resilence4j+springboot2 circuit breaker is not opened

resilence4j+springboot2 circuit breaker is not opened - java

I am trying to use resilence4j in my current spring boot2 project.I have written the following implementation classes.Even though i hit 1000 times CB is not opened.Could anyone please help finding what i was doing wrong.
mainclass
#SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
Controller class
#RestController
public class DemoController
{
#Autowired
DemoService demoService;
#GetMapping("/search")
public String searchService()
{
return demoService.search();
}
}
Service class with circuit breaker:
#Component(value = "demoService")
public class DemoService
{
#CircuitBreaker(name = "demoService",fallbackMethod = "fallback")
public String search()
{
throw new HttpServerErrorException(HttpStatus.INTERNAL_SERVER_ERROR, "This is a remote exception");
}
public String fallback(Throwable throwable)
{
System.out.println("Entering fallback Method..........."+throwable.getMessage());
System.out.println("Circuit Breaker Opened");
return "Circuit Breaker Opened..";
}
}
application.yml
spring:
application.name: demo
jackson.serialization.indent_output: true
server:
port: 9080
management.endpoints.web.exposure.include: '*'
management.endpoint.health.show-details: always
management.health.diskspace.enabled: false
management.health.circuitbreakers.enabled: true
management.health.ratelimiters.enabled: false
info:
name: ${spring.application.name}
description: resilience4j demo
environment: ${spring.profiles.active}
version: 0.0.1
management.metrics.tags.application: ${spring.application.name}
management.metrics.distribution.percentiles-histogram.http.server.requests: true
management.metrics.distribution.percentiles-histogram.resilience4j.circuitbreaker.calls: true
#resilience4j.circuitbreaker.metrics.use_legacy_binder: true
resilience4j.circuitbreaker:
configs:
default:
registerHealthIndicator: true
slidingWindowSize: 10
minimumNumberOfCalls: 5
permittedNumberOfCallsInHalfOpenState: 3
automaticTransitionFromOpenToHalfOpenEnabled: true
waitDurationInOpenState: 5s
failureRateThreshold: 50
eventConsumerBufferSize: 10
instances:
demoService:
baseConfig: default
pom.xml
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>io.github.resilience4j</groupId>
<artifactId>resilience4j-spring-boot2</artifactId>
<version>1.5.0</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
<version>2.3.0.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</repository>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</pluginRepository>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
For testing i used postman with 1000 repeated requests.

Related

Spring gateway server won't start - java.lang.NoClassDefFoundError: org/springframework/core/metrics/ApplicationStartup

I'm trying to learn about Spring Gateway (how it is put together, how it works).
I'm following this tutorial here, and I run into an issue as I try to run the server. I haven't even done anything specific yet, outside of what this tutorial shows.
There is no mention of that issue on it, and this didn't help my case.
I'm not sure what I'm missing as the issue I'm running into didn't seem to be common.
Any help would be appreciated.
Here is my pom.xml :
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.7</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.container</groupId>
<artifactId>gateway</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>gateway</name>
<description>Gateway</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
</dependency>
<dependency>
<groupId>io.projectreactor</groupId>
<artifactId>reactor-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-gateway</artifactId>
<version>2.0.0.RC2</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
<finalName>gateway-app</finalName>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<releases>
<enabled>false</enabled>
</releases>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<releases>
<enabled>false</enabled>
</releases>
</pluginRepository>
</pluginRepositories>
</project>

spring boot config client could not load configuration from config server using bootstrap.properties

Spring boot config client could not load the configuration from config server.
bootstrap.properties
spring.application.name = eon-service
spring.cloud.config.uri=http://localhost:8888
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.7-SNAPSHOT</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>microservice-eon-service</groupId>
<artifactId>microservice-eon-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>microservice-eon-service</name>
<description>Microservice project for Spring Boot</description>
<properties>
<java.version>11</java.version>
<spring-cloud.version>2020.0.5-SNAPSHOT</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bootstrap</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<releases>
<enabled>false</enabled>
</releases>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<releases>
<enabled>false</enabled>
</releases>
</pluginRepository>
</pluginRepositories>
</project>
Errors:
Even the client is not started at all
http://localhost:8080/
Error on console:
APPLICATION FAILED TO START
Description:
No spring.config.import property has been defined
Action:
Add a spring.config.import=configserver: property to your configuration.
If configuration is not required add spring.config.import=optional:configserver: instead.
To disable this check, set spring.cloud.config.enabled=false or
spring.cloud.config.import-check.enabled=false.

