boot-mongodb-elasticsearch

boot-mongodb-elasticsearch

Run tests

./mvnw clean verify

Run locally

docker-compose -f docker/docker-compose.yml up -d
./mvnw spring-boot:run -Dspring-boot.run.profiles=local

Useful Links

• Swagger UI: http://localhost:8080/swagger-ui.html
• Actuator Endpoint: http://localhost:8080/actuator
• Prometheus: http://localhost:9090/
• Grafana: http://localhost:3000/ (admin/admin)
• Kibana: http://localhost:5601/app/kibana#/dev_tools/console?_g=()
• Elasticsearch : http://localhost:9200/
• MongoExpress : http://localhost:8081

Mongodb Notes

Transactions with ReactiveMongoTransactionManager

@Configuration
public class DataStoreConfiguration extends AbstractReactiveMongoConfiguration {

    @Value("${spring.data.mongodb.database}")
    private String databaseName;

    @Bean
    ReactiveMongoTransactionManager transactionManager(ReactiveMongoDatabaseFactory factory) {
        return new ReactiveMongoTransactionManager(factory);
    }

    @Override
    protected String getDatabaseName() {
        return this.databaseName;
    }
}

Elastic Search Notes

UseFull ElasticSearch Commands

• Count http://localhost:9200/restaurant/_count
• Search http://localhost:9200/restaurant/_search
• Mapping http://localhost:9200/restaurant/_mapping

Reference

• https://medium.com/geekculture/elastic-search-queries-hands-on-examples-fe5b2bc10c0e

Exceptions & Resolutions

• When using reactive elasticeSearch is we get below issue like raiseLimitException then solution should be to raise the memory using property

2022-10-01 21:24:14.156 ERROR 34465 --- [or-http-epoll-2] a.w.r.e.AbstractErrorWebExceptionHandler : [8006d397-1]  500 Server Error for HTTP GET "/restaurant?limit=1000&offset=1"

org.springframework.core.io.buffer.DataBufferLimitException: Exceeded limit on max bytes to buffer : 262144
        at org.springframework.core.io.buffer.LimitedDataBufferList.raiseLimitException(LimitedDataBufferList.java:99)

To fix this set spring.elasticsearch.webclient.max-in-memory-size=-1 for unlimited memory