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https://github.com/m-thirumal/spring-cloud-gateway
Spring cloud gateway with Rate Limiter (Redis) [Service denial], Circuit Breaker (Resilience4J), Load balancing, encryption and decryption, etc.
https://github.com/m-thirumal/spring-cloud-gateway
api-throttling circuit-breaker encryption-decryption loadbalancing microservice rate-limiter recaptcha-v3 resilience4j router springboot2 springcloudgateway throttling
Last synced: about 2 months ago
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Spring cloud gateway with Rate Limiter (Redis) [Service denial], Circuit Breaker (Resilience4J), Load balancing, encryption and decryption, etc.
- Host: GitHub
- URL: https://github.com/m-thirumal/spring-cloud-gateway
- Owner: m-thirumal
- Created: 2020-02-27T14:00:52.000Z (almost 5 years ago)
- Default Branch: master
- Last Pushed: 2024-08-26T12:18:38.000Z (5 months ago)
- Last Synced: 2024-08-26T14:34:59.362Z (5 months ago)
- Topics: api-throttling, circuit-breaker, encryption-decryption, loadbalancing, microservice, rate-limiter, recaptcha-v3, resilience4j, router, springboot2, springcloudgateway, throttling
- Language: Java
- Homepage:
- Size: 1.06 MB
- Stars: 15
- Watchers: 3
- Forks: 2
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# spring-cloud-gateway
## Features:
* Rate Limiter
* Circuit Breaker
* Encryption and Decryption of request and response body
* Google Re-Captcha validation at gateway for all microservices
* TLS/SSL
## Prerequisite - To Run the following projects to get the proper result
1. [Eureka Server](https://github.com/M-Thirumal/eureka-server)
2. [Eureka Client 1 / MicroServices 1](https://github.com/M-Thirumal/eureka-client-2)
3. [Eureka Client 2 / MicroServices 2](https://github.com/M-Thirumal/eureka-client-1)
4. [Redis](https://m-thirumal.github.io/installation_guide/#/redis/install)
## To Create jar
`mvn clean package -DskipTests=true`
## Run as jar from terminal
`java -jar target/spring-cloud-gateway-0.0.1-SNAPSHOT.jar`
## Routing and Load balancer
## Encryption & Decryption
Encryption of request body and response body is implemented in global filter and in route 2.
```
f.filter(encryptDecryptFilter.apply(new EncryptDecryptFilter.Config()))
```
## Rate Limiter
i.e Service Denial
Redis is used for rate limiter, which is used for protecting application from API throttling (Service Denial)
## Circuit Breaker
Circuit Breaker has three states `Closed State, Open State, Half Open State`. The image below shows how the flow from one state to another changes.
1. The Circuit Breaker will be in the `Closed state` when everything is running as expected when failure starts coming it waits until the set `threshold limit` is reached then goes to `Open state`.
2. While in `Open states` no calls will be going to failing remote service until certain wait time, then it goes to `Half-Open state`, in this stage reduced amount of calls goes to remote service to make sure the calls are successful, `IF` the calls are responding as `expected` it will go to `Closed state` or it goes back to `Open state` avoiding calls to failing remote service.
## Google Recaptcha
Google Recaptcha can be verified at gateway instead of verifying it in each microservices. Avoid code duplication
## TLS/SSL
To Enable SSL, add the following properties in the `yml` file and add the certificate in `.p12` format
```
server:
port: 9095
ssl:
enabled: true
key-store: classpath:keystore.p12
key-store-password: thirumal
key-store-type: PKCS12
key-alias: gateway
compression:
enabled: true
```
Get free SSL certificate from [Let's Encrypt](https://github.com/m-thirumal/installation_guide/blob/master/docs/TLS/let's_encrypt.md)
To Generate the `.p12` from `.pem` use the following commands
```
openssl pkcs12 -export -in fullchain1.pem -inkey privkey1.pem -out keystore.p12 -name gateway -CAfile chain1.pem -caname root
```