Capacity planning

help/performance/TOC.md

@@ -12,6 +12,7 @@ user-guide-description: Optimize the performance of your Adobe Commerce or Magen
 - [Development environment recommendations](development-environment.md)
 - [Configuration best practices](configuration.md)
 - [Deployment flow](deployment-flow.md)
+- [Capacity Planning](capacity-planning.md)
 - [High-throughput order processing](high-throughput-order-processing.md)
 - Advanced concepts {#performance-best-practices}
   - [Advanced setup](advanced-setup.md)

help/performance/capacity-planning.md

@@ -0,0 +1,49 @@
+---
+title: Capacity Planning
+description: Learn about the steps necessary for capacity planning for  Adobe Commerce or Magento Open Source. 
+---
+
+## Capacity Planning
+
+we are considering single node/instance/machine setup and try to figure out above configuration
+capacity to handle traffic without break down. we are using universal formula to calculate server
+performance under limited resource & capability
+
+#### Website throughput (concurrent connection)
+
+***1) Lets figure out maximum user simultaneously access website for given configuration***
+
+**Example:**
+````
+Average PHP request time: 650ms
+CPU cores: 4
+Click frequency: 45 seconds
+
+4/0.65 = 3 page views per second * 60*0.75 = 135 max simultaneous user
+
+(Number of CPU cores / Average page Response Time in seconds) * 60 * User click
+frequency in second = maximum simultaneous users
+
+````
+
+***2) Lets check maximum user on website simultaneously***
+
+```
+Number of max request per second * 60 * click frequency of user in seconds = max no. of simultaneous users
+````
+**Example: From Google Analytics **
+```
+Session duration 9 min 10 seconds = 9*60+10 = 550 sec.
+Average click = 4.82
+```
+
+**Average session duration/page per session**
+````
+(550/4.82 = 114 sec) means average user click once every 2 min, it recommended to be 1.
+````
+
+***3) Lets check server capacity => how much traffic & load web server can handle***
+
+```
+Number of CPU cores/average time for page request(in seconds) = Max number of page requests per second
+```