To use the legacy bootstrap way of connecting to Config Server,bootstrap must be enabled via a property or the spring-cloud-starter-bootstrap starter.The property is spring.cloud.bootstrap.enabled=true. It must be set as a System Property or environment variable. spring docs

After expending too much time I found two approach to fix this issues -
Basically we have to make the value of spring.cloud.bootstrap.enabled as true by default it is false. This was already mentioned in Spring Cloud doc but I didn't get this point at very first time. After finding the solution of this issue, the point of spring cloud doc has cleared.
First Approach: set the System environment variable in #SpringBootApplicationclass
public static void main(String[] args) throws IOException {
System.setProperty("spring.cloud.bootstrap.enabled","true");
run(Application.class, args);
}
Second Approach: An entry of dependency into pom.xml, it make spring.cloud.bootstrap.enabled
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bootstrap</artifactId>
</dependency>

Create a REST API with Spring Boot [duplicate]

This question already has answers here:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured
(43 answers)
Closed 2 years ago.
I have created a a restaurant reservation application in Spring but when I run as Java Application its says:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
Reason: Failed to determine a suitable driver class
The pom.xml file being used:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.0-SNAPSHOT</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.codebydarko</groupId>
<artifactId>reservation-microservice</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>reservation-microservice</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>14</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<executable>true</executable>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</repository>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</pluginRepository>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</project>
The Spring Boot application:
package com.codebydarko;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class ReservationMicroserviceApplication {
public static void main(String[] args) {
SpringApplication.run(ReservationMicroserviceApplication.class, args);
}
}

When you add this dependency spring-boot-starter-data-jpa in your maven file spring searches for spring.datasource.url config in application.properties file.
You need to define it in application.properties

When i am trying to use #ResController in my maven project it showing error " RestController can not be resolved to a type".Help me to resolve this

pom.xml
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.3.2.BUILD-SNAPSHOT
com.java
restful-web-service
0.0.1-SNAPSHOT
restful-web-service
Demo project for Spring Boot
<properties>
<java.version>14</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</repository>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</pluginRepository>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
Here my simple code to create Rest api
package com.java.restfulwebservice;
#RestController
public class HelloworldController {
...
}

Please import the RestController like below :
import org.springframework.web.bind.annotation.RestController;

Missing parameters in custom Task for Spring Cloud Data Flow

I'm developing a task to use Spring Cloud Data Flow, but I can't see the execution parameters of my task (which is a Spring Boot application) or how to execute the task.
I am importing my application as a base and as the project as a base: spring-cloud-starter-task-timestamp
This is my pom, I made this using Spring Initializr and then using the timestamp-task application for tweaking.
<groupId>teste</groupId>
<artifactId>scdf-neo4j-task</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>scdf-neo4j-task</name>
<description>scdf-neo4j-task</description>
<parent>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-task-parent</artifactId>
<version>2.3.0-SNAPSHOT</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<spring-cloud.version>Hoxton.SR5</spring-cloud.version>
<start-class>teste.scdf.Neo4jTaskApplication</start-class>
<skipInstall>true</skipInstall>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-task</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.neo4j.driver</groupId>
<artifactId>neo4j-java-driver</artifactId>
<version>4.0.1</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-task-dependencies</artifactId>
<version>2.3.0-SNAPSHOT</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/libs-snapshot-local</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/libs-milestone-local</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<id>spring-releases</id>
<name>Spring Releases</name>
<url>https://repo.spring.io/release</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<id>spring-libs-release</id>
<name>Spring Libs Release</name>
<url>https://repo.spring.io/libs-release</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<snapshots>
<enabled>false</enabled>
</snapshots>
<id>spring-milestone-release</id>
<name>Spring Milestone Release</name>
<url>https://repo.spring.io/libs-milestone</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-releases></id>
<name>Spring Releases</name>
<url>https://repo.spring.io/libs-release</url>
</pluginRepository>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/libs-snapshot-local</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/libs-milestone-local</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</project>
This is my main Spring Boot class that implements CommandLineRunner:
#Log
#EnableTask
#SpringBootApplication
#EnableConfigurationProperties({Neo4jTaskProperties.class})
public class Neo4jTaskApplication
{
#Autowired
public Neo4jTaskProperties neo4jTaskProperties;
public static void main(String[] args)
{
SpringApplication.run(Neo4jTaskApplication.class, args);
}
#Bean
public CommandLineRunner commandLineRunner()
{
return args ->
{
Driver driver = GraphDatabase.driver(
neo4jTaskProperties.getUri(),
AuthTokens.basic(
neo4jTaskProperties.getUsername(),
neo4jTaskProperties.getPassword()
)
);
try (Session session = driver.session())
{
session.writeTransaction(transactionWork ->
{
ResultSummary resultSummary = transactionWork.run(neo4jTaskProperties.getCommand()).consume();
return resultSummary;
});
}
};
}
}
And this is my properties class:
#Data
#ConfigurationProperties("neo4j")
public class Neo4jTaskProperties {
private String uri;
private String username;
private String password;
private String command;
}
How can I solve this problem?

You need to add your task application properties into an application metadata that Spring Cloud Data Flow knows how to extract and make them available.
You can refer this page that walks you through how to add metadata.
Also, you can check this sample configuration as a reference on how to add such metadata.

Develop Reference

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

resilence4j+springboot2 circuit breaker is not opened - java

Related

Spring gateway server won't start - java.lang.NoClassDefFoundError: org/springframework/core/metrics/ApplicationStartup

spring boot config client could not load configuration from config server using bootstrap.properties

Create a REST API with Spring Boot [duplicate]

When i am trying to use #ResController in my maven project it showing error " RestController can not be resolved to a type".Help me to resolve this

Missing parameters in custom Task for Spring Cloud Data Flow

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