Measures of developer productivity

The most used metrics are

1. lines of code (LOC) per unit time (Delorey, Knutson, & Chun, 2007; Maxwell, Van Wassenhove, & Dutta, Oct 1996) 
2. Function points per unit time (Delorey et al., 2007; Maxwell & Forselius, 2000).
3. Number of diffs landed per unit time (Facebook, Uber)

Cloud Connectivity Patterns

https://blogs.oracle.com/cloud-platform/cloud-to-on-premise-connectivity-patterns-v2

Postgres internals

http://www.interdb.jp/pg/

Finding out what the world is working on

Came across this link : https://stackify.com/popular-programming-languages-2018/ which pointed me to these two links

1. https://www.tiobe.com/tiobe-index/ the languages that are popular today
2. https://octoverse.github.com/projects the projects that are popular today.