microservice

Microservice Authorization server - Resource Server - Gateway

Oauth2 server

Authentication server using asymmetric

Import database
Generate keypair

------------ Branch Master -----------------

Used Jwt token store. Token generated store in memory.

------------ Branch oauth2-server-jdbc -----------------

Used Jwt token store. Token generated store in database.

------------ Branch oauth2-server-jwt ------

Used Jwt token store. Token generated store in memory.

Resource server

Resource Service: Skeleton code for Resource Server
Order Service, Delivery Service,... is resource server

Registry

Eureka server

Gateway server

Gateway discovery service

Config

Spring cloud config for properties

Common

Common for Role Base Access Control
Common Util: Util method
Common Dto: DTO class
Common Entity: Entity mapping from database

Database

MySQL
Database per service
Transaction rollback following Sagas pattern
PostgreSQL: One database with multiple schemas
- database: postgreSQL
- schemas: delivery_db, auditor_db,...

kafka

zookeeper-server-start /usr/local/etc/kafka/zookeeper.properties & kafka-server-start /usr/local/etc/kafka/server.properties

Event driven

using Kafka or Rest : done

Delivery Service: Delivery changed status delivered send an event to Order Service: http://localhost:8766/delivery-service/v1/delivery/delivered

Order Service: delete order send an event to Delivery Service for cancel delivery http://localhost:8765/order-service/v1/order/6

Current code not fully adapt ACID in case update order or delivery status failure but event sent successful. To avoid this need apply OUTBOX pattern: event will save to database in table OUTBOX, use polling job (scheduler in spring boot) or debezium... send event to Kafka

Running

Step 1: Start config service

Step 2: Start Registry service

Step 3: Start Gateway service

Step 4: Start other services

Network (Service Mesh)

All request go through gateway:

A. External:

requests -> gateway -> services

B. Internal: 

Requests -> Gateway -> Services

Requests -> Services -> Services

Distributed Tracing

Open Zipkin: Running latest image docker run -d -p 9411:9411 openzipkin/zipkin. Data store in-memory

more version for zipkin: https://hub.docker.com/u/openzipkin

Admin UI: http://localhost:9411/zipkin/?serviceName=delivery-service&lookback=30m&endTs=1608301463449&limit=10

Exception Tracing

https://sentry.io

Log Tracing

ELK

Metrics

Spring actuator:

https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready-features.html

docker inspect container_id

http://{container_ip}:8766/delivery-service/actuator/prometheus

Prometheus:

/devoops/prometheus.yml

docker run --name=prometheus -p 9090:9090 -v /Users/nguyendangtuan/Documents/Project/microservice/devoops/prometheus.yml:/etc/prometheus/prometheus.yml prom/prometheus

http://localhost:9090/targets