1000 concurrent users?

Dr. McKay · Nov 22, 2017

I have a client they are having a site with 1000 concurrent users at any second of the day. Their VPS was down when the traffic reached out to this amount of 1000 concurrent users. They asked me what dedicated server specs can handle 1000 concurrent users? Have you actually run any similar website with same traffic? Also if its possible could you also share specs for the server?

RackService · Nov 22, 2017

They use a VPS, with which specs?

Because if its a low-spec VPS ,increasing the resources may be the first easy thing to do (before switching to anything else)

Floxera-Jose · Nov 22, 2017

For 1000 concurrent users you probably might NOT need a dedi, but a better VPS...
Vps with SSD, install a CDN, check the code quality of the website/plugins, optimize the database and a cache plugin 8if it's Wordpress)
This is imo the beginning.
There are clients in shared platforms that have the same, or even more concurrent users and they have no problems at all.
Sometimes a poor VPs is much more worse than a good optimizes shared server. Good luck! friend!

Dr. McKay · Nov 23, 2017

RackService said:
They use a VPS, with which specs?

Because if its a low-spec VPS ,increasing the resources may be the first easy thing to do (before switching to anything else)

Floxera-Jose said:
For 1000 concurrent users you probably might NOT need a dedi, but a better VPS...

It was a VPS 8GB of RAM, installed CDN but I think it was not optimized good enough to accommodate that amount of traffic.
Installing caching system can solve this problem. I am looking for improvements so it will not be down or VPS is overload when traffic increased so fast.

neckom · Nov 23, 2017

hi, McKay

with that usage, I think your mysql needs to be optimized.

Also, if too many concurrent connections, separate web and mysql server would help a lot...

There are really no set list of hardware recommendations simply because there are a lot of variables that determine stress load, ie: various attachments, how many options you turn on, etc.

My recommendation is to buy a stable VPS with fast ssd disk and then try to optimize it...

mobin · Nov 28, 2017

Of course you need a better specs to handle 1000 concurrent users, there is lot more that you can do in application/application server level. What kind of pages you are servibg - is it static or dynamic? Is its static, it'll be faily easy and no need for a better configured server. A server with Nginx in front can solve your problem with less server specs. If its dynamic, you may need dynamic page caching and use CDN for static files. The page caching [ something you can rely here is varnish or nginx proxy caching ] can make a lot of difference in load and helps you to make things stable. Additionally check your MySQL settings and make sure they are properly optimized.

1000 concurrent users?

Dr. McKay

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RackService

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Floxera-Jose

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Dr. McKay

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neckom

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mobin

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