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Backend Engineer Interview Crash Course
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Module 4
Advanced Database Strategies
1
Optimizing PostgreSQL Queries with Advanced Indexing Strategies
Formulate an indexing strategy for a PostgreSQL database using B-tree, composite, and partial indexes to optimize specific query patterns.
2
Understanding Transaction Isolation Levels
Explain transaction isolation levels (e.g., Read Committed, Repeatable Read) and their trade-offs between data consistency and concurrency.
SQL vs. NoSQL: Choosing the Right Database
Articulate the decision criteria for choosing between SQL and NoSQL databases based on the CAP theorem, data model, and query flexibility requirements.
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Service Resilience and Fault Tolerance
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Asynchronous Systems with Message Queues