PayPal Interview Question for Software Engineer / Developers






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1
of 1 vote

Can't access a file in parallel If any process lock the file. Incase of shared lock as well, It may degrade performance as it is IO operation, if your are not reading file sequentially, performance will degrade. You need to access file using memory mapping or using buffered I/O.

You can also use your own buffering mechanism creating a separate thread to maintain read buffer. Creating Consumer and Producer relating ship between two threads.

- Sach July 13, 2012 | Flag Reply
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0
of 0 vote

Try mmap: linux.about.com/library/cmd/blcmdl2_mmap.htm

- Anonymous October 20, 2013 | Flag Reply


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