T.I.L_220814

What’s New for Today

1. Spring Boot + AWS Webservice
   • nginx setting
   • nginx.conf
   • modified aws ec2 security group
2. Algorithm
   • q1309
   • q21608
3. Java Spring Framework
   • recap
   • Parameter propagation problem (<– Too much modifications)
   • Field Based LogTracer
     • Keep TraceId as singleton
     • concurrency problem
   • ThreadLocal based Log Tracer
     • keep TraceId within threadlocal storage (each threads access to seperate storage)
   • alternative solutions: using request scope beans