How to solve the double payment problem in case of a database write failure?
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Python
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584
Write a function that takes a list of numbers as input and returns a new list containing only the unique elements of the original list, maintaining their order.
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166
Have you worked with Protocol in Python? What are Generics?
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157
Tell about locks and semaphores. What are locks needed for, and what is the difference between multithreaded and asynchronous modes?
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154
Tell me about the Unit of Work pattern. How to manage transactions in the business scenario of creating an order?
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150
Tell about ways to execute code in Python: multiprocessing, multithreading, asynchronous.
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142
What package managers do you use? Why is a lock file needed?.
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141
Tell us about Pydantic. How does it differ from dataclass?
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133
How would you solve the problem of slow database queries?
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Tell me about architectural patterns. How to organize code for integration with an external gRPC service?
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132
Tell me about your experience. What have you been doing, what have you worked on?
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131
Tell about the levels of transaction isolation.
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How does Read Committed work at the level of two transactions? Provide an example.
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130
Tell about window functions in SQL.
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119
What linters, formatters, and type checkers have you worked with in Python?
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119
Tell me about MVCC (Multi-Version Concurrency Control).
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118
Что такое ACID? Расскажи про каждую букву.
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110
Tell me about indexes in Postgres. What types are there, and how does a B-tree index work?
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104