Podcast
Questions and Answers
What is a common cause of performance issues in multi-tier architectures?
What is a common cause of performance issues in multi-tier architectures?
- Network congestion (correct)
- Memory leaks
- CPU contention
- Disk I/O
Which of the following directly affects user-perceived performance?
Which of the following directly affects user-perceived performance?
- Throughput
- Concurrency
- Scalability
- Latency (correct)
Increasing __ can help reduce queue lengths in a multi-tier application.
Increasing __ can help reduce queue lengths in a multi-tier application.
- Locks
- Caches
- Servers
- Threads (correct)
Which of the following is NOT a common remedy for database bottlenecks?
Which of the following is NOT a common remedy for database bottlenecks?
Which technique improves performance by allowing asynchronous processing?
Which technique improves performance by allowing asynchronous processing?
What is the primary benefit of load testing?
What is the primary benefit of load testing?
Which is NOT a common reason for performance issues in multi-tier applications?
Which is NOT a common reason for performance issues in multi-tier applications?
Which technique improves efficiency by reducing duplicated data transfer?
Which technique improves efficiency by reducing duplicated data transfer?
Vertical scaling improves __ in multi-tier architectures.
Vertical scaling improves __ in multi-tier architectures.
Which testing type verifies application performance under increasing user load?
Which testing type verifies application performance under increasing user load?
Which technique verifies application behavior under sustained high load?
Which technique verifies application behavior under sustained high load?
Caching improves performance primarily by:
Caching improves performance primarily by:
Increasing query efficiency reduces:
Increasing query efficiency reduces:
__ bottlenecks are often best addressed by optimization and indexing.
__ bottlenecks are often best addressed by optimization and indexing.
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Study Notes
Performance Issues in Multi-Tier Architectures
- A common cause of performance issues is database bottlenecks.
Factors Affecting User-Perceived Performance
- Increasing throughput directly affects user-perceived performance.
Reducing Queue Lengths
- Increasing throughput can help reduce queue lengths in a multi-tier application.
Remedies for Database Bottlenecks
- Using a faster database is NOT a common remedy for database bottlenecks.
Asynchronous Processing
- Message queuing is a technique that improves performance by allowing asynchronous processing.
Load Testing
- The primary benefit of load testing is to identify performance bottlenecks in an application.
Common Reasons for Performance Issues
- Insufficient resources is NOT a common reason for performance issues in multi-tier applications.
Data Transfer Efficiency
- Data compression is a technique that improves efficiency by reducing duplicated data transfer.
Vertical Scaling
- Vertical scaling improves throughput in multi-tier architectures.
Performance Testing
- Load testing is a type of testing that verifies application performance under increasing user load.
Sustained High Load Testing
- Soak testing is a technique that verifies application behavior under sustained high load.
Caching
- Caching improves performance primarily by reducing the number of database queries.
Query Efficiency
- Increasing query efficiency reduces the time spent on database queries.
Database Optimization
- Database bottlenecks are often best addressed by optimization and indexing.
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