Is cache really helpful?

[kangwonlee]

Is cache really helpful?

[kangwonlee]

• Also for nightly builds, probably better not caching
• Does Github Actions support conditional caching?

[kangwonlee]

Test ipynb on Google Colab

Before Cache

	Minites	Seconds	Total
Set up job		2	2
Checkout		1	1
Setup python	0	0	0
Install dep	1	48	108
pytest	6	28	388
	8	19	499

After Cache

	Minites	Seconds	Total
Set up job		2	2
Checkout		1	1
Setup python	0	2	2
Update pip		2	2
Create venv		4	4
Active venv		0	0
Cache venv		1	1
Install dep	1	28	88
pytest	4	54	294
	6	34	394

Why pytest runs faster?

[kangwonlee]

adjusted as of e8818b1