How does PHP handle thousands/millions of requests ? [closed] - php

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Closed 9 years ago.
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I've been porting some code from java to php, and noticed that php doesn't have multithreading. I'm just curious as to how else would web services handle thousands/millions of requests ?

PHP doesn't care how many requests there are, it's the web server that has to handle/thread the request (instances).

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Determine server requirements for PHP application [closed]

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Closed 5 years ago.
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I'm currently working on a web app and if all goes to plan, it could very well grow extremely quickly. This is the first app I'm building where server requirements are a big question to me. What can I do to determine how much bandwidth, ram, and processing power I'm going to need?
Is there a specific term to what I'm trying to find out here? I've heard of stress testing but I'm not sure that's what this is.
Any help would be great.
You can use apache jMeter http://jmeter.apache.org/ for load/stress testing.
Here is a tutorial which might help you.
https://www.digitalocean.com/community/tutorials/how-to-use-apache-jmeter-to-perform-load-testing-on-a-web-server

Why would we use two servers for one website [closed]

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Closed 5 years ago.
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I am relatively new to Web development. I was reading about Remote files in PHP, and I came across this question at
Quara
My question is why would we require to use a second server in general?
Normally multiple servers used for high availability.
Using single server is a bottle nick. If it is goes down, your web will not be available.
Also multiple servers used to balance the load on each server.

Nginx not starting after restarting VPS [closed]

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Closed 6 years ago.
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I am getting these error after restaring my vps and restarting nginx. Can someone tell me whats the problem?
Thank you guys. I got it corrected myself. There was an error in inforgein.conf. I restored the old configuration file.

What's the most complete and heavy in features free calendar software with scheduling capabilities [closed]

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Closed 6 years ago.
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I"m looking for a completely free calendar software with decent to lots of scheduling capabilities. Any suggestions?
Really there's a bunch out there, but you might want to take a look at PHP-Calendar to get started.

Automatic backup [closed]

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Closed 6 years ago.
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I need to backup automatically daily my database in mysql and all image files on the server.
Is there a way to backup these things and send it on my email address ?
You can write a bash script that contains gzip, mysqldump and mail commands and have it run daily via cron job.

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