Have you had experience implementing and configuring security mechanisms in Spring-based applications?

Yes, experience in implementing and configuring security in Spring-based applications usually involves using Spring Security — a powerful and flexible framework for authentication and authorization.

Main steps:

• Adding the Spring Security dependency to the project.
• Configuring access rules to URLs and methods (e.g., through HttpSecurity in the configuration class).
• Setting up authentication — you can use in-memory users, a database, LDAP, etc.
• Implementing custom services for loading user data (UserDetailsService).
• Configuring mechanisms for protection against CSRF, CORS, sessions.

Example configuration in Java:

@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
                .antMatchers("/public/**").permitAll()
                .anyRequest().authenticated()
            .and()
            .formLogin();
    }
}

This approach allows flexible management of application security.