how to optimize my wordpress to support lots of visitors

Question

hi all

I created my website with wordpress with great effort and launched my post, I have a dropplet with 1GB of ram (centos 6.4), but many times I could not access my site, because it has fallen, then I had to restart the machine so that it can be solved.

I get about 100-200 visitors a day there are times when visitors are concentrated in 80 parallel visits, ie 80 users accessing at the same time, my vps has fallen 2 times, my question is: How can I prevent these falls or can properly manage these recuros?

I hope you can help me and thanks

Andrew SB · Answer

That isn’t too much of a load. A 1 GB droplet really should be able to handle that. Are you seeing any error messages when it crashes? Is there anything interesting in <code>/var/log/messages</code> ? We can give some general advice, but getting to the bottom of this exact issue would probably be best.

More generally, there is a chance MySQL is running out of memory. In order to give it some extra breathing room, you might want to add a swap file:

https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-centos-6

You may also consider moving to Nginx as it is more lightweight than Apache. Check out:

https://www.digitalocean.com/community/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-centos-6

Setting up caching with something like Varnish is also a good step:

https://www.digitalocean.com/community/tutorials/how-to-install-wordpress-nginx-php-and-varnish-on-ubuntu-12-04

Less specific to your issue, one way to scale out is to add a separate database server:

https://www.digitalocean.com/community/tutorials/how-to-optimize-wordpress-performance-with-mysql-replication-on-ubuntu-14-04

Question

how to optimize my wordpress to support lots of visitors