Slowness in loading a huge list of target hosts

[jeansantos]

Describe the bug
Slowness in loading a big list of target hosts
For ~1000 hosts, it takes ~20 seconds to load.

To Reproduce
Steps to reproduce the behavior (1/2):

1. Open the App
2. OIDC Login
3. Long waiting time (Blank Screen)

Steps to reproduce the behavior (2/2):

1. Go to Sessions list page
2. Go back to Targets list page
3. Long waiting time (Freezed Screen)

Expected behavior
Smooth transitions and short loading time

Additional context
The application was built with a code base of the commit 91a6023

[yongzhang]

I also experience bad performance issue when upgraded to v2.0.0+, I think this is also caused by performance issue. v2.0.1 is even worse. I only have 60 targets.

[yongzhang]

I also experience bad performance issue when upgraded to v2.0.0+, I think this is also caused by performance issue. v2.0.1 is even worse. I only have 60 targets.

I tried v2.0.2 today, I think it's a huge improvement on performance. 💯