(Course content is significant for job reference. The course focuses on JAVAEE enterprise-level intelligent logistics. The course introduces the whole process of project development in detail, and is especially suitable for adding or subtracting project experience. Course content includes project overview and environment construction, Apache Druid, data ingestion, vehicle track service, j2cache multi-level cache, declarative cache, distributed lock, distributed lock implementation, Redisson, cargo type management, etc...)