https://github.com/kh77/spring-boot-multi-db

Distributed transaction using mysql and postgres
https://github.com/kh77/spring-boot-multi-db

java mysql postgres spring-boot

Last synced: 3 months ago
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Distributed transaction using mysql and postgres

• Host: GitHub
• URL: https://github.com/kh77/spring-boot-multi-db
• Owner: kh77
• Created: 2020-07-12T20:58:12.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2022-06-04T19:04:10.000Z (about 4 years ago)
• Last Synced: 2023-03-06T22:09:10.140Z (over 3 years ago)
• Topics: java, mysql, postgres, spring-boot
• Language: Java
• Homepage:
• Size: 53.7 KB
• Stars: 7
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# spring-boot-multiple-db

 Register multiple DB like MySql and PostgreSql and how to handle distributed transaction of multiple DB and roll-back.

 

 

## Database script

1) MySQL Script and (FooDbConfig.java) which has configuration

CREATE schema foo;

CREATE TABLE foo.foo_data 

( id INT NOT NULL AUTO_INCREMENT,  name VARCHAR(45) NULL, PRIMARY KEY (id));

--------------------------------------------

2) PostgreSQL Script and (BarDbConfig.java) which has configuration with bar prefix in application.properties

CREATE DATABASE bar

    WITH 

    OWNER = postgres

    ENCODING = 'UTF8'

    CONNECTION LIMIT = -1;

    

    

CREATE TABLE public.bar_data

(

    id bigserial,

    name character varying(500),

    PRIMARY KEY (id)

)

WITH (

    OIDS = FALSE

);

ALTER TABLE public.bar_data

    OWNER to postgres;

    

-----------------------------------------------------------

# Manage Multiple DB transaction and roll-back

  This 'ChainedTransactionManagerConfig' class register both transaction manager DB and it will roll-back when one transaction is failed

  

  Check 'FooService' class which has 'insert' method and hit below URL to save data

----------------------------------------------------------- 

## URL to save data from Postman 

- Save data in both DB

- Http Method : GET

- URL : localhost:8080/save/helloworld

- Response body : OK

## Uncomment RuntimeException from BarService.java

- try above url then it will roll-back both transaction