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Added info on Apache Kafka

Data-streaming/apache-kafka.md

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+## Apache Kafka
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+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.
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+Core Capabilities:
+- Deliver messages at network limited throughput using a cluster of machines with latencies as low as 2ms.
+- Scale production clusters up to a thousand brokers, trillions of messages per day, petabytes of data, hundreds of thousands of partitions. Elastically expand and contract storage and processing.
+- Store streams of data safely in a distributed, durable, fault-tolerant cluster.
+- Stretch clusters efficiently over availability zones or connect separate clusters across geographic regions.
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+Ecosystem: 
+- Process streams of events with joins, aggregations, filters, transformations, and more, using event-time and exactly-once processing.
+- Kafka’s out-of-the-box Connect interface integrates with hundreds of event sources and event sinks including Postgres, JMS, Elasticsearch, AWS S3, and more.
+- Read, write, and process streams of events in a vast array of programming languages.
+- Large ecosystem of open source tools: Leverage a vast array of community-driven tooling.
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+For more info: [https://kafka.apache.org/] (https://kafka.apache.org/)