly. The golang vscode extension will make your life much easier. And for testing, see here and here. Then write your own application. The first few days will be a friction as many things will be new. Good luck!
NOTE:
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Hence, a higher number means a more popular project.