Load capacity - sorting out the mind map that affects load capacity

Hello everyone , I meet you again , I'm the king of the whole stack .

When we are developing and operating the system , Be sure to know the load capacity of your current system , In some business scenarios , Can do with ease , There will be no big problems .

The following is a summary of the load capacity of some systems , This summary is the result of a good blog post I read , I think a lot of knowledge can be sorted out better with mind mapping , In this way, my thinking is clear , And it's also a little deeper for memory than taking notes directly .

One . Measures

What is load balancing ？ Concept ： Requests per second （request presecond）, This is the number of requests that can be successfully processed per second . Increase the number of users , The number of requests per second will also increase , Finally, it will reach a point . At this point, the number of concurrent users starts ” To overwhelm ” The server . Adding concurrent users , The number of requests per second began to decline , Instead, the response time will increase . This critical point can be considered as the maximum load capacity of the current system .

Two . Related factors Now use mind map , As shown in the figure ：

Mind mapping I use Baidu brain map , Load capacity factors mind map sharing address ： http://naotu.baidu.com/file/14982c5df638481d27a65449471eac27?token=a28c1c66334c6ad2 password ：usiw

3、 ... and ： General architecture

General Java The application architecture of the back-end system is shown in the figure below ：LVS+Nginx+Tomcat+MySql/DDB+Redis/Codis

among , The dotted line is the database layer , It adopts the master-slave mode . You can also use redis cluster(codis etc. ) as well as mysql cluster(Cobar etc. ) To replace .

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