1. Akka v. 2.5.32. https://akka.io/. Accessed 15 September 2020.
2. Apache Flink v. 1.12. https://flink.apache.org/. Accessed 15 September 2020.
3. Apache Kafka v. 2.3. https://kafka.apache.org/. Accessed 15 September 2020.
4. Apache Samza v. 1.5.1. http://samza.apache.org/. Accessed 15 September 2020.
5. Apache Spark v. 2.4.4. https://spark.apache.org/. Accessed 15 September 2020.