deepaknverma/10 Tips for Optimizing NGINX and PHP-fpm for High Traffic Sites

## 10 Tips for Optimizing NGINX and PHP-fpm for High Traffic Sites
Please take a look at the original article (http://www.softwareprojects.com/resources/programming/t-optimizing-nginx-and-php-fpm-for-high-traffic-sites-2081.html) as it includes excellent configuration file examples.

1. Switch from TCP to UNIX domain sockets:
When communicating to processes on the same machine UNIX sockets have better performance the TCP because there's less copying and fewer context switches.

2. Adjust Worker Processes:
Set the worker_processes in your nginx.conf file to the number of cores your machine has and  increase the number of worker_connections.

3. Setup upstream load balancing:
Multiple upstream backends on the same machine produce higher throughout than a single one.

4. Disable access log files:
Log files on high traffic sites involve a lot of I/O that has to be synchronized across all threads. Can have a big impact.

5. Enable GZip.

6. Cache information about frequently accessed files.

7. Adjust client timeouts.

8. Adjust output buffers.

9. /etc/sysctl.conf tuning.

10. Monitor:
Continually monitor the number of open connections, free memory and number of waiting threads and set alerts if thresholds are breached. Install the NGINX stub_status module.
	Please take a look at the original article (http://www.softwareprojects.com/resources/programming/t-optimizing-nginx-and-php-fpm-for-high-traffic-sites-2081.html) as it includes excellent configuration file examples.

	1. Switch from TCP to UNIX domain sockets:
	When communicating to processes on the same machine UNIX sockets have better performance the TCP because there's less copying and fewer context switches.

	2. Adjust Worker Processes:
	Set the worker_processes in your nginx.conf file to the number of cores your machine has and increase the number of worker_connections.

	3. Setup upstream load balancing:
	Multiple upstream backends on the same machine produce higher throughout than a single one.

	4. Disable access log files:
	Log files on high traffic sites involve a lot of I/O that has to be synchronized across all threads. Can have a big impact.

	5. Enable GZip.

	6. Cache information about frequently accessed files.

	7. Adjust client timeouts.

	8. Adjust output buffers.

	9. /etc/sysctl.conf tuning.

	10. Monitor:
	Continually monitor the number of open connections, free memory and number of waiting threads and set alerts if thresholds are breached. Install the NGINX stub_status module.