I have a few questions regarding ODC architecture and am feeling a bit confused. Could you provide some guidance or share relevant links?
1.  If a production error occurs while consuming a REST API located within a library (LIB), which stage(s) will be affected by the fix?

a. dev, b. stg, c. prod, d. 3 env

2. The static header common in LIB, how to use? 
a. "Input type list" is not the right approach.
b. Directly plugging it in for use is also incorrect.
c. using a service action to fetch all information data
d. using an external URL to call the header.

3. The question about being "highly independent": 
a. fewer breaking changes
b.increasing deployment frequency.
c. Increase development
d.
4. The question about "direct integration" instead of Cold cache
a. The app performance is not a concern
b. Data is frequently updated.
c. Source api code not support synch