Question

My application has an average of 2000 online users, which is a very high number of page loads. My question is how many mysql queries I can do in each page load ?
because my application requires loading lot of data.

Is it possible that my database crashes? or my server?

_____ SOME INFO _____
Memory Limit: 60Mb
Parallel Processes: 15
Script executing time: 30 seg
DB: MySQL5 (1Gb)

Structure: in the structure, all the tables are really well interconnected. Allmowst the 95% of the fields are INT type (related by FOREIGN and PRIMARY keys).
There are 14 tables. In total, there are 32 INT fields, and 6 TEXT ones.

What if I can’t install applications ON my server, is there any other way to cache my data?

Answer 1

If you have such load, you should probably start thinking about setting up some sort of cache – so request will hit DB only once.

My choice for this would be Varnish.

In case if you have partially dynamic content, which for example is user-related data, you can use it with Edge Side Includes.

Also, try to optimize your queries to as less as possible by aggregating select conditions. For example, first – collect all ids you need to select, then – do SELECT * FROM table WHERE id IN (...)

After that – you will be able to work with result on server side, without bothering database

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EDIT

If you are unable to install any applications on your hosting – then you should proceed with fetching as much data as possible with one request, and then – work with arrays.

And also it is important to have indexed fields – this will speed up your queries.