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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.
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Senior Backend Java Engineer

Interviewed at Wise

3.6★
Feb 19, 2026

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.

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
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Backend Developer

Interviewed at Gett

4.1★
Oct 10, 2018

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

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