Question

In my doPost method of the servlet I need to access a file (shared resource ) and update the file .
How do I cater to some 100 users using this at the same time ?

Regards,
Mithun

Answer 1

• Create separate singleton class for file access.
• Use Read and WriteLock from java.util.concurent package to protect file access.
• Cache, so that you won’t have to do file read if all you have to do is to return file content.