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15 Ways to Optimize Spring Boot for the Cloud ☁️

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15 Ways to Optimize Spring Boot for the Cloud ☁️ 15 Ways to Optimize Spring Boot for the Cloud ☁️ Billy Korando - @BillyKorando Developer Advocate - IBM 17 Ways to Optimize Spring Boot for the Cloud ☁️ Billy Korando - @BillyKorando Developer Advocate - IBM Keep Current http://ibm.biz/javanewsletter https://cloud.ibm.com/docs/java ️ ️️ ️ ️ Optimization Factors ️ Observability Improvement ️ ️ Resiliency EfficiencyEfficiency ️️ ️ ️️ Scalability Security ️ Sources/Additional Reading 1. You Don’t Have to Do Microservices to be on the Cloud ORDERS ADDRESSES FULFILLMENT ITEMS ORDER USER HISTORY The Distributed Monolith 1. You Don’t Have to Do Microservices to be on the Cloud Challenges with Microservices: Distributed Systems Have Emerging Problems Require Organizational Change Deep Understanding of DDD and Your Domain 1. You Don’t Have to Do Microservices to be on the Cloud With Monoliths You Can: Use Spring Boot Can be CI/CD 2. Use the Services Provided by Your Cloud Platform ☁️ 2. Use the Services Provided by Your Cloud Platform ☁️ 3. Spring Cloud Sleuth for Request Tracing and Correlation 3. Spring Cloud Sleuth for Request Tracing and Correlation <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-sleuth</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-zipkin</artifactId> </dependency> 3. Spring Cloud Sleuth for Request Tracing and Correlation Trace ID Span ID service1,2485ec27856c56f4,2485ec27856c56f4 service2,2485ec27856c56f4,9aa10ee6fbde75fa service3,2485ec27856c56f4,1210be13194bfe5 service2,2485ec27856c56f4,9aa10ee6fbde75fa service4,2485ec27856c56f4,1b1845262ffba49d service2,2485ec27856c56f4,9aa10ee6fbde75fa service1,2485ec27856c56f4,2485ec27856c56f4 3. Spring Cloud Sleuth for Request Tracing and Correlation Time well spent Time poorly spent Project Dapper 4. Use and Customize Spring Boot Actuator <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> /health /info /metrics /prometheus /configprops And many more! https://docs.spring.io/spring- boot/docs/current/reference/html/production-ready-endpoints.html 4. Use and Customize Spring Boot Actuator Health Default, scans for various datasources and caches Can also be customized: 5. Use Pools to Meter Resource Usage ️ ️ 5. Use Pools to Meter Resource Usage ⏱ 6. Use Circuit Breakers to Limit Cascading Failures ️ ️ 6. Use Circuit Breakers to Limit Cascading Failures @HystrixCommand(doFallback) V ️ 7. Be Stateless When Possible ️ 8. Use Spring Cloud Contract to Validate Contracts Between Services ITAddBooking ️ POST /bookings POST { http://dev/bookings customerId : 1 roomNumber : 100 } Person Client Person️ Service 8. Use Spring Cloud Contract to Validate Contracts Between Services Bookings Contract 8. Use Spring Cloud Contract to Validate Contracts Between Services ITAddBooking ️ POST /bookings POST { http://localhost/bookings customerId : 1 roomNumber : 100 } Person Client Person Service Contract 9. Use TestContainers for Other Services ITAddPersonDB ️ INSERT INTO PERSONS PERSONS … TABLE ️ Person Client Dev Database 9. Use TestContainers for Other Services ITAddPersonDB ️ INSERT INTO PERSONS PERSONS … TABLE Person Client Local Docker Database 10. Have a Continuous Delivery Pipeline to Production ️ ️ ️️ ☁️ Code Repo ️ ️ ️ ️ Build Server 11. Keep Dependencies Up-to-Date The Code You Wrote Security patches The Code Performance enhancements Your Code Feature enhancements Runs On 12. Use Eclipse OpenJ9 Hotspot GraalVM Corretto OpenJ9 12. Use Eclipse OpenJ9 Memory savings of ~40% Near same throughput Totally Free to Use Eclipse Public License 2.0 Apache License 2.0 Download at: https://adoptopenjdk.net/ More info: https://www.eclipse.org/openj9/ 13. Use Eclipse OpenJ9 class sharing The read only part position independent ROMClass So OpenJ9 splits the class into two parts Classfile The stateful Not a great way part to store class information J9RAMClass 13. Use Eclipse OpenJ9 class sharing JVM 1 JVM 2 JVM 3 13. Use Eclipse OpenJ9 class sharing JVM 1 JVM 2 JVM 3 All these classes are identical 13. Use Eclipse OpenJ9 class sharing JVM 1 JVM 2 JVM 3 So let’s share them! 13. Use Eclipse OpenJ9 class sharing -Xshareclasses Enables class sharing -Xscmx=Xm Sets the size of the cache, default 300 MB https://developer.ibm.com/articles/eclipse-openj9-class-sharing-in-docker- containers/ https://developer.ibm.com/tutorials/j-class-sharing-openj9/ 14. Use Cloud Configuration for Zero-Downtime Config Changes ️ ️ ️ ️ Config Server Config Client 15. Tune Your Spring Boot Application ● Explode your jar ● Review which features you’re actually using ○ Actuator ○ spring.jmx.enabled=false ● Exclude unneeded dependencies ● Be on the latest version of Spring (Boot) ● Tune with JVM Args, e.g. –noverify ● Lazy load beans 15. Tune Your Spring Boot Application Spring Boot isn’t Memory Hungry 15. Tune Your Spring Boot Application https://spring.io/blog/2018/12/12/how-fast-is-spring https://www.youtube.com/watch?v=97UTDmonq7w 16. Use A/B Testing to Tune Performance { … } { … } 17. Introduce Chaos into Production ️ ️ 10:30AM ️ Review 1. You Don’t Have to do Microservices to be in the Cloud 2. Use the Services Provide by Cloud Platform for Monitoring 3. Use Spring Cloud Sleuth for Request Tracing and Correlation 4. Use and Customize Spring Boot Actuator 5. Use Pools to Meter Resource Usage 6. Use Circuit Breakers to Limit Cascading Failures 7. Be Stateless When Possible 8. Use Spring Cloud Contract to Verify Integration Points Between Services 9. Use TestContainers to Verify Integration Points Between Systems Review 10.Have a Continuous Delivery Pipeline to Production 11.Keep Dependencies Up-to-Date 12.Switch to Eclipse OpenJ9 13.Enable OpenJ9 Class Sharing 14.Use Cloud Configuration for Zero-Downtime Config Changes 15.Tune Your Spring Boot Application 16.Use A/B Testing to Measure Optimizations 17.Introduce Chaos into Production 15 Ways for to Optimize Spring Boot for the Cloud Q&A @BillyKorando [email protected] .
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