Understanding the Differences Between 'java -server' and 'java -client'

What are the practical differences between using 'java -server' and 'java -client'?

"java -server -jar myapp.jar" vs "java -client -jar myapp.jar"

The 'java -server' and 'java -client' options specify different mode settings for the Java Virtual Machine (JVM) regarding optimization strategies for performance and startup time. These flags are crucial when considering both throughput and latency of Java applications, especially in production environments.

// Example of running an application in different modes:
// Starting the application in server mode
java -server -jar myapp.jar

// Starting the application in client mode
java -client -jar myapp.jar

// Performance can vary based on the chosen settings.

Causes

• 'java -server' is optimized for long-running applications with a focus on throughput and overall performance.
• 'java -client' is designed for applications that require a faster startup time, beneficial for GUI applications and development environments.

Solutions

• Use 'java -server' for server-side applications or long-running processes that require higher performance on subsequent requests.
• Use 'java -client' for smaller applications or during the development phase where quick startup is desired.

Mistake: Choosing 'java -client' for a production web application.

Solution: Opt for 'java -server' mode to leverage better performance over time.

Mistake: Assuming both modes will yield similar performance without context.

Solution: Review the specifics of your application needs, like startup time vs. execution speed.