When a connection is closed in a connection pool, what actually happens to that connection?
- It is immediately returned to the pool
- It is marked as unavailable
- It is permanently deleted
- It is physically closed
When a connection is closed in a connection pool, it is not physically closed but rather returned to the pool, making it available for reuse. This enhances efficiency by minimizing the need for new connections.
How does connection pooling improve the performance of database-driven applications?
- Caches database queries
- Has no impact on database connections
- Increases the number of open database connections
- Reduces the number of open database connections
Connection pooling improves performance by reducing the number of open database connections, reusing existing ones, and avoiding the overhead of opening and closing connections frequently.
What role does the JDBC API play in connection pooling?
- Deals with servlet lifecycle
- Handles SQL queries
- Manages database connections
- Provides database authentication
The JDBC API is responsible for managing database connections in connection pooling, ensuring efficient utilization and reuse of connections in a database-driven application.
How does a servlet container typically interact with a connection pool?
- It delegates management to the application.
- It directly manages the pool.
- It doesn't interact with connection pools.
- It relies on the database server for connection management.
In a typical scenario, a servlet container directly manages the connection pool, ensuring efficient utilization and management of database connections within the application.
In connection pooling, the pool size is defined by the _________ and _________ parameters.
- initialConnections, maxConnections
- initialSize, maxSize
- minConnections, maxConnections
- minSize, maxSize
In connection pooling, the pool size is defined by the initialSize and maxSize parameters.
The process of retrieving a connection from the pool, using it, and then returning it is known as _________.
- Connection Fetching
- Connection Recycling
- Connection Recycling
- Connection Releasing
The process of retrieving a connection from the pool, using it, and then returning it is known as Connection Fetching.
To ensure efficient use of database connections, pools use a technique called _________.
- Connection Caching
- Connection Optimization
- Connection Pooling
- Connection Recycling
To ensure efficient use of database connections, pools use a technique called Connection Pooling.
When no connections are available in the pool, the request is put into a __________ until a connection becomes available.
- buffer
- hold
- queue
- stack
When no connections are available, the request is put into a queue until a connection becomes available in the pool.
_________ in connection pools helps to identify and replace connections that are no longer viable.
- Expiration
- Monitoring
- Replacement
- Validation
Validation in connection pools helps to identify and replace connections that are no longer viable or have become stale.
During peak usage, a web application's response time degrades significantly. Which connection pool setting should be investigated?
- Connection Timeout
- Max Connections Per Partition
- Min Pool Size
- Partition Count
To address degraded response time during peak usage, investigate the Max Connections Per Partition setting, which controls the maximum number of connections allowed in each partition.