Tell me about authentication. How does a JWT token work?
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176
Python
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584
What is FastAPI and what is the main concept behind it? Tell about dependency injection.
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154
There is a table with 10 million users, and queries are slow. How to solve this problem? Explain composite indexes and their working principle.
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139
Why is Kafka needed? What are its essence, advantages, and disadvantages? What does it not guarantee?
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132
How to solve the problem when we have many application instances and an SSE/WebSocket connection is open on one instance, but the user connects to another?
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131
How to solve the problem of concurrent access to a product during a sale? How to use Redis to solve this problem without database locking?
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121
What project structure pattern is used in Django? What are its disadvantages and what are the alternatives?
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116
What methods exist for working with and launching Telegram bots? Tell about webhook and polling.
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112
Tell about your experience, what interesting things happened in practice, where and what did you do?
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109
What is denormalization? Why is it needed and what are its disadvantages?
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105