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This spike is a WIP

 /**
     * Consume the specified event.
     *
     * @param cpsDataUpdatedEvent the data updated event to be consumed and persisted.
     */
    @KafkaListener(topics = "${app.listener.data-updated.topic}", errorHandler = "dataUpdatedEventListenerErrorHandler")
    public void consume(final CpsDataUpdatedEvent cpsDataUpdatedEvent) {

        log.debug("Receiving {} ...", cpsDataUpdatedEvent);

        // Validate event envelop
        validateEventEnvelop(cpsDataUpdatedEvent);

        // Map event to entity
        final var networkData = this.cpsDataUpdatedEventMapper.eventToEntity(cpsDataUpdatedEvent);
        log.debug("Persisting {} ...", networkData);

        // Persist entity
        final var persistedNetworkData = this.networkDataService.addNetworkData(networkData);
        log.debug("Persisted {}", persistedNetworkData);

    }

# ============LICENSE_START=======================================================
# Copyright (c) 2021 Bell Canada.
# ================================================================================
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ============LICENSE_END=========================================================

# Spring profile configuration for sasl ssl Kafka

spring:
    kafka:
        bootstrap-servers: ${KAFKA_BOOTSTRAP_SERVER}
        security:
            protocol: SASL_SSL
        ssl:
            trust-store-type: JKS
            trust-store-location: ${KAFKA_SSL_TRUST_STORE_LOCATION}
            trust-store-password: ${KAFKA_SSL_TRUST_STORE_PASSWORD}
        properties:
            sasl.mechanism: SCRAM-SHA-512
            sasl.jaas.config: ${KAFKA_SASL_JAAS_CONFIG}
            ssl.endpoint.identification.algorithm:

  kafka:
    image: confluentinc/cp-kafka:6.1.1
    container_name: kafka
    ports:
      - "19092:19092"
    depends_on:
      - zookeeper
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092,CONNECTIONS_FROM_HOST://localhost:19092
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,CONNECTIONS_FROM_HOST:PLAINTEXT
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1

public Future<String> calculateAsync() throws InterruptedException {
    CompletableFuture<String> completableFuture = new CompletableFuture<>();

    Executors.newCachedThreadPool().submit(() -> {
        Thread.sleep(500);
        completableFuture.complete("Hello");
        return null;
    });

    return completableFuture;
}

int number = 20;
Thread newThread = new Thread(() -> {
    System.out.println("Factorial of " + number + " is: " + factorial(number));
});
newThread.start();