Como manter a disponibilidade dos seus microservices através do monitoramento de métricas

Não é segredo que os microservices elevam muitas coisas no seu projeto: entre elas, a complexidade de gerenciamento.
Imagine que cena linda: vários serviços parando em efeito dominó, e você sem saber onde começou, o que aconteceu, e quem será o próximo a cair. Pesadelo!
Para isso existem as métricas e os processos de monitoramento. Com eles, você não precisa mais ser “reativo” (#trocadilhoalert). Ao contrário, pode se preparar para o que der e vier.
Junte-se a nós para entender como usar métricas para manter seus microservices disponíveis e como isso pode ser feito utilizando Helidon.

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1. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 1
2. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 2 Como manter a disponibilidade de microservices através do monitoramento de métricas Elder Moraes | @elderjava Developer Advocate Novembro, 2019
3. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | Safe Harbor Statement The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, timing, and pricing of any features or functionality described for Oracle’s products may change and remains at the sole discretion of Oracle Corporation.
4. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 5
5. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | Métricas 6
6. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | Métrica é uma medida para avaliar, controlar e/ou selecionar quantitativamente: uma pessoa, um processo, um evento ou uma instituição 7
7. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | Métrica vs Health Check 8
8. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | RockyBalboaService 9
9. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 10 • Força do soco: 100% • Sangramento: 0 ml/s • Visão: 100% • Nível suor: 1 ml/s • Confiança: 10 • Pronúncia: Adrian! • Força do soco: 0,5% • Sangramento: 100 ml/s • Visão: -10% • Nível suor: 2000 ml/s (baldes) • Confiança: 0 • Pronúncia: Ãnhãnãããnnnn
10. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | Microprofile: 3 tipos de métricas • base – JVM – Threads – Thread Pools – Classloading – SO • vendor • application 11
11. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 12 JSON PROMETHEUS REST API
12. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 13 REST API /metrics /metrics/base /metrics/vendor /metrics/application
13. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 14 Formato Gauge JSON
14. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 15 Formato Counter JSON
15. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 16 Formato Meter JSON
16. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 17 Formato Histogram JSON
17. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 18 Formato Timer JSON
18. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | Todos possuem equivalentes no formato Prometheus 19
19. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | Código orientado a métricas 20
20. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 21 Annotation
21. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 22 Annotation Aplica-se a Descrição @Counted M, C, T Contabiliza a quantidade de invocações do objeto anotado @Gauge M Medidor que exibe o valor do objeto anotado @Metered M, C, T Mede a frequência de invocações do objeto anotado @Timed M, C, T Mede o tempo de duração do objeto anotado (C=Constructor, M=Method, T=Type)
22. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | Helidon 23
23. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | • É um conjunto de APIs para desenvolvimento de microservices • Open Source (Apache 2.0) • Helidon SE: microframework • Helidon MP: MicroProfile 24
24. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 25
25. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 26 Arquitetura
26. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 27 Código Helidon SE
27. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 28 Código Helidon MP
28. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | DEMO TIME!!! 29
29. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | @elderjava book.eldermoraes.com
30. Copyright © 2019, Oracle and/or its affiliates. All rights reserved. | 32