Microservices Runtimes
- 1. munz & more Microservices Runtimes OTN LatAm Tour / August 2017 Dr. Frank Munz
- 2. 2 Frank Munz • Founded munz & more in 2007 • 17 years Oracle Middleware, Cloud, and Distributed Computing • Consulting and High-End Training • Wrote two Oracle WLS and one Cloud book
- 4. Microservices Developing a single application as • a suite of small services • each running in its own process / owns it‘s data • communicating with lightweight mechanisms (Definition: M. Fowler / J. Lewis) https://martinfowler.com/articles/microservices.html
- 5. Frank Munz / OTN Latam 2016 #5 Service owns its data Less enterprise, more application centric Continuous Unlocking
- 6. How to Model? munz & more #6
- 7. „… consider starting monolithic first …” munz & more #7 Sam Newman:
- 8. Eric Evans describes “bounded contexts” in his DDD book. munz & more #8 published 2003
- 9. How Big is Micro? 4950 Calories munz & more #9
- 10. How Big is Micro? munz & more #10 Martin Fowler (quotes Amazon):
- 11. We understand efficient teams munz & more #11
- 12. Picture this … String encrypt (String input) 10 Mio USD 3 people or 30 people? munz & more #12
- 14. Communication Overhead Rough approximation: network call / local call munz & more #14
- 15. Communication Overhead Rough approximation: 0,003 s / 10^-9 s munz & more #15
- 16. Communication Overhead 3.000.000 x munz & more #16
- 17. What the Experts say (A. Cockroft) munz & more #17 https://read.acloud.guru/evolution-of-business-logic-from-monoliths-through-microservices-to-functions-ff464b95a44d Recommended read:
- 18. Successful Microservices! • Uber, Netflix etc. • Fully automated CI / CD • Automated testing • Sometimes polyglot • Top notch devops teams • Large scale, single purpose apps • Extensive monitoring munz & more #18
- 22. ACCS • Polyglot: Java, node.js, PHP, Python and Ruby • Java: Upload compiled zipped Java classes + JSON file with start command • Easy to deploy and operate • Lightweight: deployments run in containers Polyglot, easy to use microservices runtime
- 23. Java CS
- 24. Create JCS munz & more #24
- 25. Java CS • Multi-module deployment is not a microservice architecture. • WebLogic Partitions: – share same JVM… – Dependancy on admin server • Standalone Multi-server topologies could serve as microservices runtime – Full Java EE -> heavy infrastructure / footprint – Licensing munz & more #25 WLS a.war b.war a.war WLS P1 P2 a.war WLS WLS b.wara.war Multi module deployment WebLogic Partitions Multi-server topology Not really a microservices runtime
- 26. WebLogic Microservice Edition? It should be • Single instance • No domain • No cluster • Lightweight Stay tuned … munz & more #26
- 28. Welcome Mini J Artesania Raspi cluster runs • Docker • Docker Swarm • Kubernetes Live hacking session at Oracle CODE 2017 CDMX
- 29. DIY Raspi Docker Cluster munz & more #29 Component Price Raspi 4x 38€ Micro SD 4x 11€ Power 28€ Wifi 22€ Case 30€ Wires 10€
- 30. Kubernetes
- 31. Google Kubernetes munz & more #31
- 32. Docker Swarm
- 33. Docker Swarm munz & more #33
- 34. Swarm vs. Kubernetes Swarm … • Wasn’t impressive when released, but this has changed • Is easier to understand and to operate • Covers a lot of what K8s does • Only secure mode – automatic TLS certs • Is built-in and tightly linked to Docker API munz & more #34 Docker Swarm & K8s: flexible microservices RT, but bring operational complexity
- 36. OCCS munz & more #36
- 37. OCCS • OCCS = Oracle’s container cloud service • Abstracts away complexity of Kubernetes or Docker Swarm – Neither based on Swarm nor Kubernetes • Uses service concept like in Swarm • Integrates with Docker Hub, Wercker, Developer CS • Allows deployment of stacks • PaaS: Very easy to use (e.g. docker run …) munz & more #37 Docker based microservices runtime. Easier to operate than Swarm or Kubernetes.
- 38. Function as a Service AWS Example used here. FaaS was announced at OOW 2016.
- 39. Edit Code / Upload munz & more #39 event: event passed to function context: runtime context callback: optional return (or null)
- 40. Definition: Function as a Service • Auto scaling • True pay per use • Stateless • Event based munz & more #40 Definition • Choose memory -> compute power • Using container tech Characteristics
- 41. FaaS vs. K8s Microservices FaaS fulfills M. Fowler’s microservices definition munz & more #41 AWS Lambda compared to Docker with Kubernetes ✅ Benefits of FaaS - serverless - zero config auto scaling - true pay per use -> higher abstraction Limits of FaaS - language/framework choice - resource limits - execution time / size - vendor lock-in -> reduced flexibility
- 42. munz & more #42 Is 𝛌 the new μ ? FaaS: Fullfill microservices criteria. Low price, automatic scaling. Vendor lock-in?
- 43. There is more needed to succed with microservices ...
- 44. 1.) Your Organization Conway’s Law
- 45. 2.) Automation and Monitoring • Developer Cloud Service – Builds and runs deployments for ACCS, JCS • Wercker (free!) – Provisions software in Docker Containers munz & more #45
- 46. Wercker • Recently acquired by Oracle • Pipelines execute steps on code – Pipelines == series of steps – Execute inside Docker container • Workflows – chained and branched pipelines – Represented as wercker.yaml in github • Quickly provision ready to run container infrastructure – Connects to github for source – Push images to Docker hub (or any registry) – Restart OCCS via webhooks munz & more #46
- 48. Microservices Runtimes Oracle JCS Oracle ACCS Swarm Kubernetes Oracle OCCS FaaS Docker Polyglot No Yes Yes Yes Yes Yes Size infrastructure L/XL S S S S XS Complexity L S M XL S XS Elasticity auto (complex) easy scale scale scale easy scale auto Stateless No (SLSB) (Yes) Yes Yes Yes Yes Event based No (JMS) No No No No Yes
- 49. TL;DR #microservices #runtimes Tradeoff: flexibility vs simplicity / ACCS is easy, lightweight & polyglot / Docker: Swarm vs Kubernetes vs OCCS / FaaS: true pay per use & automatic scale & stateless / 𝛌 could be the new µ! @frankmunz
- 50. www.linkedin.com/in/frankmunz/ www.munzandmore.com/blog facebook.com/cloudcomputingbook facebook.com/weblogicbook @frankmunz youtube.com/weblogicbook -> more than 50 web casts Don’t be shy J
- 51. • Graphics on title page by M. Fowler https://martinfowler.com/articles/microservices/images/sketch.png