server:                                                                                                                                                                
  tomcat:                                                                                                                                                              
    threads:                                                                                                                                                           
      max: 400          # 200 → 400                                                                                                                                    
      min-spare: 50                                                                                                                                                    
    max-connections: 10000                                                                                                                                             
    accept-count: 200                                                                                                                                                  
                                                                                                                                                                       
spring:                                                                                                                                                                
  datasource:                                                                                                                                                          
    hikari:                                                                                                                                                            
      maximum-pool-size: 50   # 10 → 50                                                                                                                                
      connection-timeout: 5000                                                                                                                                         
  data:                                                                                                                                                                
    redis:                                                                                                                                                             
      lettuce:                                                                                                                                                         
        pool:                                                                                                                                                          
          max-active: 50      # 8 → 50