Thanks to cheat sheets of ByteBytGo.They are helpful!
Apache Kafka：https://kafka.apache.org/
As Apache Kafka defines,
Apache Kafka is an open-source distributed event streaming platform used by thousands of companies for high-performance data pipelines, streaming analytics, data integration, and mission-critical applications.
There are something more about the keywords "event streaming platform" and "high-performance data pipelines"
-distributed event streaming platform
Event streaming is the digital equivalent of the human body's central nervous system. It is the technological foundation for the 'always-on' world where businesses are increasingly software-defined and automated, and where the user of software is more software.
-high-performance data pipelines
First of ALL. Think about why Kafka could be so fast.
And When we need it.
And of course, try to use it!