Building a microservice

How to create a basic microservice? What technologies to use?

Transcript

1. Julián Espinel Building a microservice 2015-05-23
2. Agenda 1. What is a microservice? (Fast!) 2. Let's build a microservice 3. Continuous Integration (CI) 4. Deploying in DigitalOcean 5. Q&A 6. References
3. 1. What is a microservice? "Designing software applications as suites of independently deployable services." Martin Fowler
4. 1. What is a microservice?
5. 1. What is a microservice? Each service: 1. Responsible for a business capability. 2. Run in its own process. 3. Independently deployable.
6. 1. What is a microservice? Benefits: Technical
7. 1. What is a microservice? Challenges: Technical
8. 1. What is a microservice? Benefits: Management
9. 2. Let's build a microservice
10. 2. Let's build a microservice Basic CRUD microservice of movies. 1. Create a movie 2. Read (find) a movie 3. Update a movie 4. Delete a movie
11. 2. Let's build a microservice { "Title": "The Matrix", "Year": "1999", "Rated": "R", "Released": "31 Mar 1999", "Runtime": "136 min", "Genre": "Action, Sci-Fi", "Director": "Andy Wachowski, Lana Wachowski", "Writer": "Andy Wachowski, Lana Wachowski", "Actors": "Keanu Reeves, Laurence Fishburne, Carrie-Anne Moss, Hugo Weaving", "Plot": "A computer hacker learns from mysterious rebels about the true nature of his reality and his role in the war against its controllers.", "Language": "English", "Country": "USA, Australia", "Awards": "Won 4 Oscars. Another 34 wins & 39 nominations.", "Poster": "http://ia.media-imdb.com/images/M/MV5BMTkxNDYxOTA4M15BMl5BanBnXkFtZTgwNTk0NzQx MTE@._V1_SX300.jpg", "Metascore": "73", "imdbRating": "8.7", "imdbVotes": "1023621", "imdbID": "tt0133093", "Type": "movie", "Response": "True" }
12. 2. Let's build a microservice What are we going to need? 1. HTTP server to expose the API to the world. 2. A DB to store the movies info. 3. Tests to make Continuous Integration. 4. Be able to deploy the system independently.
13. 2. Let's build a microservice How?
14. 2. Let's build a microservice Dropwizard
15. 2. Let's build a microservice Dropwizard is a Java framework for developing ops-friendly, high-performance, RESTful web services. http://www.dropwizard.io
16. 2. Let's build a microservice Dropwizard Nothing more than a set of great libraries. Jackson Metrics
17. 2. Let's build a microservice A Dropwizard microservice API Domain Persistence
18. 2. Let's build a microservice Let's write some code! Source code: https://github.com/julianespinel/movies
19. 3. Continuous Integration
20. 3. Continuous Integration
21. 3. Continuous Integration "Continuous Integration doesn’t get rid of bugs, but it does make them dramatically easier to find and remove." Martin Fowler
22. 3. Continuous Integration How?
23. 3. Continuous Integration
24. 3. Continuous Integration
25. 4. Deploying in DigitalOcean
26. 4. Deploying in DigitalOcean Steps: 1. Create an account 2. Create a droplet 3. Provision that droplet (We can do this effectively with docker, may be in other talk!) 4. Install Jenkins 5. Configure Jenkins 6. Pull our microservice code 7. Do continuous integration (CI) 8. Build the microservice 9. Deploy the microserice 10. Use it from your browser
27. 4. Deploying in DigitalOcean Let's do it!
28. 5. Q&A
29. 6. References 1. http://martinfowler.com/articles/microservices.html 2. http://www.thoughtworks.com/insights/blog/microservices-nutshell 3. http://sanderhoogendoorn.com/blog/index.php/microservices-the-good-the- bad-and-the-ugly/ 4. http://microservices.io/patterns/monolithic.html 5. http://martinfowler.com/articles/continuousIntegration.html 6. http://martinfowler.com/bliki/ContinuousDelivery.html 7. http://www.dropwizard.io/ 8. https://jenkins-ci.org/ 9. https://www.digitalocean.com/