@Secured annotation in Spring Boot - Performance & Optimization

Performance: @Secured annotation

MEDIUM IMPACT

This annotation affects server-side request handling speed and security checks, impacting response time and user interaction delay.

Securing methods with role-based access control

Spring Boot

@Secured("ROLE_ADMIN")
public void process() {
  // method logic
}

Restricting to a single role reduces the number of security checks, improving request handling speed.

📈 Performance Gainreduces security check overhead, improving INP slightly

Securing methods with role-based access control

Spring Boot

@Secured({"ROLE_ADMIN", "ROLE_USER"})
public void process() {
  // method logic
}

Using @Secured with multiple roles causes Spring Security to check if the user has any one of the roles, which may add overhead per request.

📉 Performance Costadds small processing delay per request due to multiple role checks

Performance Comparison

Pattern	Security Checks	Request Delay	User Interaction Delay	Verdict
Multiple roles in @Secured	Multiple role checks	Increased by ~1-3ms	Slightly higher INP	[!] OK
Single role in @Secured	Single role check	Minimal delay	Better INP	[OK] Good

Rendering Pipeline

When a secured method is called, Spring Security intercepts the call to verify roles before executing the method logic. This adds a security check stage before business logic execution.

→Request Handling

→Security Interception

→Method Execution

⚠️ BottleneckSecurity Interception stage due to role verification

Core Web Vital Affected

INP

This annotation affects server-side request handling speed and security checks, impacting response time and user interaction delay.

Optimization Tips

1Minimize the number of roles specified in @Secured to reduce security check overhead.

2Cache security context to avoid repeated role verification on each request.

3Use server-side security checks efficiently to maintain good interaction responsiveness (INP).

Performance Quiz - 3 Questions

How does using multiple roles in @Secured affect request handling?

A It has no effect on performance

B It increases the number of security checks, adding slight delay

C It reduces security checks and speeds up requests

D It blocks rendering on the client side

DevTools: Network and Performance panels

How to check: Use Network panel to measure response time; use Performance panel to record and analyze request handling and interaction delays.

What to look for: Look for increased server response time and longer interaction to next paint (INP) when multiple roles are checked.