A Walking tour of Springdom in 2025

hi, Spring fans! The full video in which this code was introduced is here!

demo flow

• desk check: IDEs, jvms, banner.txt, devtools, direnv, sdkman, etc.
• data oriented programming
• dependency injection
• Spring Framework
• BeanPostProcessors, BeanFactoryPostProcessors
• event listeners
• Boot
• auto-configuration
• containers
• testing
• AOT/GraalVM
• Environment
• Spring Cloud Config Server
• Spring Batch batch (config client, postgresql, jdbc, batch)
  • config
  • move ~/Desktop/talk/dogs-simplified-*sql to src/main/resources/schema.sql
  • read config from ~/Desktop/talk/dogs.csv into dogs table
  • Job with incremented
  • Step with <Dog,Dog>chunk, reader, writer
  • FlatFileItemReader<Dog> with linesToSkip, resource, name, fieldSetMapper, delimited, names
  • JdbcBatchItemWriter<Dog> with dataSource, assertUpdates, itemPreparedStatementSetter, sql
• JDBC and JdbcClient - implement a simple repository using records and JdbcClient
• Flyway/Liquibase
• Spring Data (JDBC)
• Spring MVC
• Spring Modulith
  • outbox pattern
  • testing
  • externalization (add spring-modulith-events-messaging)
• Spring Integration
• Spring AMQP
  • define Queue, Binding, and Binding
• Observability
  • actuator
  • micrometer
  • SBOMs
  • git-commit-id
  • health check
• Spring AI
  • ChatModel && ChatClient
  • user/system
  • chat memory
  • RAG
    • vector stores
    • EmbeddingModel
  • tools: schedule an appointment to adopt a dog
  • MCP
• virtual threads
• Spring GraphQL
• Spring gRPC
• Spring Shell
  • build a simple client that uses RestClient to invoke all the customers
  • do this before the security!
• Spring Security & Auth Server
  • username/passwords
  • security filter chains
  • password management with PasswordEncoder
  • webauthn
  • OTT
  • with: formLogin, webauthn, and with(authorizationServer())
• OAuth Resource Servers
• Spring Authorization Server
• OAuth Clients
• Spring Cloud Config Client
• Spring Cloud Gateway
  • TokenRelayFilterFunctions
• Spring Boot