What was the most challenging technical task you solved in your project?

One of the most challenging technical tasks in a Java project was optimizing database operations with large volumes of data and high load.

The problem was that queries took too long to execute, leading to delays and decreased performance.

To solve this, I:

• Conducted query profiling and identified bottlenecks.
• Rewrote complex queries using more efficient JOINs and indexes.
• Implemented caching of frequently requested data using Redis.
• Used a connection pool to reduce the overhead of establishing connections.
• Optimized the database structure by normalizing and denormalizing tables where justified.

As a result, we significantly reduced response times and improved system stability.