What is Trending
Checkout what is trending, do not learn something doomed to be deprecated.
Where to track the trends
State Of JS
The latest is https://2021.stateofjs.com/en-US/
Annual developer survey. And compare the popularity on the trends page.
Updated every October (before the Nov/Dec holiday season) summarizing the trends this year.
Besides the annual summary, check https://github.com/trending for current tranding GitHub repos.
DB Engines: Database Ranking
Updated every month, ranking 300+ databases.
TIOBE: Programming Languages Ranking
Updated every month, ranking the programming languages.
PopularitY of Programming Language
Similar to TIOBE ranking but by analyzing how often language tutorials are searched on Google.
Compare the open source projects.
Check technology adoption: https://discovery.hgdata.com
E.g. Google BigQuery: https://discovery.hgdata.com/product/google-bigquery