How do you optimize Spring Boot application performance?

Performance optimization strategies:\n\n1) Lazy initialization:\nspring.main.lazy-initialization=true\n\n2) Connection pooling:\nspring.datasource.hikari.maximum-pool-size=20\n\n3) Caching:\n@Cacheable("users")\npublic User findById(Long id) { }\n\n4) Async processing:\n@Async\npublic void processAsync() { }\n\n5) Profile-specific configs:\nspring.jpa.hibernate.ddl-auto=validate # prod\nspring.jpa.show-sql=false # prod\n\n6) JVM tuning:\n-Xms512m -Xmx2g -XX:+UseG1GC