Building a modern SaaS in 2020
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The document outlines the architecture and practices for building a modern SaaS application in 2020, focusing on aspects like language evaluation, microservices, and deployment strategies. It discusses tools like Docker, Kubernetes, and Helm for application deployment and observability, highlighting the benefits of using a monorepo structure for ease of management. Key architectural principles such as multi-tenancy, logging mechanisms, and hierarchical data management are also addressed.
Building a modern SaaS in 2020
- 1. Building a modern SaaS in 2020 Nikolay Stoitsev, Engineering Manager @ Halo DX
- 5. Language Architecture Repo Structure Builds Running in Production Observability Multitenancy
- 6. Language Architecture Repo Structure Builds Running in Production Observability Multitenancy
- 9. Node.js Can build with special OpenSSL
- 10. Java Package with verified implementation of cryptographic algorithms
- 13. DICOM
- 14. Imaging Center
- 17. HL7 DICOM
- 18. Java and Spring Boot
- 19. Angular
- 20. Language Architecture Repo Structure Builds Running in Production Observability Multitenancy
- 26. Monolith
- 28. 6 services
- 29. Hexagonal Architecture Web Adapter Messaging Adapter Input Port Input Port Biz Logic Output Port Output Port Persistence Adapter Messaging
- 30. Language Architecture Repo Structure Builds Running in Production Observability Multitenancy
- 32. Mono Repo Easily introduce and refactor global features Ease code sharing and reuse Simple dependency management Flexible team boundaries and code ownership Collaboration across teams Atomic commits across services
- 33. Build System Bazel ● Fast and incremental builds ● One tool to build multiple languages ● Extensible ● Google, Pinterest, Uber, Stripe Buck ● Fast and incremental builds ● One tool to build multiple languages ● Helps you better understand your dependencies ● Facebook, Airbnb
- 35. Multi-Project Builds in Gradle ● One root project ● One subproject for each service ● One subproject for shared libs ● https://docs.gradle.org/current/userguide/multi_project_builds.html
- 36. Multi-Project Builds in Gradle
- 38. Gradle wrapper for front-end builds and running tests
- 39. Language Architecture Repo Structure Builds Running in Production Observability Multitenancy
- 40. Separate Dockerfile for each service
- 41. Can have one Docker Compose for everything
- 43. Why Nexus? Can store and distribute Maven/Java, npm, Helm, Docker Widely adopted Single source of truth for every component Easy to work with
- 48. Language Architecture Repo Structure Builds Running in Production Observability Multitenancy
- 50. Why Kubernetes? Deployment Scaling Self-healing Inter-service communication Storage orchestration Scalable and battle tested
- 51. Great for engineers ● Each service is accessed via a single domain ● Logs are easy to read ● A lot of materials on how to learn it
- 53. Monitoring and Grafana out of the box
- 54. Configuring a service in Kubernetes ● Deployment ● Service ● Config Map ● Service Account ● RBAC ● Pod disruption budget ● ....
- 56. Helm ● Abstraction over k8s that simplifies working with it ● The building block in helm is called a helm chart ● Help you define, install, and upgrade applications in k8s
- 57. How to work with Helm ● Search for “{technology} helm chart” ● Download helm chart ● Update values.yaml ● $ helm install {release-name} {chart-name} --set {var}={val}
- 62. Language Architecture Repo Structure Builds Running in Production Observability Multitenancy
- 63. SLF4J backed by Log4j2 https://github.com/qos-ch/slf4j
- 64. Backend logging EFK - Elasticsearch, Fluentd, Kibana Pod Pod Pod
- 65. Backend logging EFK - Elasticsearch, Fluentd, Kibana Pod Pod Pod Fluentd Fluentd Fluentd
- 66. Backend logging EFK - Elasticsearch, Fluentd, Kibana Pod Pod Pod Fluentd Fluentd Fluentd Elasticsearch
- 67. Backend logging EFK - Elasticsearch, Fluentd, Kibana Pod Pod Pod Fluentd Fluentd Fluentd Elasticsearch Kibana
- 69. Front End Logging Library
- 70. Front End Logging Library
- 71. Front End Logging front end lib front end lib
- 72. Front End Logging Backend Service Backend Service front end lib front end lib
- 73. Front End Logging Backend Service Backend Service Fluentd Fluentd front end lib front end lib
- 74. Front End Logging Backend Service Backend Service Fluentd Fluentd Elasticsearch Kibana front end lib front end lib
- 75. Language Architecture Repo Structure Builds Running in Production Observability Multitenancy
- 77. Materialized path (1) Org (2) East (3) West (4) Sales (5) Front Desk (6) Sales (7) Front Desk ID Path Name 1 1/ Org 2 1/2/ East 3 1/3/ West 4 1/2/4 Sales East 5 1/2/5 Front Desk East 6 1/3/6 Sales West 7 1/3/7 Front Desk West
- 78. Closure table (1) Org (2) East (3) West (4) Sales (5) Front Desk (6) Sales (7) Front Desk ID Name 1 Org 2 East 3 West 4 Sales East 5 Front Desk East 6 Sales West 7 Front Desk West Ancestor Descendant 1 2 1 3 1 4 1 5 1 6 1 7 2 4 2 5 3 6 3 7 4 Null
- 79. Keeping hierarchy and data separated (1) Org (2) East (3) West (4) Sales (5) Front Desk (6) Sales (7) Front Desk ● Each records get a tag - 1, 2, 3, etc. ● Each tag points to a node in the tree ● Tag hierarchy is loaded separately ● Queries are decorated with OR statements to match by tag
- 80. Benchmark
- 81. Benchmark
- 82. Language Java and Spring Boot
- 83. Language Architecture Java and Spring Boot Microservices
- 84. Language Architecture Repo Structure Java and Spring Boot Microservices Monorepo
- 85. Language Architecture Repo Structure Builds Java and Spring Boot Microservices Monorepo Gradle and Docker
- 86. Language Architecture Repo Structure Builds Running in Production Java and Spring Boot Microservices Monorepo Gradle and Docker Kubernetes
- 87. Language Architecture Repo Structure Builds Running in Production Observability Java and Spring Boot Microservices Monorepo Gradle and Docker Kubernetes EFK stack
- 88. Language Architecture Repo Structure Builds Running in Production Observability Multitenancy Java and Spring Boot Microservices Monorepo Gradle and Docker Kubernetes EFK stack Separate hierarchy and data
- 89. Thank you! Q&A Nikolay Stoitsev Engineering Manager at Halo DX