You're working on a project where the database server is frequently overwhelmed with connection requests, leading to performance degradation. How would you adjust the database connection pool settings to alleviate this issue?
- Enable connection multiplexing
- Implement connection reuse strategy
- Increase the maximum number of connections in the pool
- Reduce the idle timeout for connections
When the database server is overwhelmed with connection requests, increasing the maximum number of connections in the pool can help accommodate more simultaneous connections, reducing the chances of connections being rejected or queuing up. This can alleviate the performance degradation by allowing the application to handle more concurrent requests. Increasing the maximum number of connections should be done cautiously, considering the database server's capacity and resources.
What is the primary package used in Go for SQL database access?
- database/sql
- go/sql
- golang/sql
- sql
In Go, the primary package used for SQL database access is database/sql. This package provides a generic interface for working with SQL databases, allowing developers to execute queries and work with result sets efficiently.
When declaring multiple variables in a single statement in Go, you can use _______ to assign values to some or all of them.
- :=
- const
- map
- range
In Go, the := operator is used for short variable declarations. It allows declaring and initializing variables in a concise manner, especially useful when dealing with multiple variables in one statement.
Which SQL database access package is commonly used in Go?
- go-sql
- gorm
- sql.DB
- sqlx
In Go, the commonly used SQL database access package is sql.DB, which is provided by the database/sql package. This package facilitates database interactions such as executing queries, preparing statements, and managing transactions.
Which package in Go provides support for reflection?
- encoding/json
- fmt
- io/ioutil
- reflect
The reflect package in Go provides support for reflection. It exposes types and functions that allow developers to inspect the structure of objects, manipulate their values, and perform type conversions at runtime.
Gorilla Mux handles route conflicts by _______.
- Using the method Handle
- Using the method HandleFunc
- Using the method HandleFunc and PathPrefix
- Using the method NewRouter
Gorilla Mux handles route conflicts by allowing the use of HandleFunc and PathPrefix methods, which enables the routing of requests to different handlers based on specified patterns.
By default, the HTTP server in Go listens on port _______.
- 443
- 80
- 8000
- 8080
By default, the HTTP server in Go listens on port 8080. This is the default port for HTTP servers in Go, unless explicitly specified to listen on a different port.
Which HTTP status code indicates that a request was successful?
- 200
- 404
- 500
- 302
The correct option is 200. HTTP status code 200 indicates that the request was successful. It is commonly used for successful GET requests.
The _______ function in Go is used to append elements to a slice.
- append
- copy
- len
- make
The append() function in Go is used to append elements to a slice. It takes a slice and one or more elements as arguments and returns a new slice with the appended elements. This function is essential for dynamically growing slices.
How can you improve code coverage in a software project?
- Increase the diversity of input data
- Prioritize critical areas for testing
- Refactor code for better testability
- Write comprehensive test cases
Improving code coverage involves writing comprehensive test cases that cover various scenarios and edge cases. Refactoring code to make it more testable can also contribute to better coverage. Increasing the diversity of input data used in testing can uncover corner cases. Prioritizing critical areas for testing ensures that important functionalities are thoroughly tested.