Spring Data Neo4j: Unable to acquire connection from the pool within configured maximum time

Question

I am doing stress testing of my Neo4j client which is built using spring-boot-starter-data-neo4j.

After sometime passed, application throwing error Unable to acquire connection for any request.

This is my bean configuration for Neo4j connection. can someone check and tell what can be done

id("org.springframework.boot") version "2.4.0"



@Configuration
    @EnableTransactionManagement
    class Neo4jConfig(
        @Value("${spring.neo4j.uri}")
        val neo4jDBUri: String,

        @Value("${spring.neo4j.authentication.username}")
        val neo4jDbUserName: String,

        @Value("${spring.neo4j.authentication.password}")
        val neo4jDbUserPassword: String
    ) : AbstractNeo4jConfig() {
//        https://medium.com/neo4j/try-and-then-retry-there-can-be-failure-30bf336383da
        @Bean
        override fun driver(): Driver {
            val config: Config = Config.builder()
                .withMaxTransactionRetryTime(60, TimeUnit.SECONDS)
                .withLeakedSessionsLogging()
                .withRoutingTablePurgeDelay(1, TimeUnit.SECONDS)
                .withConnectionAcquisitionTimeout(2 * 60, TimeUnit.SECONDS)
                .withConnectionLivenessCheckTimeout(2 * 60, TimeUnit.SECONDS)
                .withDriverMetrics()
                .withMaxConnectionPoolSize(100)
                .build()

            return GraphDatabase
                .driver(neo4jDBUri, AuthTokens.basic(neo4jDbUserName, neo4jDbUserPassword), config)
        }
    }

    // Refer: https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.4.0-M2-Release-Notes#neo4j-1
    @Bean(ReactiveNeo4jRepositoryConfigurationExtension.DEFAULT_TRANSACTION_MANAGER_BEAN_NAME)
    fun reactiveTransactionManager(
        driver: Driver,
        databaseNameProvider: ReactiveDatabaseSelectionProvider
    ): ReactiveTransactionManager = ReactiveNeo4jTransactionManager(driver, databaseNameProvider)

    // Refer: https://hantsy.medium.com/data-auditing-with-spring-data-neo4j-11d6461146ff
    @Configuration(proxyBeanMethods = false)
    @EnableReactiveNeo4jAuditing
    internal class DataConfig {
        @Bean
        fun reactiveAuditorAware(): ReactiveAuditorAware<String> = ReactiveAuditorAware { Mono.just("Audit enabled") }
    }

Error message

webFilters.ControllerConfig in Neo4jDriverIO-2-2 - Returning HTTP 400 Bad Requestorg.springframework.dao.InvalidDataAccessResourceUsageException: Unable to acquire connection from the pool within configured maximum time of 120000ms; Error code 'N/A'   at org.springframework.data.neo4j.repository.support.Neo4jPersistenceExceptionTranslator.translateImpl(Neo4jPersistenceExceptionTranslator.java:105)    Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: Error has been observed at the following site(s):    |_ checkpoint ? Handler 

controller.UserApiController#createUser(UserReqModel, Continuation) [DispatcherHandler]Stack trace:     at org.springframework.data.neo4j.repository.support.Neo4jPersistenceExceptionTranslator.translateImpl(Neo4jPersistenceExceptionTranslator.java:105)        at org.springframework.data.neo4j.repository.support.Neo4jPersistenceExceptionTranslator.translateExceptionIfPossible(Neo4jPersistenceExceptionTranslator.java:91)      at org.springframework.data.neo4j.core.DefaultReactiveNeo4jClient.potentiallyConvertRuntimeException(DefaultReactiveNeo4jClient.java:271)       at org.springframework.data.neo4j.core.DefaultReactiveNeo4jClient.access$200(DefaultReactiveNeo4jClient.java:54)        at org.springframework.data.neo4j.core.DefaultReactiveNeo4jClient$DefaultRecordFetchSpec.la

Answer 1

等待大神答复