shopping card plugins always require more RAM, are you sure this amount of RAM is enough for a hosting panel?
I am getting confused when choosing a caching solutionf for my wp site, i should install caching for my hosting or directly install on my wp site?
Can you share detailed specfications what i should look for this vps plan? ram, cpu, control panel, os..etc?
1-2Gb of ram is a good starting point, however a scalable VPS solution would work best, since you can updrage/downgrade your plan at anytime depending on your requirements.
You can do both, for wordpress I would suggest WP Rocket, W3 Total Cache or WP Super Cache. Regarding the web server cache it will depend on which web server you decide to go with. Varnish is a good solution when using Apache or Litemage for Litespeed webserver.
What really puts an impact on performance is the amount of VM's hosted on the node. If the node is heavly oversold you wont be able to use the allocated resources to their full potential.
Its impossible to say the exact numbers for each of those without detailed performance and baseline testing for your site as it is. Like I said start at the low end and upgrade as needed. RAM is probably the #1 criteria. With free Webmin as control panel start with a 1 GB plan. If you want to go with cPanel up it to 3 GB RAM. Many VPS hosts offer cPanel at low price and will install it for you.
)
