What is the difference between the operators == and is in Python?
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What are the disadvantages of JWT?
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What is an abstract class? Have you used it?
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What is __slots__ in Python and what are its features?
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What is an index in a database, what types are there, and what are the pros and cons?
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def withdraw(user_id, amount): user = User.objects.filter(user_id=user_id).update(balance=F('balance') - amount) if user.balance > amount: # raise InsufficientFundsError() user.balance -= amount user.save()
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Have you ever optimized SQL queries or analyzed performance? What tools did you use? What does EXPLAIN show?
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How do Kafka and RabbitMQ fundamentally differ?
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What are the advantages and disadvantages of ORM?
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What has changed in HTTP/3?
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Do you use LLM/AI tools in your coding work and how do you interact with them?
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What is Dependency Injection and why is it needed?
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When might an optimizer not use an existing index?
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How does a generator work in Python and how does it differ from a regular function and an iterator?
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What is the difference between a RabbitMQ consumer and a Kafka consumer?
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What is the difference between DELETE and TRUNCATE in SQL?
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How to create a generator in Python? What happens with two consecutive yields in a generator function?
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with transaction.atomic(): provider_order = ProviderOrder.objects.select_for_update().get(id=provider_order.id) unblock_provider_order(provider_order.id) notify_contractor(provider_order=provider_order)
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How to give an AI agent a constant project context so as not to describe it again in each session?
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Describe the lifecycle of an HTTP request in Django from the client to the response.
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