I have created a wordpress application, last year and it got crashed. when 1000 users are trying to signin at the same time.. can someone please suggest how do I manage users and signing activity. I am sure approx 4000 to 5000 users will go for it.
What will be solution for server not crashed, May be modification in server can help and I should make changes?
Previous year nginx server (we have own server) configuration: 4 VCPU/16GB RAM/200GB root space
Please suggest if I have to use any technology/framework or any modifications on server is required?
How to manage the load balancing on server and virtual testing of heavy users before going live.