CareerCup

Describe the design of a low latency distributed environment where multiple processes( or threads) need to access shared data structure or a database for a fast ( speaking of a fraction of a milisecond) read or update. You have to process tons of request very quickly ( you can think of market price data as an example, etc). How would you build such an environment in the most efficient way? Describe the solution in details(a few sentences).

If you have a 10G file and only 2G of memory, how can you fit the file into the memory. Describe the solution and write the code.