Circuit breaker implementation in Java: The service A calls service B and service C every time. If one service fails 3-times in 10 minutes ( or 20 seconds in the implementation) the next call will be blocked for 5 minutes (10 seconds in the implementation). There was given a simulation of remote method calls, I needed to implement only the execute() which calls the remote service if possible.
Where do you see yourself in five years
You have an service that updates a sql DB record every 5 miliseconda and another service that updates the same DB record every 30 seconds and is important. Identify the problem that can occur in this scenario and suggest Solutions to fix it without changing or writing a lot of code
Return maximum number formed by reordering the digits in a given number 43525 --> 55432
questions about whether it works with Java core. Questions about optimistic lock. Questions about what database he knew. Can two objects have the same hash?
You’re given an array of N integers. N may be very large. You know that every integer 1..N appears once in the array, except there is one integer missing and one integer duplicated.
They asked me in cache if we are using hashmap then in multi threading environment the cached data get inconsistent so for that what data structure we can use?
Find the balanced index of an array (coding challenge).
Have you heard about Zalando?
Find the minimum value greater than a certain given value in a sorted array.
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